./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/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_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/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_a6546fa6-6194-47e4-9b07-88afc3eda689/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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:22:24,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:22:24,308 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:22:24,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:22:24,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:22:24,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:22:24,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:22:24,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:22:24,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:22:24,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:22:24,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:22:24,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:22:24,365 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:22:24,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:22:24,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:22:24,368 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:22:24,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:22:24,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:22:24,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:22:24,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:22:24,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:22:24,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:22:24,372 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:22:24,372 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:22:24,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:22:24,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:22:24,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:22:24,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:22:24,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:22:24,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:22:24,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:24,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:22:24,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:22:24,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:22:24,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:22:24,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:22:24,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:22:24,379 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:22:24,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:22:24,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:22:24,379 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:22:24,380 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_a6546fa6-6194-47e4-9b07-88afc3eda689/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2023-11-12 02:22:24,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:22:24,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:22:24,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:22:24,743 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:22:24,743 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:22:24,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-12 02:22:27,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:22:28,069 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:22:28,069 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-12 02:22:28,079 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/data/e75dc1e59/b95b25e0289a4b26849519952eac8655/FLAGc3e19e7d1 [2023-11-12 02:22:28,094 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/data/e75dc1e59/b95b25e0289a4b26849519952eac8655 [2023-11-12 02:22:28,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:22:28,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:22:28,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:28,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:22:28,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:22:28,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2732f75d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28, skipping insertion in model container [2023-11-12 02:22:28,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,140 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:28,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:28,356 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:22:28,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:28,428 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:22:28,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28 WrapperNode [2023-11-12 02:22:28,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:28,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:28,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:22:28,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:22:28,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,487 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 195 [2023-11-12 02:22:28,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:28,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:22:28,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:22:28,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:22:28,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:22:28,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:22:28,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:22:28,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:22:28,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (1/1) ... [2023-11-12 02:22:28,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:28,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:28,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:22:28,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:22:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:22:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:22:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:22:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:22:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:22:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:22:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:22:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:22:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:22:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:22:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:22:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:22:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:22:28,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:22:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:22:28,698 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 02:22:28,891 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:22:28,893 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:22:29,493 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:22:29,519 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:22:29,519 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:22:29,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:29 BoogieIcfgContainer [2023-11-12 02:22:29,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:22:29,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:22:29,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:22:29,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:22:29,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:22:28" (1/3) ... [2023-11-12 02:22:29,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145c5976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:29, skipping insertion in model container [2023-11-12 02:22:29,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:28" (2/3) ... [2023-11-12 02:22:29,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145c5976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:29, skipping insertion in model container [2023-11-12 02:22:29,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:29" (3/3) ... [2023-11-12 02:22:29,538 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-11-12 02:22:29,548 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:22:29,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:22:29,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-12 02:22:29,556 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:22:29,688 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:22:29,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 362 transitions, 745 flow [2023-11-12 02:22:30,001 INFO L124 PetriNetUnfolderBase]: 29/359 cut-off events. [2023-11-12 02:22:30,004 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:22:30,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 359 events. 29/359 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 575 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 281. Up to 3 conditions per place. [2023-11-12 02:22:30,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 343 places, 362 transitions, 745 flow [2023-11-12 02:22:30,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 327 transitions, 669 flow [2023-11-12 02:22:30,067 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:22:30,091 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 327 transitions, 669 flow [2023-11-12 02:22:30,098 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 327 transitions, 669 flow [2023-11-12 02:22:30,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 327 transitions, 669 flow [2023-11-12 02:22:30,191 INFO L124 PetriNetUnfolderBase]: 27/327 cut-off events. [2023-11-12 02:22:30,191 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:22:30,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 327 events. 27/327 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 570 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 281. Up to 3 conditions per place. [2023-11-12 02:22:30,207 INFO L119 LiptonReduction]: Number of co-enabled transitions 12480 [2023-11-12 02:22:45,673 INFO L134 LiptonReduction]: Checked pairs total: 18124 [2023-11-12 02:22:45,674 INFO L136 LiptonReduction]: Total number of compositions: 363 [2023-11-12 02:22:45,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:22:45,698 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;@7a384be3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:22:45,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-12 02:22:45,702 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:22:45,703 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:22:45,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:22:45,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:45,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:22:45,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:22:45,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash 43576, now seen corresponding path program 1 times [2023-11-12 02:22:45,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:45,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167406182] [2023-11-12 02:22:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:45,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:46,077 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 02:22:46,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:46,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167406182] [2023-11-12 02:22:46,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167406182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:46,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:46,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:46,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052588845] [2023-11-12 02:22:46,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:46,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:46,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:46,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 725 [2023-11-12 02:22:46,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 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 02:22:46,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:46,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 725 [2023-11-12 02:22:46,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:47,394 INFO L124 PetriNetUnfolderBase]: 5587/7556 cut-off events. [2023-11-12 02:22:47,394 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2023-11-12 02:22:47,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15435 conditions, 7556 events. 5587/7556 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34375 event pairs, 4037 based on Foata normal form. 0/3609 useless extension candidates. Maximal degree in co-relation 14220. Up to 7544 conditions per place. [2023-11-12 02:22:47,458 INFO L140 encePairwiseOnDemand]: 712/725 looper letters, 55 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-11-12 02:22:47,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 265 flow [2023-11-12 02:22:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1046 transitions. [2023-11-12 02:22:47,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48091954022988503 [2023-11-12 02:22:47,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1046 transitions. [2023-11-12 02:22:47,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1046 transitions. [2023-11-12 02:22:47,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:47,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1046 transitions. [2023-11-12 02:22:47,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 0 states have call successors, (0), 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 02:22:47,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 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 02:22:47,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 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 02:22:47,521 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1046 transitions. [2023-11-12 02:22:47,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 265 flow [2023-11-12 02:22:47,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 256 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:22:47,532 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 184 flow [2023-11-12 02:22:47,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2023-11-12 02:22:47,539 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-11-12 02:22:47,540 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 184 flow [2023-11-12 02:22:47,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 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 02:22:47,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:47,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:22:47,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:22:47,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:22:47,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:47,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1353364, now seen corresponding path program 1 times [2023-11-12 02:22:47,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:47,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447376341] [2023-11-12 02:22:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:47,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:47,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:47,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447376341] [2023-11-12 02:22:47,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447376341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:47,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175889603] [2023-11-12 02:22:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:47,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:47,745 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:47,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:22:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:47,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:22:47,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:47,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:47,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175889603] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:47,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:22:47,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:22:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424742679] [2023-11-12 02:22:47,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:47,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:22:47,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:22:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:48,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 725 [2023-11-12 02:22:48,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 0 states have call successors, (0), 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 02:22:48,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:48,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 725 [2023-11-12 02:22:48,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:49,221 INFO L124 PetriNetUnfolderBase]: 5605/7583 cut-off events. [2023-11-12 02:22:49,221 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-12 02:22:49,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15452 conditions, 7583 events. 5605/7583 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34465 event pairs, 4037 based on Foata normal form. 0/3628 useless extension candidates. Maximal degree in co-relation 15297. Up to 7544 conditions per place. [2023-11-12 02:22:49,294 INFO L140 encePairwiseOnDemand]: 712/725 looper letters, 52 selfloop transitions, 37 changer transitions 0/90 dead transitions. [2023-11-12 02:22:49,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 90 transitions, 482 flow [2023-11-12 02:22:49,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:22:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:22:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2380 transitions. [2023-11-12 02:22:49,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689655172413793 [2023-11-12 02:22:49,305 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2380 transitions. [2023-11-12 02:22:49,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2380 transitions. [2023-11-12 02:22:49,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:49,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2380 transitions. [2023-11-12 02:22:49,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.0) internal successors, (2380), 7 states have internal predecessors, (2380), 0 states have call successors, (0), 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 02:22:49,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 725.0) internal successors, (5800), 8 states have internal predecessors, (5800), 0 states have call successors, (0), 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 02:22:49,338 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 725.0) internal successors, (5800), 8 states have internal predecessors, (5800), 0 states have call successors, (0), 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 02:22:49,338 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 184 flow. Second operand 7 states and 2380 transitions. [2023-11-12 02:22:49,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 90 transitions, 482 flow [2023-11-12 02:22:49,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:49,344 INFO L231 Difference]: Finished difference. Result has 62 places, 90 transitions, 414 flow [2023-11-12 02:22:49,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=62, PETRI_TRANSITIONS=90} [2023-11-12 02:22:49,348 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-12 02:22:49,349 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 90 transitions, 414 flow [2023-11-12 02:22:49,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 0 states have call successors, (0), 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 02:22:49,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:49,351 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-12 02:22:49,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:49,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:49,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:22:49,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:49,618 INFO L85 PathProgramCache]: Analyzing trace with hash 41955576, now seen corresponding path program 1 times [2023-11-12 02:22:49,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:49,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756345407] [2023-11-12 02:22:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:49,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:22:49,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:49,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756345407] [2023-11-12 02:22:49,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756345407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:49,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:49,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:49,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016616771] [2023-11-12 02:22:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:49,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:49,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:49,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:49,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 725 [2023-11-12 02:22:49,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 90 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 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 02:22:49,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:49,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 725 [2023-11-12 02:22:49,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:50,823 INFO L124 PetriNetUnfolderBase]: 5596/7571 cut-off events. [2023-11-12 02:22:50,824 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-12 02:22:50,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15462 conditions, 7571 events. 5596/7571 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34397 event pairs, 4037 based on Foata normal form. 0/3630 useless extension candidates. Maximal degree in co-relation 15368. Up to 7535 conditions per place. [2023-11-12 02:22:50,883 INFO L140 encePairwiseOnDemand]: 720/725 looper letters, 71 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2023-11-12 02:22:50,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 487 flow [2023-11-12 02:22:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-11-12 02:22:50,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754022988505747 [2023-11-12 02:22:50,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-11-12 02:22:50,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-11-12 02:22:50,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:50,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-11-12 02:22:50,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 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 02:22:50,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 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 02:22:50,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 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 02:22:50,901 INFO L175 Difference]: Start difference. First operand has 62 places, 90 transitions, 414 flow. Second operand 3 states and 1034 transitions. [2023-11-12 02:22:50,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 487 flow [2023-11-12 02:22:50,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 450 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:50,909 INFO L231 Difference]: Finished difference. Result has 59 places, 78 transitions, 308 flow [2023-11-12 02:22:50,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=59, PETRI_TRANSITIONS=78} [2023-11-12 02:22:50,910 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-12 02:22:50,911 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 78 transitions, 308 flow [2023-11-12 02:22:50,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 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 02:22:50,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:50,912 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:22:50,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:22:50,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:22:50,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:50,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1664681950, now seen corresponding path program 2 times [2023-11-12 02:22:50,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:50,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509651297] [2023-11-12 02:22:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:50,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:51,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:51,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509651297] [2023-11-12 02:22:51,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509651297] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:51,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987878212] [2023-11-12 02:22:51,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:22:51,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:51,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:51,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:51,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:22:51,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:22:51,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:22:51,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:22:51,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:22:51,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:51,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987878212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:51,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:22:51,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:22:51,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181386194] [2023-11-12 02:22:51,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:51,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:51,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:22:51,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 725 [2023-11-12 02:22:51,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 78 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 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 02:22:51,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:51,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 725 [2023-11-12 02:22:51,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:52,423 INFO L124 PetriNetUnfolderBase]: 5596/7570 cut-off events. [2023-11-12 02:22:52,424 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-12 02:22:52,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15442 conditions, 7570 events. 5596/7570 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34418 event pairs, 4037 based on Foata normal form. 1/3634 useless extension candidates. Maximal degree in co-relation 15362. Up to 7557 conditions per place. [2023-11-12 02:22:52,473 INFO L140 encePairwiseOnDemand]: 722/725 looper letters, 70 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-12 02:22:52,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 450 flow [2023-11-12 02:22:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1049 transitions. [2023-11-12 02:22:52,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48229885057471267 [2023-11-12 02:22:52,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1049 transitions. [2023-11-12 02:22:52,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1049 transitions. [2023-11-12 02:22:52,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:52,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1049 transitions. [2023-11-12 02:22:52,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.6666666666667) internal successors, (1049), 3 states have internal predecessors, (1049), 0 states have call successors, (0), 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 02:22:52,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 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 02:22:52,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 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 02:22:52,497 INFO L175 Difference]: Start difference. First operand has 59 places, 78 transitions, 308 flow. Second operand 3 states and 1049 transitions. [2023-11-12 02:22:52,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 450 flow [2023-11-12 02:22:52,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:52,502 INFO L231 Difference]: Finished difference. Result has 58 places, 77 transitions, 298 flow [2023-11-12 02:22:52,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=58, PETRI_TRANSITIONS=77} [2023-11-12 02:22:52,506 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-12 02:22:52,506 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 77 transitions, 298 flow [2023-11-12 02:22:52,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 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 02:22:52,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:52,507 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-12 02:22:52,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:52,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:52,714 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:22:52,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:52,714 INFO L85 PathProgramCache]: Analyzing trace with hash 763131180, now seen corresponding path program 1 times [2023-11-12 02:22:52,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:52,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393122696] [2023-11-12 02:22:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:52,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:52,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:52,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393122696] [2023-11-12 02:22:52,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393122696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:52,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266912794] [2023-11-12 02:22:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:52,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:52,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:52,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:52,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:22:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:22:52,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:52,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:53,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266912794] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:53,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:22:53,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-12 02:22:53,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271222089] [2023-11-12 02:22:53,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:53,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:22:53,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:53,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:22:53,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:22:53,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 725 [2023-11-12 02:22:53,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 77 transitions, 298 flow. Second operand has 13 states, 13 states have (on average 327.15384615384613) internal successors, (4253), 13 states have internal predecessors, (4253), 0 states have call successors, (0), 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 02:22:53,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:53,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 725 [2023-11-12 02:22:53,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:54,530 INFO L124 PetriNetUnfolderBase]: 5614/7606 cut-off events. [2023-11-12 02:22:54,530 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-12 02:22:54,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15580 conditions, 7606 events. 5614/7606 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34643 event pairs, 4037 based on Foata normal form. 12/3668 useless extension candidates. Maximal degree in co-relation 15477. Up to 7549 conditions per place. [2023-11-12 02:22:54,586 INFO L140 encePairwiseOnDemand]: 716/725 looper letters, 51 selfloop transitions, 61 changer transitions 0/113 dead transitions. [2023-11-12 02:22:54,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 738 flow [2023-11-12 02:22:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:22:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:22:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4036 transitions. [2023-11-12 02:22:54,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639080459770115 [2023-11-12 02:22:54,603 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4036 transitions. [2023-11-12 02:22:54,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4036 transitions. [2023-11-12 02:22:54,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:54,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4036 transitions. [2023-11-12 02:22:54,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 336.3333333333333) internal successors, (4036), 12 states have internal predecessors, (4036), 0 states have call successors, (0), 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 02:22:54,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 725.0) internal successors, (9425), 13 states have internal predecessors, (9425), 0 states have call successors, (0), 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 02:22:54,642 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 725.0) internal successors, (9425), 13 states have internal predecessors, (9425), 0 states have call successors, (0), 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 02:22:54,643 INFO L175 Difference]: Start difference. First operand has 58 places, 77 transitions, 298 flow. Second operand 12 states and 4036 transitions. [2023-11-12 02:22:54,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 738 flow [2023-11-12 02:22:54,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 714 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:54,648 INFO L231 Difference]: Finished difference. Result has 73 places, 113 transitions, 698 flow [2023-11-12 02:22:54,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=698, PETRI_PLACES=73, PETRI_TRANSITIONS=113} [2023-11-12 02:22:54,650 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-11-12 02:22:54,650 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 113 transitions, 698 flow [2023-11-12 02:22:54,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 327.15384615384613) internal successors, (4253), 13 states have internal predecessors, (4253), 0 states have call successors, (0), 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 02:22:54,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:54,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:54,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:54,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:54,859 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:22:54,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash -820915793, now seen corresponding path program 1 times [2023-11-12 02:22:54,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:54,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917255702] [2023-11-12 02:22:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:54,964 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 02:22:54,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:54,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917255702] [2023-11-12 02:22:54,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917255702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:54,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:54,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:54,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793102027] [2023-11-12 02:22:54,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:54,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:54,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:54,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 725 [2023-11-12 02:22:54,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 113 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 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 02:22:54,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:54,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 725 [2023-11-12 02:22:54,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:56,369 INFO L124 PetriNetUnfolderBase]: 7425/10203 cut-off events. [2023-11-12 02:22:56,370 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-12 02:22:56,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20698 conditions, 10203 events. 7425/10203 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 51313 event pairs, 4037 based on Foata normal form. 0/5181 useless extension candidates. Maximal degree in co-relation 20580. Up to 7955 conditions per place. [2023-11-12 02:22:56,448 INFO L140 encePairwiseOnDemand]: 719/725 looper letters, 139 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2023-11-12 02:22:56,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 144 transitions, 1049 flow [2023-11-12 02:22:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:56,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:56,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1099 transitions. [2023-11-12 02:22:56,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052873563218391 [2023-11-12 02:22:56,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1099 transitions. [2023-11-12 02:22:56,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1099 transitions. [2023-11-12 02:22:56,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:56,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1099 transitions. [2023-11-12 02:22:56,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.3333333333333) internal successors, (1099), 3 states have internal predecessors, (1099), 0 states have call successors, (0), 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 02:22:56,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 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 02:22:56,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 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 02:22:56,483 INFO L175 Difference]: Start difference. First operand has 73 places, 113 transitions, 698 flow. Second operand 3 states and 1099 transitions. [2023-11-12 02:22:56,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 144 transitions, 1049 flow [2023-11-12 02:22:56,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 144 transitions, 871 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-12 02:22:56,494 INFO L231 Difference]: Finished difference. Result has 71 places, 116 transitions, 548 flow [2023-11-12 02:22:56,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=71, PETRI_TRANSITIONS=116} [2023-11-12 02:22:56,497 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2023-11-12 02:22:56,497 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 116 transitions, 548 flow [2023-11-12 02:22:56,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 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 02:22:56,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:56,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:56,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:22:56,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:22:56,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:56,499 INFO L85 PathProgramCache]: Analyzing trace with hash -820915738, now seen corresponding path program 1 times [2023-11-12 02:22:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:56,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694518695] [2023-11-12 02:22:56,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:56,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:56,640 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 02:22:56,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:56,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694518695] [2023-11-12 02:22:56,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694518695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:56,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:56,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:22:56,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967352299] [2023-11-12 02:22:56,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:56,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:22:56,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:56,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:22:56,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:56,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 725 [2023-11-12 02:22:56,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 116 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 318.6) internal successors, (1593), 5 states have internal predecessors, (1593), 0 states have call successors, (0), 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 02:22:56,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:56,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 725 [2023-11-12 02:22:56,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:59,073 INFO L124 PetriNetUnfolderBase]: 14035/18724 cut-off events. [2023-11-12 02:22:59,073 INFO L125 PetriNetUnfolderBase]: For 3410/3410 co-relation queries the response was YES. [2023-11-12 02:22:59,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42460 conditions, 18724 events. 14035/18724 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 92267 event pairs, 9646 based on Foata normal form. 0/11118 useless extension candidates. Maximal degree in co-relation 42331. Up to 9412 conditions per place. [2023-11-12 02:22:59,237 INFO L140 encePairwiseOnDemand]: 717/725 looper letters, 166 selfloop transitions, 17 changer transitions 0/184 dead transitions. [2023-11-12 02:22:59,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 184 transitions, 1175 flow [2023-11-12 02:22:59,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:22:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:22:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2004 transitions. [2023-11-12 02:22:59,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606896551724138 [2023-11-12 02:22:59,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2004 transitions. [2023-11-12 02:22:59,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2004 transitions. [2023-11-12 02:22:59,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:59,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2004 transitions. [2023-11-12 02:22:59,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 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 02:22:59,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 725.0) internal successors, (5075), 7 states have internal predecessors, (5075), 0 states have call successors, (0), 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 02:22:59,269 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 725.0) internal successors, (5075), 7 states have internal predecessors, (5075), 0 states have call successors, (0), 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 02:22:59,270 INFO L175 Difference]: Start difference. First operand has 71 places, 116 transitions, 548 flow. Second operand 6 states and 2004 transitions. [2023-11-12 02:22:59,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 184 transitions, 1175 flow [2023-11-12 02:22:59,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 184 transitions, 1167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:59,281 INFO L231 Difference]: Finished difference. Result has 78 places, 119 transitions, 619 flow [2023-11-12 02:22:59,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=78, PETRI_TRANSITIONS=119} [2023-11-12 02:22:59,283 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-11-12 02:22:59,283 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 119 transitions, 619 flow [2023-11-12 02:22:59,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 318.6) internal successors, (1593), 5 states have internal predecessors, (1593), 0 states have call successors, (0), 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 02:22:59,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:59,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:59,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:22:59,284 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:22:59,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash 221544567, now seen corresponding path program 1 times [2023-11-12 02:22:59,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:59,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974911567] [2023-11-12 02:22:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:59,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:59,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974911567] [2023-11-12 02:22:59,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974911567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:59,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255170702] [2023-11-12 02:22:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:59,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:59,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:59,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:59,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:22:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:59,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:22:59,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:59,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:59,760 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 02:22:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255170702] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:59,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:22:59,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2023-11-12 02:22:59,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114214357] [2023-11-12 02:22:59,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:59,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:22:59,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:59,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:22:59,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:22:59,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 725 [2023-11-12 02:22:59,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 119 transitions, 619 flow. Second operand has 5 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 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 02:22:59,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:59,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 725 [2023-11-12 02:22:59,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:02,205 INFO L124 PetriNetUnfolderBase]: 13835/18524 cut-off events. [2023-11-12 02:23:02,205 INFO L125 PetriNetUnfolderBase]: For 3589/3589 co-relation queries the response was YES. [2023-11-12 02:23:02,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41360 conditions, 18524 events. 13835/18524 cut-off events. For 3589/3589 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 92249 event pairs, 8988 based on Foata normal form. 200/11653 useless extension candidates. Maximal degree in co-relation 41224. Up to 10368 conditions per place. [2023-11-12 02:23:02,338 INFO L140 encePairwiseOnDemand]: 719/725 looper letters, 167 selfloop transitions, 15 changer transitions 0/183 dead transitions. [2023-11-12 02:23:02,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 183 transitions, 1221 flow [2023-11-12 02:23:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:23:02,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:23:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1649 transitions. [2023-11-12 02:23:02,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45489655172413795 [2023-11-12 02:23:02,346 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1649 transitions. [2023-11-12 02:23:02,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1649 transitions. [2023-11-12 02:23:02,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:02,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1649 transitions. [2023-11-12 02:23:02,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 329.8) internal successors, (1649), 5 states have internal predecessors, (1649), 0 states have call successors, (0), 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 02:23:02,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 725.0) internal successors, (4350), 6 states have internal predecessors, (4350), 0 states have call successors, (0), 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 02:23:02,361 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 725.0) internal successors, (4350), 6 states have internal predecessors, (4350), 0 states have call successors, (0), 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 02:23:02,361 INFO L175 Difference]: Start difference. First operand has 78 places, 119 transitions, 619 flow. Second operand 5 states and 1649 transitions. [2023-11-12 02:23:02,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 183 transitions, 1221 flow [2023-11-12 02:23:02,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 183 transitions, 1201 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-12 02:23:02,371 INFO L231 Difference]: Finished difference. Result has 82 places, 119 transitions, 645 flow [2023-11-12 02:23:02,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=645, PETRI_PLACES=82, PETRI_TRANSITIONS=119} [2023-11-12 02:23:02,372 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-11-12 02:23:02,372 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 119 transitions, 645 flow [2023-11-12 02:23:02,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 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 02:23:02,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:02,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:02,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-12 02:23:02,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:02,584 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:23:02,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash -820915674, now seen corresponding path program 1 times [2023-11-12 02:23:02,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:02,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726899918] [2023-11-12 02:23:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:02,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:02,687 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 02:23:02,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:02,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726899918] [2023-11-12 02:23:02,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726899918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:02,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:02,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:23:02,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462769690] [2023-11-12 02:23:02,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:02,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:02,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:02,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:02,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 725 [2023-11-12 02:23:02,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 119 transitions, 645 flow. Second operand has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 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 02:23:02,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:02,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 725 [2023-11-12 02:23:02,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:07,164 INFO L124 PetriNetUnfolderBase]: 26888/35899 cut-off events. [2023-11-12 02:23:07,164 INFO L125 PetriNetUnfolderBase]: For 8342/8342 co-relation queries the response was YES. [2023-11-12 02:23:07,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81974 conditions, 35899 events. 26888/35899 cut-off events. For 8342/8342 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 192261 event pairs, 18484 based on Foata normal form. 156/23509 useless extension candidates. Maximal degree in co-relation 81737. Up to 18005 conditions per place. [2023-11-12 02:23:07,392 INFO L140 encePairwiseOnDemand]: 717/725 looper letters, 205 selfloop transitions, 7 changer transitions 0/213 dead transitions. [2023-11-12 02:23:07,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 213 transitions, 1514 flow [2023-11-12 02:23:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:23:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:23:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1707 transitions. [2023-11-12 02:23:07,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708965517241379 [2023-11-12 02:23:07,399 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1707 transitions. [2023-11-12 02:23:07,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1707 transitions. [2023-11-12 02:23:07,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:07,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1707 transitions. [2023-11-12 02:23:07,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 341.4) internal successors, (1707), 5 states have internal predecessors, (1707), 0 states have call successors, (0), 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 02:23:07,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 725.0) internal successors, (4350), 6 states have internal predecessors, (4350), 0 states have call successors, (0), 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 02:23:07,415 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 725.0) internal successors, (4350), 6 states have internal predecessors, (4350), 0 states have call successors, (0), 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 02:23:07,415 INFO L175 Difference]: Start difference. First operand has 82 places, 119 transitions, 645 flow. Second operand 5 states and 1707 transitions. [2023-11-12 02:23:07,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 213 transitions, 1514 flow [2023-11-12 02:23:07,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 213 transitions, 1498 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:23:07,429 INFO L231 Difference]: Finished difference. Result has 87 places, 123 transitions, 695 flow [2023-11-12 02:23:07,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=695, PETRI_PLACES=87, PETRI_TRANSITIONS=123} [2023-11-12 02:23:07,430 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2023-11-12 02:23:07,430 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 123 transitions, 695 flow [2023-11-12 02:23:07,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 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 02:23:07,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:07,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:07,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:23:07,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:23:07,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash 221544503, now seen corresponding path program 1 times [2023-11-12 02:23:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:07,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509313051] [2023-11-12 02:23:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:07,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:07,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:07,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509313051] [2023-11-12 02:23:07,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509313051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:23:07,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864224032] [2023-11-12 02:23:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:07,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:07,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:07,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:23:07,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:23:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:07,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:23:07,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:23:07,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864224032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:07,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:23:07,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-12 02:23:07,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5866584] [2023-11-12 02:23:07,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:07,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:23:07,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:07,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:23:07,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:23:07,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 725 [2023-11-12 02:23:07,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 123 transitions, 695 flow. Second operand has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 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 02:23:07,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:07,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 725 [2023-11-12 02:23:07,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:11,877 INFO L124 PetriNetUnfolderBase]: 23040/30787 cut-off events. [2023-11-12 02:23:11,877 INFO L125 PetriNetUnfolderBase]: For 8732/8732 co-relation queries the response was YES. [2023-11-12 02:23:11,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69077 conditions, 30787 events. 23040/30787 cut-off events. For 8732/8732 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 161889 event pairs, 15640 based on Foata normal form. 1398/20695 useless extension candidates. Maximal degree in co-relation 68840. Up to 30723 conditions per place. [2023-11-12 02:23:12,096 INFO L140 encePairwiseOnDemand]: 722/725 looper letters, 117 selfloop transitions, 1 changer transitions 0/119 dead transitions. [2023-11-12 02:23:12,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 907 flow [2023-11-12 02:23:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:23:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:23:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1066 transitions. [2023-11-12 02:23:12,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901149425287356 [2023-11-12 02:23:12,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1066 transitions. [2023-11-12 02:23:12,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1066 transitions. [2023-11-12 02:23:12,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:12,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1066 transitions. [2023-11-12 02:23:12,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.3333333333333) internal successors, (1066), 3 states have internal predecessors, (1066), 0 states have call successors, (0), 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 02:23:12,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 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 02:23:12,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 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 02:23:12,113 INFO L175 Difference]: Start difference. First operand has 87 places, 123 transitions, 695 flow. Second operand 3 states and 1066 transitions. [2023-11-12 02:23:12,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 907 flow [2023-11-12 02:23:12,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 865 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-12 02:23:12,124 INFO L231 Difference]: Finished difference. Result has 81 places, 119 transitions, 631 flow [2023-11-12 02:23:12,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=81, PETRI_TRANSITIONS=119} [2023-11-12 02:23:12,125 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2023-11-12 02:23:12,125 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 119 transitions, 631 flow [2023-11-12 02:23:12,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 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 02:23:12,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:12,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:12,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:12,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:12,334 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:23:12,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:12,335 INFO L85 PathProgramCache]: Analyzing trace with hash -3584548, now seen corresponding path program 1 times [2023-11-12 02:23:12,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:12,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682548268] [2023-11-12 02:23:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:12,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:12,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:12,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682548268] [2023-11-12 02:23:12,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682548268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:23:12,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635156042] [2023-11-12 02:23:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:12,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:12,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:12,473 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:23:12,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6546fa6-6194-47e4-9b07-88afc3eda689/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:23:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:12,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:23:12,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:23:12,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635156042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:12,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:23:12,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 02:23:12,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163941480] [2023-11-12 02:23:12,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:12,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:12,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:12,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:12,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:23:12,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 725 [2023-11-12 02:23:12,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 119 transitions, 631 flow. Second operand has 4 states, 4 states have (on average 338.25) internal successors, (1353), 4 states have internal predecessors, (1353), 0 states have call successors, (0), 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 02:23:12,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:12,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 725 [2023-11-12 02:23:12,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand