./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c4f91361 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 16:08:01,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 16:08:01,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 16:08:01,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 16:08:01,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 16:08:01,990 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 16:08:01,991 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 16:08:01,991 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 16:08:01,992 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 16:08:01,996 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 16:08:01,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 16:08:01,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 16:08:01,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 16:08:01,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 16:08:01,999 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 16:08:01,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 16:08:02,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 16:08:02,000 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 16:08:02,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 16:08:02,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 16:08:02,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 16:08:02,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 16:08:02,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 16:08:02,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 16:08:02,002 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 16:08:02,003 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 16:08:02,003 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 16:08:02,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 16:08:02,003 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 16:08:02,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 16:08:02,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 16:08:02,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 16:08:02,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 16:08:02,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 16:08:02,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 16:08:02,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 16:08:02,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 16:08:02,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 16:08:02,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 16:08:02,007 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 16:08:02,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 16:08:02,008 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 16:08:02,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 16:08:02,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 16:08:02,009 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2023-11-23 16:08:02,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 16:08:02,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 16:08:02,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 16:08:02,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 16:08:02,316 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 16:08:02,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-11-23 16:08:03,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 16:08:03,603 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 16:08:03,604 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-11-23 16:08:03,614 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b309c437c/3dc13d8687cf45608c177478fb68558a/FLAG3a4690b72 [2023-11-23 16:08:03,629 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b309c437c/3dc13d8687cf45608c177478fb68558a [2023-11-23 16:08:03,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 16:08:03,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 16:08:03,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 16:08:03,638 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 16:08:03,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 16:08:03,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:03,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7513fc71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03, skipping insertion in model container [2023-11-23 16:08:03,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:03,678 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 16:08:03,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 16:08:03,844 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 16:08:03,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 16:08:03,883 INFO L206 MainTranslator]: Completed translation [2023-11-23 16:08:03,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03 WrapperNode [2023-11-23 16:08:03,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 16:08:03,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 16:08:03,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 16:08:03,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 16:08:03,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:03,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:03,938 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 354 [2023-11-23 16:08:03,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 16:08:03,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 16:08:03,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 16:08:03,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 16:08:03,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:03,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:03,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:03,971 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2023-11-23 16:08:03,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:03,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:03,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:04,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:04,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:04,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:04,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 16:08:04,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 16:08:04,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 16:08:04,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 16:08:04,011 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (1/1) ... [2023-11-23 16:08:04,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 16:08:04,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:08:04,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 16:08:04,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 16:08:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 16:08:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 16:08:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 16:08:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 16:08:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 16:08:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 16:08:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 16:08:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 16:08:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 16:08:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 16:08:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 16:08:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 16:08:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 16:08:04,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 16:08:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 16:08:04,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 16:08:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 16:08:04,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 16:08:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 16:08:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 16:08:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 16:08:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 16:08:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 16:08:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 16:08:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 16:08:04,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 16:08:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 16:08:04,099 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 16:08:04,214 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 16:08:04,216 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 16:08:04,727 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 16:08:05,088 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 16:08:05,088 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 16:08:05,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:08:05 BoogieIcfgContainer [2023-11-23 16:08:05,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 16:08:05,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 16:08:05,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 16:08:05,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 16:08:05,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:08:03" (1/3) ... [2023-11-23 16:08:05,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4715a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:08:05, skipping insertion in model container [2023-11-23 16:08:05,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:03" (2/3) ... [2023-11-23 16:08:05,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4715a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:08:05, skipping insertion in model container [2023-11-23 16:08:05,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:08:05" (3/3) ... [2023-11-23 16:08:05,100 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-11-23 16:08:05,109 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 16:08:05,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 16:08:05,118 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-23 16:08:05,118 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 16:08:05,199 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 16:08:05,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 130 transitions, 281 flow [2023-11-23 16:08:05,296 INFO L124 PetriNetUnfolderBase]: 15/127 cut-off events. [2023-11-23 16:08:05,296 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 16:08:05,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 15/127 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 500 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-23 16:08:05,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 130 transitions, 281 flow [2023-11-23 16:08:05,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 125 transitions, 265 flow [2023-11-23 16:08:05,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 16:08:05,335 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;@1bd01a95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 16:08:05,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-23 16:08:05,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 16:08:05,338 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-23 16:08:05,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 16:08:05,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:08:05,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 16:08:05,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-23 16:08:05,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:08:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1004457, now seen corresponding path program 1 times [2023-11-23 16:08:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:08:05,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634158272] [2023-11-23 16:08:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:08:05,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:08:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:08:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:08:05,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:08:05,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634158272] [2023-11-23 16:08:05,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634158272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:08:05,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:08:05,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 16:08:05,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680499859] [2023-11-23 16:08:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:08:05,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 16:08:05,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:08:05,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 16:08:05,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 16:08:05,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2023-11-23 16:08:05,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 125 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:05,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:08:05,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2023-11-23 16:08:05,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:08:07,850 INFO L124 PetriNetUnfolderBase]: 10283/20242 cut-off events. [2023-11-23 16:08:07,851 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2023-11-23 16:08:07,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34185 conditions, 20242 events. 10283/20242 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 188336 event pairs, 6869 based on Foata normal form. 3/15357 useless extension candidates. Maximal degree in co-relation 31930. Up to 13555 conditions per place. [2023-11-23 16:08:08,027 INFO L140 encePairwiseOnDemand]: 114/130 looper letters, 64 selfloop transitions, 10 changer transitions 0/134 dead transitions. [2023-11-23 16:08:08,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 134 transitions, 431 flow [2023-11-23 16:08:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 16:08:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 16:08:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-11-23 16:08:08,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2023-11-23 16:08:08,053 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-11-23 16:08:08,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-11-23 16:08:08,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:08:08,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-11-23 16:08:08,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:08,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:08,070 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:08,072 INFO L175 Difference]: Start difference. First operand has 120 places, 125 transitions, 265 flow. Second operand 4 states and 332 transitions. [2023-11-23 16:08:08,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 134 transitions, 431 flow [2023-11-23 16:08:08,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 134 transitions, 422 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-23 16:08:08,087 INFO L231 Difference]: Finished difference. Result has 121 places, 134 transitions, 344 flow [2023-11-23 16:08:08,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=121, PETRI_TRANSITIONS=134} [2023-11-23 16:08:08,093 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2023-11-23 16:08:08,094 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 134 transitions, 344 flow [2023-11-23 16:08:08,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:08,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:08:08,095 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 16:08:08,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 16:08:08,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-23 16:08:08,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:08:08,096 INFO L85 PathProgramCache]: Analyzing trace with hash -139937195, now seen corresponding path program 1 times [2023-11-23 16:08:08,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:08:08,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343366468] [2023-11-23 16:08:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:08:08,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:08:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:08:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:08:08,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:08:08,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343366468] [2023-11-23 16:08:08,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343366468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:08:08,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346376553] [2023-11-23 16:08:08,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:08:08,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:08:08,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:08:08,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 16:08:08,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 16:08:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:08:08,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 16:08:08,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:08:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:08:08,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 16:08:08,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346376553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:08:08,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 16:08:08,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 16:08:08,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626035907] [2023-11-23 16:08:08,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:08:08,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 16:08:08,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:08:08,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 16:08:08,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 16:08:08,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2023-11-23 16:08:08,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 134 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:08,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:08:08,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2023-11-23 16:08:08,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:08:10,191 INFO L124 PetriNetUnfolderBase]: 10283/20239 cut-off events. [2023-11-23 16:08:10,191 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-23 16:08:10,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34074 conditions, 20239 events. 10283/20239 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 188288 event pairs, 6869 based on Foata normal form. 3/15359 useless extension candidates. Maximal degree in co-relation 34001. Up to 13540 conditions per place. [2023-11-23 16:08:10,332 INFO L140 encePairwiseOnDemand]: 117/130 looper letters, 54 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2023-11-23 16:08:10,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 131 transitions, 474 flow [2023-11-23 16:08:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 16:08:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 16:08:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2023-11-23 16:08:10,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794871794871795 [2023-11-23 16:08:10,340 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 452 transitions. [2023-11-23 16:08:10,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 452 transitions. [2023-11-23 16:08:10,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:08:10,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 452 transitions. [2023-11-23 16:08:10,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.33333333333333) internal successors, (452), 6 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:10,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:10,345 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:10,346 INFO L175 Difference]: Start difference. First operand has 121 places, 134 transitions, 344 flow. Second operand 6 states and 452 transitions. [2023-11-23 16:08:10,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 131 transitions, 474 flow [2023-11-23 16:08:10,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 131 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 16:08:10,350 INFO L231 Difference]: Finished difference. Result has 123 places, 131 transitions, 366 flow [2023-11-23 16:08:10,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=123, PETRI_TRANSITIONS=131} [2023-11-23 16:08:10,352 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 3 predicate places. [2023-11-23 16:08:10,352 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 131 transitions, 366 flow [2023-11-23 16:08:10,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:10,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:08:10,353 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 16:08:10,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 16:08:10,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:08:10,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-23 16:08:10,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:08:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash -43084687, now seen corresponding path program 1 times [2023-11-23 16:08:10,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:08:10,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020468107] [2023-11-23 16:08:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:08:10,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:08:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:08:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:08:10,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:08:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020468107] [2023-11-23 16:08:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020468107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:08:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572680374] [2023-11-23 16:08:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:08:10,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:08:10,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:08:10,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 16:08:10,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 16:08:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:08:10,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 16:08:10,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:08:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:08:10,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 16:08:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:08:10,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572680374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 16:08:10,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 16:08:10,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-23 16:08:10,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792374086] [2023-11-23 16:08:10,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 16:08:10,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 16:08:10,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:08:10,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 16:08:10,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-23 16:08:10,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2023-11-23 16:08:10,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 366 flow. Second operand has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:10,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:08:10,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2023-11-23 16:08:10,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:08:12,475 INFO L124 PetriNetUnfolderBase]: 10292/20275 cut-off events. [2023-11-23 16:08:12,475 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-23 16:08:12,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34215 conditions, 20275 events. 10292/20275 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 188679 event pairs, 6869 based on Foata normal form. 9/15401 useless extension candidates. Maximal degree in co-relation 34003. Up to 13555 conditions per place. [2023-11-23 16:08:12,735 INFO L140 encePairwiseOnDemand]: 117/130 looper letters, 61 selfloop transitions, 37 changer transitions 0/158 dead transitions. [2023-11-23 16:08:12,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 158 transitions, 736 flow [2023-11-23 16:08:12,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 16:08:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 16:08:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 737 transitions. [2023-11-23 16:08:12,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566923076923077 [2023-11-23 16:08:12,742 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 737 transitions. [2023-11-23 16:08:12,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 737 transitions. [2023-11-23 16:08:12,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:08:12,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 737 transitions. [2023-11-23 16:08:12,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:12,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:12,747 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:12,747 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 366 flow. Second operand 10 states and 737 transitions. [2023-11-23 16:08:12,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 158 transitions, 736 flow [2023-11-23 16:08:12,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 158 transitions, 653 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-23 16:08:12,755 INFO L231 Difference]: Finished difference. Result has 130 places, 158 transitions, 581 flow [2023-11-23 16:08:12,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=581, PETRI_PLACES=130, PETRI_TRANSITIONS=158} [2023-11-23 16:08:12,757 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 10 predicate places. [2023-11-23 16:08:12,757 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 158 transitions, 581 flow [2023-11-23 16:08:12,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:12,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:08:12,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:08:12,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 16:08:12,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 16:08:12,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-23 16:08:12,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:08:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash -48530463, now seen corresponding path program 1 times [2023-11-23 16:08:12,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:08:12,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674093793] [2023-11-23 16:08:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:08:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:08:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:08:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:08:13,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:08:13,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674093793] [2023-11-23 16:08:13,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674093793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:08:13,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:08:13,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:08:13,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912209897] [2023-11-23 16:08:13,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:08:13,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 16:08:13,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:08:13,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 16:08:13,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 16:08:13,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-23 16:08:13,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 158 transitions, 581 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:13,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:08:13,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-23 16:08:13,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:08:15,784 INFO L124 PetriNetUnfolderBase]: 22503/43703 cut-off events. [2023-11-23 16:08:15,785 INFO L125 PetriNetUnfolderBase]: For 367/367 co-relation queries the response was YES. [2023-11-23 16:08:15,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74020 conditions, 43703 events. 22503/43703 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 2118. Compared 446059 event pairs, 14986 based on Foata normal form. 250/33708 useless extension candidates. Maximal degree in co-relation 73893. Up to 14818 conditions per place. [2023-11-23 16:08:16,057 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 153 selfloop transitions, 9 changer transitions 0/223 dead transitions. [2023-11-23 16:08:16,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 223 transitions, 1114 flow [2023-11-23 16:08:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 16:08:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 16:08:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2023-11-23 16:08:16,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696923076923077 [2023-11-23 16:08:16,063 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2023-11-23 16:08:16,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2023-11-23 16:08:16,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:08:16,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2023-11-23 16:08:16,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:16,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:16,067 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:16,068 INFO L175 Difference]: Start difference. First operand has 130 places, 158 transitions, 581 flow. Second operand 5 states and 453 transitions. [2023-11-23 16:08:16,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 223 transitions, 1114 flow [2023-11-23 16:08:16,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 223 transitions, 1067 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-23 16:08:16,076 INFO L231 Difference]: Finished difference. Result has 134 places, 159 transitions, 578 flow [2023-11-23 16:08:16,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=134, PETRI_TRANSITIONS=159} [2023-11-23 16:08:16,078 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 14 predicate places. [2023-11-23 16:08:16,078 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 159 transitions, 578 flow [2023-11-23 16:08:16,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:16,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:08:16,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:08:16,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 16:08:16,079 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-23 16:08:16,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:08:16,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1504443233, now seen corresponding path program 1 times [2023-11-23 16:08:16,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:08:16,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569749070] [2023-11-23 16:08:16,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:08:16,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:08:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:08:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:08:16,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:08:16,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569749070] [2023-11-23 16:08:16,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569749070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:08:16,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:08:16,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 16:08:16,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597234936] [2023-11-23 16:08:16,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:08:16,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 16:08:16,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:08:16,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 16:08:16,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 16:08:16,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-23 16:08:16,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 159 transitions, 578 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:16,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:08:16,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-23 16:08:16,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:08:21,283 INFO L124 PetriNetUnfolderBase]: 43508/84314 cut-off events. [2023-11-23 16:08:21,284 INFO L125 PetriNetUnfolderBase]: For 3113/3113 co-relation queries the response was YES. [2023-11-23 16:08:21,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144070 conditions, 84314 events. 43508/84314 cut-off events. For 3113/3113 co-relation queries the response was YES. Maximal size of possible extension queue 3899. Compared 932152 event pairs, 28848 based on Foata normal form. 498/65952 useless extension candidates. Maximal degree in co-relation 143859. Up to 28871 conditions per place. [2023-11-23 16:08:21,989 INFO L140 encePairwiseOnDemand]: 122/130 looper letters, 174 selfloop transitions, 7 changer transitions 0/242 dead transitions. [2023-11-23 16:08:21,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 242 transitions, 1260 flow [2023-11-23 16:08:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 16:08:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 16:08:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 462 transitions. [2023-11-23 16:08:21,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7107692307692308 [2023-11-23 16:08:21,992 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 462 transitions. [2023-11-23 16:08:21,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 462 transitions. [2023-11-23 16:08:21,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:08:21,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 462 transitions. [2023-11-23 16:08:21,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:22,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:22,002 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:22,002 INFO L175 Difference]: Start difference. First operand has 134 places, 159 transitions, 578 flow. Second operand 5 states and 462 transitions. [2023-11-23 16:08:22,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 242 transitions, 1260 flow [2023-11-23 16:08:22,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 242 transitions, 1255 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-23 16:08:22,011 INFO L231 Difference]: Finished difference. Result has 140 places, 163 transitions, 638 flow [2023-11-23 16:08:22,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=638, PETRI_PLACES=140, PETRI_TRANSITIONS=163} [2023-11-23 16:08:22,014 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 20 predicate places. [2023-11-23 16:08:22,014 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 163 transitions, 638 flow [2023-11-23 16:08:22,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:22,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:08:22,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:08:22,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 16:08:22,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-23 16:08:22,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:08:22,015 INFO L85 PathProgramCache]: Analyzing trace with hash 603358844, now seen corresponding path program 1 times [2023-11-23 16:08:22,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:08:22,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311009259] [2023-11-23 16:08:22,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:08:22,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:08:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:08:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:08:22,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:08:22,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311009259] [2023-11-23 16:08:22,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311009259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:08:22,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:08:22,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:08:22,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947078430] [2023-11-23 16:08:22,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:08:22,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 16:08:22,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:08:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 16:08:22,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 16:08:22,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-23 16:08:22,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 163 transitions, 638 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:22,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:08:22,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-23 16:08:22,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:08:33,770 INFO L124 PetriNetUnfolderBase]: 90644/175244 cut-off events. [2023-11-23 16:08:33,770 INFO L125 PetriNetUnfolderBase]: For 1193/1193 co-relation queries the response was YES. [2023-11-23 16:08:34,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296893 conditions, 175244 events. 90644/175244 cut-off events. For 1193/1193 co-relation queries the response was YES. Maximal size of possible extension queue 7584. Compared 2100368 event pairs, 60400 based on Foata normal form. 1088/135234 useless extension candidates. Maximal degree in co-relation 296680. Up to 59676 conditions per place. [2023-11-23 16:08:34,956 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 139 selfloop transitions, 11 changer transitions 0/213 dead transitions. [2023-11-23 16:08:34,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 213 transitions, 1044 flow [2023-11-23 16:08:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 16:08:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 16:08:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-11-23 16:08:34,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2023-11-23 16:08:34,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-11-23 16:08:34,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-11-23 16:08:34,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:08:34,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-11-23 16:08:34,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:34,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:34,960 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:34,960 INFO L175 Difference]: Start difference. First operand has 140 places, 163 transitions, 638 flow. Second operand 5 states and 450 transitions. [2023-11-23 16:08:34,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 213 transitions, 1044 flow [2023-11-23 16:08:34,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 213 transitions, 1042 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-23 16:08:34,966 INFO L231 Difference]: Finished difference. Result has 146 places, 164 transitions, 676 flow [2023-11-23 16:08:34,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=676, PETRI_PLACES=146, PETRI_TRANSITIONS=164} [2023-11-23 16:08:34,967 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 26 predicate places. [2023-11-23 16:08:34,967 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 164 transitions, 676 flow [2023-11-23 16:08:34,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:34,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:08:34,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:08:34,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 16:08:34,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-23 16:08:34,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:08:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1340261602, now seen corresponding path program 1 times [2023-11-23 16:08:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:08:34,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158770700] [2023-11-23 16:08:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:08:34,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:08:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:08:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:08:35,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:08:35,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158770700] [2023-11-23 16:08:35,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158770700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:08:35,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994072502] [2023-11-23 16:08:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:08:35,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:08:35,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:08:35,096 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 16:08:35,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 16:08:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:08:35,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 16:08:35,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:08:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 16:08:35,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 16:08:35,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994072502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:08:35,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 16:08:35,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-23 16:08:35,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276360970] [2023-11-23 16:08:35,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:08:35,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 16:08:35,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:08:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 16:08:35,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 16:08:35,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 130 [2023-11-23 16:08:35,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 164 transitions, 676 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:08:35,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:08:35,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 130 [2023-11-23 16:08:35,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand