./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:35,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:35,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:06:35,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:35,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:35,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:35,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:35,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:35,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:35,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:35,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:35,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:35,596 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:35,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:35,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:35,599 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:35,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:35,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:35,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:35,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:35,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:35,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:35,602 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:06:35,603 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:06:35,603 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:35,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:35,604 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:35,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:35,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:35,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:35,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:35,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:35,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:35,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:35,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:35,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:35,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:35,609 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:35,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:35,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:35,610 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:35,610 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_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 [2023-11-12 02:06:35,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:35,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:35,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:35,929 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:35,929 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:35,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2023-11-12 02:06:38,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:39,307 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:39,307 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2023-11-12 02:06:39,323 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/data/be1afec8d/070ff837fc644632b9e2f85bf0844264/FLAG96397458a [2023-11-12 02:06:39,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/data/be1afec8d/070ff837fc644632b9e2f85bf0844264 [2023-11-12 02:06:39,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:39,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:39,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:39,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:39,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:39,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cba180f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39, skipping insertion in model container [2023-11-12 02:06:39,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,393 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:39,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:39,741 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:39,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:39,826 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:39,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39 WrapperNode [2023-11-12 02:06:39,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:39,828 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:39,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:39,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:39,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,877 INFO L138 Inliner]: procedures = 171, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 89 [2023-11-12 02:06:39,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:39,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:39,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:39,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:39,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,941 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:39,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:39,948 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:39,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:39,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:39,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:39,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:40,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aa0e85-a4e6-48ab-ba7d-e3241fa576a2/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:40,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:06:40,029 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-12 02:06:40,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-12 02:06:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:06:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:06:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:06:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:40,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:40,033 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:06:40,176 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:40,178 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:40,387 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:40,436 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:40,440 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:06:40,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:40 BoogieIcfgContainer [2023-11-12 02:06:40,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:40,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:40,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:40,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:40,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:39" (1/3) ... [2023-11-12 02:06:40,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1118395b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:40, skipping insertion in model container [2023-11-12 02:06:40,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (2/3) ... [2023-11-12 02:06:40,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1118395b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:40, skipping insertion in model container [2023-11-12 02:06:40,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:40" (3/3) ... [2023-11-12 02:06:40,458 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2023-11-12 02:06:40,468 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:06:40,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:40,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-12 02:06:40,478 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:06:40,568 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:06:40,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 94 transitions, 192 flow [2023-11-12 02:06:40,710 INFO L124 PetriNetUnfolderBase]: 10/105 cut-off events. [2023-11-12 02:06:40,713 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:06:40,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 10/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-11-12 02:06:40,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 94 transitions, 192 flow [2023-11-12 02:06:40,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 94 transitions, 192 flow [2023-11-12 02:06:40,732 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:06:40,753 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 94 transitions, 192 flow [2023-11-12 02:06:40,763 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 94 transitions, 192 flow [2023-11-12 02:06:40,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 94 transitions, 192 flow [2023-11-12 02:06:40,815 INFO L124 PetriNetUnfolderBase]: 10/105 cut-off events. [2023-11-12 02:06:40,815 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:06:40,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 10/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-11-12 02:06:40,818 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2023-11-12 02:06:44,745 INFO L134 LiptonReduction]: Checked pairs total: 1421 [2023-11-12 02:06:44,745 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-11-12 02:06:44,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:06:44,769 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dc63e72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:06:44,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-12 02:06:44,773 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:06:44,774 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-11-12 02:06:44,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:06:44,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:44,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:06:44,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:06:44,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:44,781 INFO L85 PathProgramCache]: Analyzing trace with hash 446249637, now seen corresponding path program 1 times [2023-11-12 02:06:44,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:44,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074286777] [2023-11-12 02:06:44,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:44,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:45,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074286777] [2023-11-12 02:06:45,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074286777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:45,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:45,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:45,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982225969] [2023-11-12 02:06:45,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:45,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:45,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:45,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-11-12 02:06:45,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:45,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-11-12 02:06:45,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:45,363 INFO L124 PetriNetUnfolderBase]: 11/29 cut-off events. [2023-11-12 02:06:45,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:06:45,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 29 events. 11/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 57 event pairs, 2 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 50. Up to 18 conditions per place. [2023-11-12 02:06:45,366 INFO L140 encePairwiseOnDemand]: 198/203 looper letters, 9 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2023-11-12 02:06:45,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 12 transitions, 50 flow [2023-11-12 02:06:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2023-11-12 02:06:45,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2023-11-12 02:06:45,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2023-11-12 02:06:45,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2023-11-12 02:06:45,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:45,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2023-11-12 02:06:45,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,413 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 30 flow. Second operand 3 states and 252 transitions. [2023-11-12 02:06:45,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 12 transitions, 50 flow [2023-11-12 02:06:45,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:06:45,417 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 28 flow [2023-11-12 02:06:45,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2023-11-12 02:06:45,423 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2023-11-12 02:06:45,423 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 28 flow [2023-11-12 02:06:45,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:45,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:06:45,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:06:45,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:06:45,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:45,426 INFO L85 PathProgramCache]: Analyzing trace with hash 446249714, now seen corresponding path program 1 times [2023-11-12 02:06:45,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:45,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414102448] [2023-11-12 02:06:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:45,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:45,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:45,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414102448] [2023-11-12 02:06:45,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414102448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:45,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:45,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657875428] [2023-11-12 02:06:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:45,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:45,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:45,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:45,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:45,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-11-12 02:06:45,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:45,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-11-12 02:06:45,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:45,653 INFO L124 PetriNetUnfolderBase]: 9/25 cut-off events. [2023-11-12 02:06:45,653 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:06:45,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 25 events. 9/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 47 event pairs, 2 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 46. Up to 13 conditions per place. [2023-11-12 02:06:45,654 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 8 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2023-11-12 02:06:45,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 11 transitions, 50 flow [2023-11-12 02:06:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-11-12 02:06:45,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072249589490969 [2023-11-12 02:06:45,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-11-12 02:06:45,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-11-12 02:06:45,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:45,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-11-12 02:06:45,665 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) [2023-11-12 02:06:45,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,669 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 28 flow. Second operand 3 states and 248 transitions. [2023-11-12 02:06:45,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 11 transitions, 50 flow [2023-11-12 02:06:45,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:45,672 INFO L231 Difference]: Finished difference. Result has 13 places, 9 transitions, 26 flow [2023-11-12 02:06:45,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, 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} [2023-11-12 02:06:45,676 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -2 predicate places. [2023-11-12 02:06:45,676 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 26 flow [2023-11-12 02:06:45,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:45,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:06:45,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:06:45,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:06:45,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:45,687 INFO L85 PathProgramCache]: Analyzing trace with hash 446249780, now seen corresponding path program 1 times [2023-11-12 02:06:45,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:45,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537172724] [2023-11-12 02:06:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:45,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537172724] [2023-11-12 02:06:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537172724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:45,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:45,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334963264] [2023-11-12 02:06:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:45,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:45,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:45,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:45,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:45,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-11-12 02:06:45,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:45,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-11-12 02:06:45,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:45,833 INFO L124 PetriNetUnfolderBase]: 7/19 cut-off events. [2023-11-12 02:06:45,834 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:06:45,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 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, 2 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 36. Up to 11 conditions per place. [2023-11-12 02:06:45,835 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 7 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-11-12 02:06:45,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 10 transitions, 46 flow [2023-11-12 02:06:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-11-12 02:06:45,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40558292282430214 [2023-11-12 02:06:45,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-11-12 02:06:45,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-11-12 02:06:45,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:45,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-11-12 02:06:45,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,842 INFO L175 Difference]: Start difference. First operand has 13 places, 9 transitions, 26 flow. Second operand 3 states and 247 transitions. [2023-11-12 02:06:45,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 10 transitions, 46 flow [2023-11-12 02:06:45,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 10 transitions, 42 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:45,844 INFO L231 Difference]: Finished difference. Result has 12 places, 8 transitions, 24 flow [2023-11-12 02:06:45,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=24, PETRI_PLACES=12, PETRI_TRANSITIONS=8} [2023-11-12 02:06:45,845 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -3 predicate places. [2023-11-12 02:06:45,845 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 24 flow [2023-11-12 02:06:45,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:45,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:06:45,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:06:45,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:06:45,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 948763446, now seen corresponding path program 1 times [2023-11-12 02:06:45,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:45,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665766130] [2023-11-12 02:06:45,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:45,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:06:45,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:06:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:06:45,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:06:45,890 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:06:45,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-12 02:06:45,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-11-12 02:06:45,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-11-12 02:06:45,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-11-12 02:06:45,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-11-12 02:06:45,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-11-12 02:06:45,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-11-12 02:06:45,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-11-12 02:06:45,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-11-12 02:06:45,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:06:45,896 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-12 02:06:45,899 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:06:45,899 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:06:45,964 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:06:45,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 155 transitions, 320 flow [2023-11-12 02:06:46,013 INFO L124 PetriNetUnfolderBase]: 19/179 cut-off events. [2023-11-12 02:06:46,013 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:06:46,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 179 events. 19/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 383 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 133. Up to 6 conditions per place. [2023-11-12 02:06:46,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 155 transitions, 320 flow [2023-11-12 02:06:46,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 155 transitions, 320 flow [2023-11-12 02:06:46,021 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:06:46,021 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 155 transitions, 320 flow [2023-11-12 02:06:46,021 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 155 transitions, 320 flow [2023-11-12 02:06:46,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 155 transitions, 320 flow [2023-11-12 02:06:46,057 INFO L124 PetriNetUnfolderBase]: 19/179 cut-off events. [2023-11-12 02:06:46,058 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:06:46,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 179 events. 19/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 383 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 133. Up to 6 conditions per place. [2023-11-12 02:06:46,071 INFO L119 LiptonReduction]: Number of co-enabled transitions 10680 [2023-11-12 02:06:50,791 INFO L134 LiptonReduction]: Checked pairs total: 13746 [2023-11-12 02:06:50,791 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-11-12 02:06:50,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:06:50,795 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dc63e72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:06:50,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:06:50,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:06:50,799 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-12 02:06:50,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:06:50,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:50,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:06:50,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:06:50,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:50,801 INFO L85 PathProgramCache]: Analyzing trace with hash 819348012, now seen corresponding path program 1 times [2023-11-12 02:06:50,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:50,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135167657] [2023-11-12 02:06:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:50,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:50,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:50,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135167657] [2023-11-12 02:06:50,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135167657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:50,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:50,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:50,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963819978] [2023-11-12 02:06:50,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:50,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:50,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:50,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-12 02:06:50,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:50,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:50,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-12 02:06:50,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:51,030 INFO L124 PetriNetUnfolderBase]: 182/348 cut-off events. [2023-11-12 02:06:51,030 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-12 02:06:51,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 348 events. 182/348 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1740 event pairs, 27 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 500. Up to 211 conditions per place. [2023-11-12 02:06:51,037 INFO L140 encePairwiseOnDemand]: 318/326 looper letters, 25 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-12 02:06:51,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 143 flow [2023-11-12 02:06:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-11-12 02:06:51,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44171779141104295 [2023-11-12 02:06:51,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-11-12 02:06:51,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-11-12 02:06:51,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:51,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-11-12 02:06:51,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,047 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 78 flow. Second operand 3 states and 432 transitions. [2023-11-12 02:06:51,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 143 flow [2023-11-12 02:06:51,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 143 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:06:51,049 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 70 flow [2023-11-12 02:06:51,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2023-11-12 02:06:51,050 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-11-12 02:06:51,050 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 70 flow [2023-11-12 02:06:51,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:51,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:06:51,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:06:51,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:06:51,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:51,052 INFO L85 PathProgramCache]: Analyzing trace with hash 819348056, now seen corresponding path program 1 times [2023-11-12 02:06:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:51,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649023068] [2023-11-12 02:06:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:51,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:51,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649023068] [2023-11-12 02:06:51,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649023068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:51,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:51,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:51,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91993456] [2023-11-12 02:06:51,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:51,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:51,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:51,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:51,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:51,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-12 02:06:51,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:51,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-12 02:06:51,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:51,236 INFO L124 PetriNetUnfolderBase]: 155/297 cut-off events. [2023-11-12 02:06:51,236 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-12 02:06:51,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 297 events. 155/297 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1390 event pairs, 35 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 454. Up to 172 conditions per place. [2023-11-12 02:06:51,240 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 24 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-12 02:06:51,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 143 flow [2023-11-12 02:06:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-11-12 02:06:51,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325153374233129 [2023-11-12 02:06:51,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-11-12 02:06:51,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-11-12 02:06:51,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:51,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-11-12 02:06:51,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,249 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 70 flow. Second operand 3 states and 423 transitions. [2023-11-12 02:06:51,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 143 flow [2023-11-12 02:06:51,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 139 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:51,252 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 68 flow [2023-11-12 02:06:51,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-11-12 02:06:51,253 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2023-11-12 02:06:51,254 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 68 flow [2023-11-12 02:06:51,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:51,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:06:51,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:06:51,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:06:51,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash 819348216, now seen corresponding path program 1 times [2023-11-12 02:06:51,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:51,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410246975] [2023-11-12 02:06:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:51,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:51,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410246975] [2023-11-12 02:06:51,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410246975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:51,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:51,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:51,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093155023] [2023-11-12 02:06:51,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:51,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:51,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:51,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:51,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:51,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 326 [2023-11-12 02:06:51,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:51,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 326 [2023-11-12 02:06:51,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:51,504 INFO L124 PetriNetUnfolderBase]: 174/339 cut-off events. [2023-11-12 02:06:51,504 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-12 02:06:51,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 339 events. 174/339 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1610 event pairs, 111 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 362. Up to 238 conditions per place. [2023-11-12 02:06:51,508 INFO L140 encePairwiseOnDemand]: 322/326 looper letters, 25 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-12 02:06:51,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 147 flow [2023-11-12 02:06:51,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2023-11-12 02:06:51,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284253578732106 [2023-11-12 02:06:51,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2023-11-12 02:06:51,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2023-11-12 02:06:51,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:51,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2023-11-12 02:06:51,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,518 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 68 flow. Second operand 3 states and 419 transitions. [2023-11-12 02:06:51,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 147 flow [2023-11-12 02:06:51,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:51,520 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 78 flow [2023-11-12 02:06:51,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2023-11-12 02:06:51,521 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-11-12 02:06:51,521 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 78 flow [2023-11-12 02:06:51,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:51,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:06:51,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:06:51,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:06:51,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:51,523 INFO L85 PathProgramCache]: Analyzing trace with hash -370008286, now seen corresponding path program 1 times [2023-11-12 02:06:51,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:51,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102503372] [2023-11-12 02:06:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:51,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:51,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102503372] [2023-11-12 02:06:51,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102503372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:51,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:51,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:51,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098034236] [2023-11-12 02:06:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:51,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:51,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:51,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:51,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-12 02:06:51,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 78 flow. Second operand has 3 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) [2023-11-12 02:06:51,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:51,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-12 02:06:51,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:51,649 INFO L124 PetriNetUnfolderBase]: 155/297 cut-off events. [2023-11-12 02:06:51,649 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-12 02:06:51,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 297 events. 155/297 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1345 event pairs, 35 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 496. Up to 172 conditions per place. [2023-11-12 02:06:51,652 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 24 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-12 02:06:51,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 149 flow [2023-11-12 02:06:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:51,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:51,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-11-12 02:06:51,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43149284253578735 [2023-11-12 02:06:51,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-11-12 02:06:51,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-11-12 02:06:51,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:51,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-11-12 02:06:51,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,661 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 78 flow. Second operand 3 states and 422 transitions. [2023-11-12 02:06:51,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 149 flow [2023-11-12 02:06:51,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 145 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:06:51,663 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 74 flow [2023-11-12 02:06:51,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-11-12 02:06:51,664 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-11-12 02:06:51,665 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 74 flow [2023-11-12 02:06:51,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-12 02:06:51,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:51,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:51,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:06:51,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:06:51,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:51,666 INFO L85 PathProgramCache]: Analyzing trace with hash 662700844, now seen corresponding path program 1 times [2023-11-12 02:06:51,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:51,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045831656] [2023-11-12 02:06:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:06:51,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:51,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045831656] [2023-11-12 02:06:51,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045831656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:51,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:51,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:51,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794241814] [2023-11-12 02:06:51,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:51,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:51,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:51,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-12 02:06:51,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 74 flow. Second operand has 3 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) [2023-11-12 02:06:51,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:51,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-12 02:06:51,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:51,796 INFO L124 PetriNetUnfolderBase]: 153/296 cut-off events. [2023-11-12 02:06:51,797 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-12 02:06:51,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 296 events. 153/296 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1305 event pairs, 31 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 377. Up to 162 conditions per place. [2023-11-12 02:06:51,800 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-12 02:06:51,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 144 flow [2023-11-12 02:06:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2023-11-12 02:06:51,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284253578732106 [2023-11-12 02:06:51,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2023-11-12 02:06:51,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2023-11-12 02:06:51,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:51,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2023-11-12 02:06:51,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,808 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 74 flow. Second operand 3 states and 419 transitions. [2023-11-12 02:06:51,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 144 flow [2023-11-12 02:06:51,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:51,810 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 72 flow [2023-11-12 02:06:51,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2023-11-12 02:06:51,811 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2023-11-12 02:06:51,811 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 72 flow [2023-11-12 02:06:51,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-12 02:06:51,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:51,812 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:51,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:06:51,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:06:51,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:51,813 INFO L85 PathProgramCache]: Analyzing trace with hash 662701090, now seen corresponding path program 1 times [2023-11-12 02:06:51,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:51,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492923080] [2023-11-12 02:06:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:06:51,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:51,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492923080] [2023-11-12 02:06:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492923080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:51,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:51,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:51,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374979559] [2023-11-12 02:06:51,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:51,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:51,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:51,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:51,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-12 02:06:51,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 72 flow. Second operand has 3 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) [2023-11-12 02:06:51,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:51,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-12 02:06:51,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:51,947 INFO L124 PetriNetUnfolderBase]: 135/266 cut-off events. [2023-11-12 02:06:51,947 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-12 02:06:51,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 266 events. 135/266 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1114 event pairs, 31 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 214. Up to 132 conditions per place. [2023-11-12 02:06:51,950 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-12 02:06:51,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 136 flow [2023-11-12 02:06:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-11-12 02:06:51,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274028629856851 [2023-11-12 02:06:51,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-11-12 02:06:51,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-11-12 02:06:51,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:51,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-11-12 02:06:51,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:51,958 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 72 flow. Second operand 3 states and 418 transitions. [2023-11-12 02:06:51,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 136 flow [2023-11-12 02:06:51,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:51,960 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 70 flow [2023-11-12 02:06:51,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-11-12 02:06:51,961 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-11-12 02:06:51,961 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 70 flow [2023-11-12 02:06:51,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-12 02:06:51,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:51,962 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:51,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:06:51,962 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:06:51,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:51,963 INFO L85 PathProgramCache]: Analyzing trace with hash 662701003, now seen corresponding path program 1 times [2023-11-12 02:06:51,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:51,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820496219] [2023-11-12 02:06:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:06:52,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:52,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820496219] [2023-11-12 02:06:52,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820496219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:52,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:52,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:52,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204006845] [2023-11-12 02:06:52,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:52,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:52,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:52,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:52,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:52,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-12 02:06:52,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 70 flow. Second operand has 3 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) [2023-11-12 02:06:52,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:52,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-12 02:06:52,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:52,151 INFO L124 PetriNetUnfolderBase]: 117/236 cut-off events. [2023-11-12 02:06:52,152 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-12 02:06:52,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 236 events. 117/236 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 952 event pairs, 31 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 188. Up to 102 conditions per place. [2023-11-12 02:06:52,154 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-12 02:06:52,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 132 flow [2023-11-12 02:06:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-11-12 02:06:52,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263803680981595 [2023-11-12 02:06:52,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-11-12 02:06:52,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-11-12 02:06:52,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:52,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-11-12 02:06:52,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:52,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:52,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:52,165 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 70 flow. Second operand 3 states and 417 transitions. [2023-11-12 02:06:52,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 132 flow [2023-11-12 02:06:52,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:52,170 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 68 flow [2023-11-12 02:06:52,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-11-12 02:06:52,171 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-11-12 02:06:52,172 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 68 flow [2023-11-12 02:06:52,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-12 02:06:52,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:52,173 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:06:52,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:06:52,174 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:06:52,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:52,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1189905370, now seen corresponding path program 1 times [2023-11-12 02:06:52,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:52,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079850160] [2023-11-12 02:06:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:52,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:06:52,192 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:06:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:06:52,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:06:52,210 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:06:52,211 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-12 02:06:52,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-12 02:06:52,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-12 02:06:52,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-12 02:06:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-12 02:06:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-12 02:06:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-12 02:06:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-12 02:06:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-12 02:06:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-12 02:06:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-12 02:06:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-12 02:06:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-12 02:06:52,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:06:52,214 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:52,215 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:06:52,216 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:06:52,263 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:06:52,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 216 transitions, 450 flow [2023-11-12 02:06:52,321 INFO L124 PetriNetUnfolderBase]: 28/253 cut-off events. [2023-11-12 02:06:52,321 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:06:52,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 28/253 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 724 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2023-11-12 02:06:52,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 216 transitions, 450 flow [2023-11-12 02:06:52,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 216 transitions, 450 flow [2023-11-12 02:06:52,327 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:06:52,328 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 216 transitions, 450 flow [2023-11-12 02:06:52,328 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 216 transitions, 450 flow [2023-11-12 02:06:52,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 216 transitions, 450 flow [2023-11-12 02:06:52,376 INFO L124 PetriNetUnfolderBase]: 28/253 cut-off events. [2023-11-12 02:06:52,376 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:06:52,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 28/253 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 724 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2023-11-12 02:06:52,397 INFO L119 LiptonReduction]: Number of co-enabled transitions 27000 [2023-11-12 02:06:58,481 INFO L134 LiptonReduction]: Checked pairs total: 37430 [2023-11-12 02:06:58,481 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-11-12 02:06:58,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:06:58,483 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dc63e72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:06:58,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-12 02:06:58,485 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:06:58,485 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-12 02:06:58,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:06:58,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:58,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:06:58,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:06:58,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1319002059, now seen corresponding path program 1 times [2023-11-12 02:06:58,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:58,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761187209] [2023-11-12 02:06:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:58,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:58,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:58,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761187209] [2023-11-12 02:06:58,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761187209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:58,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:58,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619993925] [2023-11-12 02:06:58,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:58,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:58,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:58,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:58,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-12 02:06:58,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:58,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:58,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-12 02:06:58,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:59,038 INFO L124 PetriNetUnfolderBase]: 2072/3234 cut-off events. [2023-11-12 02:06:59,038 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-11-12 02:06:59,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6184 conditions, 3234 events. 2072/3234 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 19902 event pairs, 377 based on Foata normal form. 0/2068 useless extension candidates. Maximal degree in co-relation 1173. Up to 2059 conditions per place. [2023-11-12 02:06:59,076 INFO L140 encePairwiseOnDemand]: 452/462 looper letters, 41 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-12 02:06:59,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 230 flow [2023-11-12 02:06:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-11-12 02:06:59,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44083694083694086 [2023-11-12 02:06:59,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-11-12 02:06:59,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-11-12 02:06:59,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:59,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-11-12 02:06:59,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,090 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 114 flow. Second operand 3 states and 611 transitions. [2023-11-12 02:06:59,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 230 flow [2023-11-12 02:06:59,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 226 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-12 02:06:59,093 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 100 flow [2023-11-12 02:06:59,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-12 02:06:59,095 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-12 02:06:59,095 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 100 flow [2023-11-12 02:06:59,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:59,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:06:59,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:06:59,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:06:59,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1319002238, now seen corresponding path program 1 times [2023-11-12 02:06:59,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:59,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321244827] [2023-11-12 02:06:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:59,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:59,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:59,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321244827] [2023-11-12 02:06:59,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321244827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:59,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:59,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:59,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383780563] [2023-11-12 02:06:59,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:59,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:59,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:59,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:59,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-12 02:06:59,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:59,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-12 02:06:59,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:59,594 INFO L124 PetriNetUnfolderBase]: 1797/2845 cut-off events. [2023-11-12 02:06:59,595 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-11-12 02:06:59,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5562 conditions, 2845 events. 1797/2845 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 17106 event pairs, 377 based on Foata normal form. 0/1915 useless extension candidates. Maximal degree in co-relation 4815. Up to 1670 conditions per place. [2023-11-12 02:06:59,625 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 40 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-12 02:06:59,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 226 flow [2023-11-12 02:06:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-11-12 02:06:59,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314574314574315 [2023-11-12 02:06:59,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-11-12 02:06:59,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-11-12 02:06:59,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:59,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-11-12 02:06:59,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,638 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 100 flow. Second operand 3 states and 598 transitions. [2023-11-12 02:06:59,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 226 flow [2023-11-12 02:06:59,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:59,642 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 98 flow [2023-11-12 02:06:59,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-11-12 02:06:59,644 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-11-12 02:06:59,644 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 98 flow [2023-11-12 02:06:59,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:59,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:06:59,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:06:59,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:06:59,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:59,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1319002370, now seen corresponding path program 1 times [2023-11-12 02:06:59,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:59,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913318428] [2023-11-12 02:06:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:59,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:59,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:59,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913318428] [2023-11-12 02:06:59,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913318428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:59,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:59,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:59,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40855529] [2023-11-12 02:06:59,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:59,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:59,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:59,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:59,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:59,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 462 [2023-11-12 02:06:59,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:59,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:59,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 462 [2023-11-12 02:06:59,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:00,209 INFO L124 PetriNetUnfolderBase]: 2036/3258 cut-off events. [2023-11-12 02:07:00,209 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2023-11-12 02:07:00,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 3258 events. 2036/3258 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 19409 event pairs, 1187 based on Foata normal form. 0/2232 useless extension candidates. Maximal degree in co-relation 3554. Up to 2338 conditions per place. [2023-11-12 02:07:00,242 INFO L140 encePairwiseOnDemand]: 458/462 looper letters, 41 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-12 02:07:00,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 230 flow [2023-11-12 02:07:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-11-12 02:07:00,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-12 02:07:00,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-11-12 02:07:00,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-11-12 02:07:00,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:00,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-11-12 02:07:00,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,253 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 98 flow. Second operand 3 states and 594 transitions. [2023-11-12 02:07:00,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 230 flow [2023-11-12 02:07:00,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:00,257 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 108 flow [2023-11-12 02:07:00,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-12 02:07:00,258 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-12 02:07:00,258 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 108 flow [2023-11-12 02:07:00,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:00,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:07:00,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:07:00,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:07:00,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:00,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2060597458, now seen corresponding path program 1 times [2023-11-12 02:07:00,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:00,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651134292] [2023-11-12 02:07:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:00,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:00,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:00,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651134292] [2023-11-12 02:07:00,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651134292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:00,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:00,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:00,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817345098] [2023-11-12 02:07:00,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:00,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:00,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:00,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-12 02:07:00,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:00,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-12 02:07:00,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:00,702 INFO L124 PetriNetUnfolderBase]: 1797/2845 cut-off events. [2023-11-12 02:07:00,703 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2023-11-12 02:07:00,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5905 conditions, 2845 events. 1797/2845 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 16847 event pairs, 377 based on Foata normal form. 0/2029 useless extension candidates. Maximal degree in co-relation 5151. Up to 1670 conditions per place. [2023-11-12 02:07:00,731 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 40 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-12 02:07:00,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 232 flow [2023-11-12 02:07:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-11-12 02:07:00,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43073593073593075 [2023-11-12 02:07:00,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-11-12 02:07:00,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-11-12 02:07:00,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:00,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-11-12 02:07:00,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,743 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 108 flow. Second operand 3 states and 597 transitions. [2023-11-12 02:07:00,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 232 flow [2023-11-12 02:07:00,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 228 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:00,745 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 104 flow [2023-11-12 02:07:00,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-11-12 02:07:00,746 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-12 02:07:00,746 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 104 flow [2023-11-12 02:07:00,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:00,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:00,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:07:00,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:07:00,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash -698186523, now seen corresponding path program 1 times [2023-11-12 02:07:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:00,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066301115] [2023-11-12 02:07:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:00,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:07:00,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:00,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066301115] [2023-11-12 02:07:00,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066301115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:00,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:00,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:00,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966448004] [2023-11-12 02:07:00,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:00,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:00,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:00,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:00,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:00,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-12 02:07:00,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:00,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:00,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-12 02:07:00,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:01,253 INFO L124 PetriNetUnfolderBase]: 1749/2703 cut-off events. [2023-11-12 02:07:01,253 INFO L125 PetriNetUnfolderBase]: For 732/732 co-relation queries the response was YES. [2023-11-12 02:07:01,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5763 conditions, 2703 events. 1749/2703 cut-off events. For 732/732 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15292 event pairs, 399 based on Foata normal form. 0/1936 useless extension candidates. Maximal degree in co-relation 3661. Up to 1746 conditions per place. [2023-11-12 02:07:01,276 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 38 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-12 02:07:01,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 227 flow [2023-11-12 02:07:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-11-12 02:07:01,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-12 02:07:01,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-11-12 02:07:01,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-11-12 02:07:01,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:01,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-11-12 02:07:01,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,288 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 104 flow. Second operand 3 states and 594 transitions. [2023-11-12 02:07:01,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 227 flow [2023-11-12 02:07:01,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:01,293 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 102 flow [2023-11-12 02:07:01,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-11-12 02:07:01,293 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-11-12 02:07:01,294 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 102 flow [2023-11-12 02:07:01,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:01,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:01,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:07:01,294 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:07:01,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:01,295 INFO L85 PathProgramCache]: Analyzing trace with hash -698186246, now seen corresponding path program 1 times [2023-11-12 02:07:01,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:01,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894636910] [2023-11-12 02:07:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:01,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:07:01,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:01,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894636910] [2023-11-12 02:07:01,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894636910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:01,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:01,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295996733] [2023-11-12 02:07:01,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:01,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:01,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-12 02:07:01,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:01,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-12 02:07:01,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:01,693 INFO L124 PetriNetUnfolderBase]: 1515/2373 cut-off events. [2023-11-12 02:07:01,693 INFO L125 PetriNetUnfolderBase]: For 458/458 co-relation queries the response was YES. [2023-11-12 02:07:01,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5001 conditions, 2373 events. 1515/2373 cut-off events. For 458/458 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13204 event pairs, 375 based on Foata normal form. 0/1754 useless extension candidates. Maximal degree in co-relation 2138. Up to 1416 conditions per place. [2023-11-12 02:07:01,730 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 37 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-12 02:07:01,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 219 flow [2023-11-12 02:07:01,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-11-12 02:07:01,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42784992784992787 [2023-11-12 02:07:01,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-11-12 02:07:01,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-11-12 02:07:01,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:01,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-11-12 02:07:01,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,741 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 102 flow. Second operand 3 states and 593 transitions. [2023-11-12 02:07:01,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 219 flow [2023-11-12 02:07:01,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:01,745 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 100 flow [2023-11-12 02:07:01,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-12 02:07:01,746 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2023-11-12 02:07:01,747 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 100 flow [2023-11-12 02:07:01,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:01,748 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:01,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 02:07:01,748 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:07:01,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:01,748 INFO L85 PathProgramCache]: Analyzing trace with hash -698186402, now seen corresponding path program 1 times [2023-11-12 02:07:01,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:01,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446184079] [2023-11-12 02:07:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:01,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:07:01,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446184079] [2023-11-12 02:07:01,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446184079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:01,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:01,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843510118] [2023-11-12 02:07:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:01,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:01,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:01,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:01,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-12 02:07:01,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:01,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:01,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-12 02:07:01,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:02,092 INFO L124 PetriNetUnfolderBase]: 1305/2115 cut-off events. [2023-11-12 02:07:02,092 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2023-11-12 02:07:02,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 2115 events. 1305/2115 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11887 event pairs, 327 based on Foata normal form. 0/1620 useless extension candidates. Maximal degree in co-relation 1867. Up to 1086 conditions per place. [2023-11-12 02:07:02,109 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 36 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-12 02:07:02,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 215 flow [2023-11-12 02:07:02,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-11-12 02:07:02,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42712842712842713 [2023-11-12 02:07:02,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-11-12 02:07:02,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-11-12 02:07:02,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:02,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-11-12 02:07:02,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,119 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 100 flow. Second operand 3 states and 592 transitions. [2023-11-12 02:07:02,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 215 flow [2023-11-12 02:07:02,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:02,122 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 98 flow [2023-11-12 02:07:02,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-11-12 02:07:02,122 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-12 02:07:02,123 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 98 flow [2023-11-12 02:07:02,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:02,123 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:02,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 02:07:02,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:07:02,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash -446568882, now seen corresponding path program 1 times [2023-11-12 02:07:02,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:02,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226251069] [2023-11-12 02:07:02,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:02,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:07:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:02,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226251069] [2023-11-12 02:07:02,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226251069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:02,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032861642] [2023-11-12 02:07:02,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:02,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:02,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:02,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:02,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:02,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-12 02:07:02,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:02,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-12 02:07:02,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:02,512 INFO L124 PetriNetUnfolderBase]: 1255/1977 cut-off events. [2023-11-12 02:07:02,512 INFO L125 PetriNetUnfolderBase]: For 506/506 co-relation queries the response was YES. [2023-11-12 02:07:02,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 1977 events. 1255/1977 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10319 event pairs, 305 based on Foata normal form. 0/1531 useless extension candidates. Maximal degree in co-relation 1795. Up to 1110 conditions per place. [2023-11-12 02:07:02,532 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 33 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-12 02:07:02,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 200 flow [2023-11-12 02:07:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:02,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-11-12 02:07:02,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424963924963925 [2023-11-12 02:07:02,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-11-12 02:07:02,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-11-12 02:07:02,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:02,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-11-12 02:07:02,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 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) [2023-11-12 02:07:02,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,546 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 98 flow. Second operand 3 states and 589 transitions. [2023-11-12 02:07:02,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 200 flow [2023-11-12 02:07:02,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:02,548 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 96 flow [2023-11-12 02:07:02,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-11-12 02:07:02,549 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2023-11-12 02:07:02,549 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 96 flow [2023-11-12 02:07:02,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:02,550 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:02,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 02:07:02,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:07:02,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:02,551 INFO L85 PathProgramCache]: Analyzing trace with hash -446568483, now seen corresponding path program 1 times [2023-11-12 02:07:02,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:02,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379066923] [2023-11-12 02:07:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:02,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:07:02,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:02,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379066923] [2023-11-12 02:07:02,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379066923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:02,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:02,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:02,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257726790] [2023-11-12 02:07:02,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:02,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:02,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:02,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:02,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 462 [2023-11-12 02:07:02,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:02,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:02,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 462 [2023-11-12 02:07:02,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:03,029 INFO L124 PetriNetUnfolderBase]: 1555/2397 cut-off events. [2023-11-12 02:07:03,029 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2023-11-12 02:07:03,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5037 conditions, 2397 events. 1555/2397 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12466 event pairs, 945 based on Foata normal form. 0/1847 useless extension candidates. Maximal degree in co-relation 2139. Up to 1678 conditions per place. [2023-11-12 02:07:03,047 INFO L140 encePairwiseOnDemand]: 458/462 looper letters, 35 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-12 02:07:03,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 204 flow [2023-11-12 02:07:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-11-12 02:07:03,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227994227994228 [2023-11-12 02:07:03,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-11-12 02:07:03,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-11-12 02:07:03,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:03,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-11-12 02:07:03,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,057 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 96 flow. Second operand 3 states and 586 transitions. [2023-11-12 02:07:03,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 204 flow [2023-11-12 02:07:03,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 49 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:03,061 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 106 flow [2023-11-12 02:07:03,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-11-12 02:07:03,061 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-12 02:07:03,061 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 106 flow [2023-11-12 02:07:03,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:03,062 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:03,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 02:07:03,062 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:07:03,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:03,063 INFO L85 PathProgramCache]: Analyzing trace with hash -446568630, now seen corresponding path program 1 times [2023-11-12 02:07:03,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:03,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030436606] [2023-11-12 02:07:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:03,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:07:03,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030436606] [2023-11-12 02:07:03,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030436606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:03,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:03,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:03,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773970409] [2023-11-12 02:07:03,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:03,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:03,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:03,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:03,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:03,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-12 02:07:03,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:03,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-12 02:07:03,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:03,394 INFO L124 PetriNetUnfolderBase]: 1255/1977 cut-off events. [2023-11-12 02:07:03,394 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2023-11-12 02:07:03,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 1977 events. 1255/1977 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10153 event pairs, 305 based on Foata normal form. 120/1711 useless extension candidates. Maximal degree in co-relation 1879. Up to 1110 conditions per place. [2023-11-12 02:07:03,410 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 33 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-12 02:07:03,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 204 flow [2023-11-12 02:07:03,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:03,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:03,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2023-11-12 02:07:03,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2023-11-12 02:07:03,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2023-11-12 02:07:03,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2023-11-12 02:07:03,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:03,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2023-11-12 02:07:03,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,428 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 106 flow. Second operand 3 states and 588 transitions. [2023-11-12 02:07:03,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 204 flow [2023-11-12 02:07:03,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 200 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:03,431 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 104 flow [2023-11-12 02:07:03,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-12 02:07:03,432 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-12 02:07:03,432 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 104 flow [2023-11-12 02:07:03,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:03,433 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:03,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-12 02:07:03,433 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:07:03,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:03,433 INFO L85 PathProgramCache]: Analyzing trace with hash -958719769, now seen corresponding path program 1 times [2023-11-12 02:07:03,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:03,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905491088] [2023-11-12 02:07:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:03,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:07:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905491088] [2023-11-12 02:07:03,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905491088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:03,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:03,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:03,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525722590] [2023-11-12 02:07:03,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:03,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:03,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-12 02:07:03,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:03,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-12 02:07:03,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:03,782 INFO L124 PetriNetUnfolderBase]: 1105/1767 cut-off events. [2023-11-12 02:07:03,782 INFO L125 PetriNetUnfolderBase]: For 441/441 co-relation queries the response was YES. [2023-11-12 02:07:03,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3868 conditions, 1767 events. 1105/1767 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8966 event pairs, 305 based on Foata normal form. 0/1463 useless extension candidates. Maximal degree in co-relation 1659. Up to 900 conditions per place. [2023-11-12 02:07:03,798 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 32 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-12 02:07:03,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 198 flow [2023-11-12 02:07:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 587 transitions. [2023-11-12 02:07:03,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235209235209235 [2023-11-12 02:07:03,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 587 transitions. [2023-11-12 02:07:03,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 587 transitions. [2023-11-12 02:07:03,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:03,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 587 transitions. [2023-11-12 02:07:03,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,809 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 104 flow. Second operand 3 states and 587 transitions. [2023-11-12 02:07:03,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 198 flow [2023-11-12 02:07:03,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:03,813 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 100 flow [2023-11-12 02:07:03,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-11-12 02:07:03,814 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2023-11-12 02:07:03,814 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 100 flow [2023-11-12 02:07:03,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:03,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:03,814 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-12 02:07:03,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-12 02:07:03,815 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:07:03,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash 329700860, now seen corresponding path program 1 times [2023-11-12 02:07:03,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:03,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701054424] [2023-11-12 02:07:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:07:03,840 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:07:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:07:03,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:07:03,864 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:07:03,866 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-12 02:07:03,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-12 02:07:03,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-12 02:07:03,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-12 02:07:03,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-12 02:07:03,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-12 02:07:03,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-12 02:07:03,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-12 02:07:03,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-12 02:07:03,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-12 02:07:03,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-12 02:07:03,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-12 02:07:03,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-12 02:07:03,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-12 02:07:03,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-12 02:07:03,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-12 02:07:03,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-12 02:07:03,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-12 02:07:03,871 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:03,875 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:07:03,875 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-12 02:07:03,916 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:07:03,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 277 transitions, 582 flow [2023-11-12 02:07:03,974 INFO L124 PetriNetUnfolderBase]: 37/327 cut-off events. [2023-11-12 02:07:03,974 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:07:03,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 327 events. 37/327 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1084 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 261. Up to 10 conditions per place. [2023-11-12 02:07:03,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 277 transitions, 582 flow [2023-11-12 02:07:03,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 277 transitions, 582 flow [2023-11-12 02:07:03,983 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:07:03,983 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 277 transitions, 582 flow [2023-11-12 02:07:03,983 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 277 transitions, 582 flow [2023-11-12 02:07:03,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 277 transitions, 582 flow [2023-11-12 02:07:04,039 INFO L124 PetriNetUnfolderBase]: 37/327 cut-off events. [2023-11-12 02:07:04,039 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:07:04,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 327 events. 37/327 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1084 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 261. Up to 10 conditions per place. [2023-11-12 02:07:04,068 INFO L119 LiptonReduction]: Number of co-enabled transitions 50640 [2023-11-12 02:07:12,203 INFO L134 LiptonReduction]: Checked pairs total: 73821 [2023-11-12 02:07:12,204 INFO L136 LiptonReduction]: Total number of compositions: 332 [2023-11-12 02:07:12,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:12,206 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dc63e72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:12,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-12 02:07:12,208 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:07:12,209 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-12 02:07:12,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:12,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:12,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:07:12,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:07:12,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:12,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1952463307, now seen corresponding path program 1 times [2023-11-12 02:07:12,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:12,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890988642] [2023-11-12 02:07:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:12,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:12,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890988642] [2023-11-12 02:07:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890988642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:12,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:12,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381421200] [2023-11-12 02:07:12,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:12,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:12,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:12,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-12 02:07:12,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:12,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:12,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-12 02:07:12,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:14,983 INFO L124 PetriNetUnfolderBase]: 20104/28240 cut-off events. [2023-11-12 02:07:14,983 INFO L125 PetriNetUnfolderBase]: For 4193/4193 co-relation queries the response was YES. [2023-11-12 02:07:15,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54858 conditions, 28240 events. 20104/28240 cut-off events. For 4193/4193 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 189667 event pairs, 4003 based on Foata normal form. 0/17894 useless extension candidates. Maximal degree in co-relation 6308. Up to 18425 conditions per place. [2023-11-12 02:07:15,391 INFO L140 encePairwiseOnDemand]: 597/609 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-11-12 02:07:15,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 321 flow [2023-11-12 02:07:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2023-11-12 02:07:15,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43240284619594965 [2023-11-12 02:07:15,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2023-11-12 02:07:15,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2023-11-12 02:07:15,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:15,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2023-11-12 02:07:15,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:15,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:15,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:15,408 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 152 flow. Second operand 3 states and 790 transitions. [2023-11-12 02:07:15,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 321 flow [2023-11-12 02:07:15,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 309 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-12 02:07:15,413 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 130 flow [2023-11-12 02:07:15,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-11-12 02:07:15,414 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2023-11-12 02:07:15,415 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 130 flow [2023-11-12 02:07:15,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:15,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:15,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:07:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-12 02:07:15,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:07:15,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1952463681, now seen corresponding path program 1 times [2023-11-12 02:07:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:15,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582256303] [2023-11-12 02:07:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:15,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:15,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:15,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582256303] [2023-11-12 02:07:15,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582256303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:15,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:15,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:15,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112873963] [2023-11-12 02:07:15,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:15,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:15,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:15,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:15,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:15,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 609 [2023-11-12 02:07:15,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:15,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:15,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 609 [2023-11-12 02:07:15,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:19,994 INFO L124 PetriNetUnfolderBase]: 25324/35786 cut-off events. [2023-11-12 02:07:19,995 INFO L125 PetriNetUnfolderBase]: For 4802/4802 co-relation queries the response was YES. [2023-11-12 02:07:20,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70662 conditions, 35786 events. 25324/35786 cut-off events. For 4802/4802 co-relation queries the response was YES. Maximal size of possible extension queue 1842. Compared 241694 event pairs, 16008 based on Foata normal form. 0/22638 useless extension candidates. Maximal degree in co-relation 39002. Up to 24679 conditions per place. [2023-11-12 02:07:20,487 INFO L140 encePairwiseOnDemand]: 605/609 looper letters, 59 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-11-12 02:07:20,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 321 flow [2023-11-12 02:07:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2023-11-12 02:07:20,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4220032840722496 [2023-11-12 02:07:20,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2023-11-12 02:07:20,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2023-11-12 02:07:20,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:20,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2023-11-12 02:07:20,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,501 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 130 flow. Second operand 3 states and 771 transitions. [2023-11-12 02:07:20,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 321 flow [2023-11-12 02:07:20,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 79 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:20,510 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 140 flow [2023-11-12 02:07:20,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-11-12 02:07:20,511 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-12 02:07:20,512 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 140 flow [2023-11-12 02:07:20,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:20,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:07:20,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-12 02:07:20,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:07:20,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:20,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1952463485, now seen corresponding path program 1 times [2023-11-12 02:07:20,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:20,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761334091] [2023-11-12 02:07:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:20,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:20,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:20,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761334091] [2023-11-12 02:07:20,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761334091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:20,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:20,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:20,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534024981] [2023-11-12 02:07:20,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:20,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:20,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:20,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:20,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-12 02:07:20,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:20,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-12 02:07:20,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:23,439 INFO L124 PetriNetUnfolderBase]: 20104/28240 cut-off events. [2023-11-12 02:07:23,439 INFO L125 PetriNetUnfolderBase]: For 4069/4069 co-relation queries the response was YES. [2023-11-12 02:07:23,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58925 conditions, 28240 events. 20104/28240 cut-off events. For 4069/4069 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 188832 event pairs, 4003 based on Foata normal form. 1600/20294 useless extension candidates. Maximal degree in co-relation 52576. Up to 18425 conditions per place. [2023-11-12 02:07:23,694 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-11-12 02:07:23,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 321 flow [2023-11-12 02:07:23,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-11-12 02:07:23,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42309797482211275 [2023-11-12 02:07:23,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-11-12 02:07:23,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-11-12 02:07:23,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:23,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-11-12 02:07:23,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,709 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 140 flow. Second operand 3 states and 773 transitions. [2023-11-12 02:07:23,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 321 flow [2023-11-12 02:07:23,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 317 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:23,717 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 138 flow [2023-11-12 02:07:23,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-12 02:07:23,717 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-12 02:07:23,718 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 138 flow [2023-11-12 02:07:23,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:23,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:07:23,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-12 02:07:23,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:07:23,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash 396835730, now seen corresponding path program 1 times [2023-11-12 02:07:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:23,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767353501] [2023-11-12 02:07:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:23,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:23,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:23,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767353501] [2023-11-12 02:07:23,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767353501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:23,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:23,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992276941] [2023-11-12 02:07:23,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:23,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:23,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-12 02:07:23,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:23,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-12 02:07:23,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand