./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:00:57,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:00:57,294 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:00:57,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:00:57,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:00:57,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:00:57,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:00:57,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:00:57,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:00:57,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:00:57,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:00:57,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:00:57,366 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:00:57,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:00:57,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:00:57,369 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:00:57,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:00:57,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:00:57,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:00:57,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:00:57,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:00:57,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:00:57,373 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:00:57,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:00:57,374 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:00:57,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:00:57,375 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:00:57,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:00:57,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:00:57,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:00:57,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:57,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:00:57,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:00:57,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:00:57,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:00:57,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:00:57,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:00:57,380 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:00:57,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:00:57,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:00:57,381 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:00:57,382 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_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2023-11-06 23:00:57,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:00:57,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:00:57,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:00:57,770 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:00:57,770 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:00:57,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2023-11-06 23:01:00,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:01:01,158 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:01:01,159 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2023-11-06 23:01:01,169 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/data/04be4aa91/0fc116b66d234702b3ca99ef433e06b3/FLAGd3e839e79 [2023-11-06 23:01:01,184 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/data/04be4aa91/0fc116b66d234702b3ca99ef433e06b3 [2023-11-06 23:01:01,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:01:01,188 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:01:01,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:01,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:01:01,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:01:01,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20165f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01, skipping insertion in model container [2023-11-06 23:01:01,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,227 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:01:01,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:01:01,470 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:01:01,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:01:01,539 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:01:01,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01 WrapperNode [2023-11-06 23:01:01,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:01,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:01:01,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:01:01,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:01:01,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,628 INFO L138 Inliner]: procedures = 27, calls = 67, calls flagged for inlining = 23, calls inlined = 35, statements flattened = 504 [2023-11-06 23:01:01,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:01:01,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:01:01,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:01:01,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:01:01,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,694 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:01:01,721 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:01:01,721 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:01:01,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:01:01,722 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (1/1) ... [2023-11-06 23:01:01,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:01:01,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:01,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:01:01,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:01:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:01:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:01:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:01:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:01:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:01:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:01:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:01:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:01:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:01:01,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:01:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:01:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:01:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:01:01,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:01:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:01:01,817 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:01:02,024 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:01:02,026 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:01:02,988 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:01:03,012 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:01:03,012 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 23:01:03,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:03 BoogieIcfgContainer [2023-11-06 23:01:03,016 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:01:03,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:01:03,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:01:03,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:01:03,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:01:01" (1/3) ... [2023-11-06 23:01:03,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee8edfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:01:03, skipping insertion in model container [2023-11-06 23:01:03,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:01" (2/3) ... [2023-11-06 23:01:03,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee8edfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:01:03, skipping insertion in model container [2023-11-06 23:01:03,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:03" (3/3) ... [2023-11-06 23:01:03,029 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-11-06 23:01:03,039 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:01:03,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:01:03,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-06 23:01:03,051 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:01:03,217 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 23:01:03,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 643 places, 680 transitions, 1381 flow [2023-11-06 23:01:03,627 INFO L124 PetriNetUnfolderBase]: 47/677 cut-off events. [2023-11-06 23:01:03,627 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:01:03,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 677 events. 47/677 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1093 event pairs, 0 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 571. Up to 2 conditions per place. [2023-11-06 23:01:03,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 643 places, 680 transitions, 1381 flow [2023-11-06 23:01:03,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 617 places, 653 transitions, 1321 flow [2023-11-06 23:01:03,657 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:01:03,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 617 places, 653 transitions, 1321 flow [2023-11-06 23:01:03,670 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 617 places, 653 transitions, 1321 flow [2023-11-06 23:01:03,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 617 places, 653 transitions, 1321 flow [2023-11-06 23:01:03,917 INFO L124 PetriNetUnfolderBase]: 46/653 cut-off events. [2023-11-06 23:01:03,917 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:01:03,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 653 events. 46/653 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1093 event pairs, 0 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 571. Up to 2 conditions per place. [2023-11-06 23:01:03,956 INFO L119 LiptonReduction]: Number of co-enabled transitions 40128 [2023-11-06 23:01:41,494 INFO L134 LiptonReduction]: Checked pairs total: 48746 [2023-11-06 23:01:41,494 INFO L136 LiptonReduction]: Total number of compositions: 838 [2023-11-06 23:01:41,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:01:41,517 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@69b10fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:01:41,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-11-06 23:01:41,519 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:01:41,520 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 23:01:41,520 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:01:41,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:41,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 23:01:41,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:41,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:41,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2657, now seen corresponding path program 1 times [2023-11-06 23:01:41,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:41,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584317615] [2023-11-06 23:01:41,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:41,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:41,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:41,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584317615] [2023-11-06 23:01:41,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584317615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:41,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:41,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 23:01:41,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320589657] [2023-11-06 23:01:41,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:41,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:01:41,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:41,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:01:41,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:01:41,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1518 [2023-11-06 23:01:41,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 179 flow. Second operand has 2 states, 2 states have (on average 644.5) internal successors, (1289), 2 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:41,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:41,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1518 [2023-11-06 23:01:41,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:43,160 INFO L124 PetriNetUnfolderBase]: 4475/6364 cut-off events. [2023-11-06 23:01:43,160 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2023-11-06 23:01:43,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13071 conditions, 6364 events. 4475/6364 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30398 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12104. Up to 6365 conditions per place. [2023-11-06 23:01:43,213 INFO L140 encePairwiseOnDemand]: 1510/1518 looper letters, 74 selfloop transitions, 0 changer transitions 0/74 dead transitions. [2023-11-06 23:01:43,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 74 transitions, 311 flow [2023-11-06 23:01:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:01:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:01:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1370 transitions. [2023-11-06 23:01:43,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512516469038208 [2023-11-06 23:01:43,235 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1370 transitions. [2023-11-06 23:01:43,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1370 transitions. [2023-11-06 23:01:43,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:43,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1370 transitions. [2023-11-06 23:01:43,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 685.0) internal successors, (1370), 2 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1518.0) internal successors, (4554), 3 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,271 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1518.0) internal successors, (4554), 3 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,273 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 179 flow. Second operand 2 states and 1370 transitions. [2023-11-06 23:01:43,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 74 transitions, 311 flow [2023-11-06 23:01:43,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 302 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:01:43,295 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 154 flow [2023-11-06 23:01:43,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=154, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2023-11-06 23:01:43,302 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-11-06 23:01:43,302 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 154 flow [2023-11-06 23:01:43,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 644.5) internal successors, (1289), 2 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:43,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:01:43,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:01:43,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:43,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:43,306 INFO L85 PathProgramCache]: Analyzing trace with hash 85108, now seen corresponding path program 1 times [2023-11-06 23:01:43,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:43,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595543045] [2023-11-06 23:01:43,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:43,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:43,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:43,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595543045] [2023-11-06 23:01:43,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595543045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:43,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:43,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:01:43,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195454604] [2023-11-06 23:01:43,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:43,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:43,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:43,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:43,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:43,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 23:01:43,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 629.6666666666666) internal successors, (1889), 3 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:43,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 23:01:43,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:45,077 INFO L124 PetriNetUnfolderBase]: 4484/6376 cut-off events. [2023-11-06 23:01:45,078 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 23:01:45,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13009 conditions, 6376 events. 4484/6376 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30444 event pairs, 3825 based on Foata normal form. 0/3343 useless extension candidates. Maximal degree in co-relation 13006. Up to 6372 conditions per place. [2023-11-06 23:01:45,129 INFO L140 encePairwiseOnDemand]: 1499/1518 looper letters, 73 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2023-11-06 23:01:45,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 350 flow [2023-11-06 23:01:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1979 transitions. [2023-11-06 23:01:45,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43456302151954324 [2023-11-06 23:01:45,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1979 transitions. [2023-11-06 23:01:45,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1979 transitions. [2023-11-06 23:01:45,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:45,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1979 transitions. [2023-11-06 23:01:45,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 659.6666666666666) internal successors, (1979), 3 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,166 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 154 flow. Second operand 3 states and 1979 transitions. [2023-11-06 23:01:45,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 350 flow [2023-11-06 23:01:45,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:01:45,170 INFO L231 Difference]: Finished difference. Result has 74 places, 86 transitions, 266 flow [2023-11-06 23:01:45,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=74, PETRI_TRANSITIONS=86} [2023-11-06 23:01:45,171 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-11-06 23:01:45,171 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 86 transitions, 266 flow [2023-11-06 23:01:45,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 629.6666666666666) internal successors, (1889), 3 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:45,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:01:45,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:01:45,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:45,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:45,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2640864, now seen corresponding path program 1 times [2023-11-06 23:01:45,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:45,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878948293] [2023-11-06 23:01:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:45,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:01:45,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:45,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878948293] [2023-11-06 23:01:45,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878948293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:45,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:45,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:01:45,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616270200] [2023-11-06 23:01:45,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:45,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:45,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:45,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:45,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:45,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1518 [2023-11-06 23:01:45,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 639.0) internal successors, (1917), 3 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:45,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1518 [2023-11-06 23:01:45,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:46,746 INFO L124 PetriNetUnfolderBase]: 4483/6373 cut-off events. [2023-11-06 23:01:46,747 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 23:01:46,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13046 conditions, 6373 events. 4483/6373 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30420 event pairs, 3825 based on Foata normal form. 0/3347 useless extension candidates. Maximal degree in co-relation 13041. Up to 6373 conditions per place. [2023-11-06 23:01:46,801 INFO L140 encePairwiseOnDemand]: 1515/1518 looper letters, 82 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2023-11-06 23:01:46,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 420 flow [2023-11-06 23:01:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1988 transitions. [2023-11-06 23:01:46,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365393061045235 [2023-11-06 23:01:46,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1988 transitions. [2023-11-06 23:01:46,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1988 transitions. [2023-11-06 23:01:46,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:46,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1988 transitions. [2023-11-06 23:01:46,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 662.6666666666666) internal successors, (1988), 3 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:46,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:46,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:46,841 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 266 flow. Second operand 3 states and 1988 transitions. [2023-11-06 23:01:46,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 420 flow [2023-11-06 23:01:46,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:01:46,847 INFO L231 Difference]: Finished difference. Result has 72 places, 83 transitions, 232 flow [2023-11-06 23:01:46,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=72, PETRI_TRANSITIONS=83} [2023-11-06 23:01:46,849 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2023-11-06 23:01:46,849 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 83 transitions, 232 flow [2023-11-06 23:01:46,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 639.0) internal successors, (1917), 3 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:46,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:46,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:01:46,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:01:46,856 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:46,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2640865, now seen corresponding path program 1 times [2023-11-06 23:01:46,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:46,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196908765] [2023-11-06 23:01:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:46,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:01:46,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:46,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196908765] [2023-11-06 23:01:46,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196908765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:46,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:46,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:01:46,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958458559] [2023-11-06 23:01:46,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:46,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:46,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:46,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:46,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:47,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 1518 [2023-11-06 23:01:47,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 83 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:47,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:47,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 1518 [2023-11-06 23:01:47,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:48,150 INFO L124 PetriNetUnfolderBase]: 4482/6370 cut-off events. [2023-11-06 23:01:48,150 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 23:01:48,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13027 conditions, 6370 events. 4482/6370 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30395 event pairs, 3825 based on Foata normal form. 0/3343 useless extension candidates. Maximal degree in co-relation 13022. Up to 6370 conditions per place. [2023-11-06 23:01:48,198 INFO L140 encePairwiseOnDemand]: 1515/1518 looper letters, 79 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-11-06 23:01:48,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 80 transitions, 382 flow [2023-11-06 23:01:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:48,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1980 transitions. [2023-11-06 23:01:48,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2023-11-06 23:01:48,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1980 transitions. [2023-11-06 23:01:48,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1980 transitions. [2023-11-06 23:01:48,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:48,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1980 transitions. [2023-11-06 23:01:48,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 660.0) internal successors, (1980), 3 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:48,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:48,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:48,238 INFO L175 Difference]: Start difference. First operand has 72 places, 83 transitions, 232 flow. Second operand 3 states and 1980 transitions. [2023-11-06 23:01:48,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 80 transitions, 382 flow [2023-11-06 23:01:48,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:48,242 INFO L231 Difference]: Finished difference. Result has 71 places, 80 transitions, 223 flow [2023-11-06 23:01:48,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=71, PETRI_TRANSITIONS=80} [2023-11-06 23:01:48,244 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2023-11-06 23:01:48,244 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 80 transitions, 223 flow [2023-11-06 23:01:48,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:48,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:48,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:01:48,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:01:48,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:48,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2640903, now seen corresponding path program 1 times [2023-11-06 23:01:48,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:48,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624434594] [2023-11-06 23:01:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:48,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:48,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624434594] [2023-11-06 23:01:48,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624434594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:48,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:48,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:01:48,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794873732] [2023-11-06 23:01:48,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:48,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:48,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:48,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:48,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:48,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 23:01:48,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 80 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 630.0) internal successors, (1890), 3 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:48,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:48,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 23:01:48,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:49,290 INFO L124 PetriNetUnfolderBase]: 4482/6367 cut-off events. [2023-11-06 23:01:49,290 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 23:01:49,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13019 conditions, 6367 events. 4482/6367 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30394 event pairs, 3825 based on Foata normal form. 0/3343 useless extension candidates. Maximal degree in co-relation 13014. Up to 6354 conditions per place. [2023-11-06 23:01:49,327 INFO L140 encePairwiseOnDemand]: 1509/1518 looper letters, 66 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2023-11-06 23:01:49,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 365 flow [2023-11-06 23:01:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1957 transitions. [2023-11-06 23:01:49,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42973210364514713 [2023-11-06 23:01:49,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1957 transitions. [2023-11-06 23:01:49,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1957 transitions. [2023-11-06 23:01:49,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:49,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1957 transitions. [2023-11-06 23:01:49,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 652.3333333333334) internal successors, (1957), 3 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:49,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:49,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:49,355 INFO L175 Difference]: Start difference. First operand has 71 places, 80 transitions, 223 flow. Second operand 3 states and 1957 transitions. [2023-11-06 23:01:49,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 365 flow [2023-11-06 23:01:49,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:49,358 INFO L231 Difference]: Finished difference. Result has 69 places, 77 transitions, 232 flow [2023-11-06 23:01:49,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=69, PETRI_TRANSITIONS=77} [2023-11-06 23:01:49,359 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-11-06 23:01:49,359 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 77 transitions, 232 flow [2023-11-06 23:01:49,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 630.0) internal successors, (1890), 3 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:49,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:49,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:01:49,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:01:49,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:49,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2640904, now seen corresponding path program 1 times [2023-11-06 23:01:49,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:49,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196481732] [2023-11-06 23:01:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:49,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:49,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196481732] [2023-11-06 23:01:49,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196481732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:01:49,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957796977] [2023-11-06 23:01:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:49,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:49,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:49,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:01:49,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:01:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:49,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:01:49,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:01:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:49,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:01:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:49,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957796977] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:01:49,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:01:49,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 23:01:49,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209958273] [2023-11-06 23:01:49,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:01:49,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:01:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:49,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:01:49,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:01:49,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 23:01:49,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 77 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 630.1428571428571) internal successors, (4411), 7 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:49,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:49,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 23:01:49,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:51,170 INFO L124 PetriNetUnfolderBase]: 4503/6397 cut-off events. [2023-11-06 23:01:51,170 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 23:01:51,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13135 conditions, 6397 events. 4503/6397 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30479 event pairs, 3825 based on Foata normal form. 0/3362 useless extension candidates. Maximal degree in co-relation 13130. Up to 6378 conditions per place. [2023-11-06 23:01:51,218 INFO L140 encePairwiseOnDemand]: 1504/1518 looper letters, 66 selfloop transitions, 41 changer transitions 0/107 dead transitions. [2023-11-06 23:01:51,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 107 transitions, 596 flow [2023-11-06 23:01:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:01:51,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:01:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3890 transitions. [2023-11-06 23:01:51,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42709705753184013 [2023-11-06 23:01:51,237 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3890 transitions. [2023-11-06 23:01:51,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3890 transitions. [2023-11-06 23:01:51,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:51,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3890 transitions. [2023-11-06 23:01:51,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 648.3333333333334) internal successors, (3890), 6 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:51,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1518.0) internal successors, (10626), 7 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:51,279 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1518.0) internal successors, (10626), 7 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:51,279 INFO L175 Difference]: Start difference. First operand has 69 places, 77 transitions, 232 flow. Second operand 6 states and 3890 transitions. [2023-11-06 23:01:51,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 107 transitions, 596 flow [2023-11-06 23:01:51,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 107 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:01:51,286 INFO L231 Difference]: Finished difference. Result has 75 places, 107 transitions, 485 flow [2023-11-06 23:01:51,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=75, PETRI_TRANSITIONS=107} [2023-11-06 23:01:51,290 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-11-06 23:01:51,290 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 107 transitions, 485 flow [2023-11-06 23:01:51,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 630.1428571428571) internal successors, (4411), 7 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:51,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:51,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:01:51,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 23:01:51,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 23:01:51,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:51,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:51,499 INFO L85 PathProgramCache]: Analyzing trace with hash 81992857, now seen corresponding path program 1 times [2023-11-06 23:01:51,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:51,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107468793] [2023-11-06 23:01:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:51,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:01:51,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:51,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107468793] [2023-11-06 23:01:51,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107468793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:51,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:51,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:01:51,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299418987] [2023-11-06 23:01:51,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:51,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:51,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:51,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:51,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:51,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1518 [2023-11-06 23:01:51,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 107 transitions, 485 flow. Second operand has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:51,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:51,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1518 [2023-11-06 23:01:51,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:52,751 INFO L124 PetriNetUnfolderBase]: 4499/6391 cut-off events. [2023-11-06 23:01:52,752 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 23:01:52,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13175 conditions, 6391 events. 4499/6391 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 30318 event pairs, 3825 based on Foata normal form. 0/3365 useless extension candidates. Maximal degree in co-relation 13167. Up to 6391 conditions per place. [2023-11-06 23:01:52,786 INFO L140 encePairwiseOnDemand]: 1515/1518 looper letters, 100 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2023-11-06 23:01:52,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 652 flow [2023-11-06 23:01:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:52,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1981 transitions. [2023-11-06 23:01:52,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350021958717611 [2023-11-06 23:01:52,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1981 transitions. [2023-11-06 23:01:52,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1981 transitions. [2023-11-06 23:01:52,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:52,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1981 transitions. [2023-11-06 23:01:52,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:52,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:52,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:52,814 INFO L175 Difference]: Start difference. First operand has 75 places, 107 transitions, 485 flow. Second operand 3 states and 1981 transitions. [2023-11-06 23:01:52,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 652 flow [2023-11-06 23:01:52,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 101 transitions, 594 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:52,819 INFO L231 Difference]: Finished difference. Result has 74 places, 101 transitions, 394 flow [2023-11-06 23:01:52,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=74, PETRI_TRANSITIONS=101} [2023-11-06 23:01:52,820 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-11-06 23:01:52,820 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 101 transitions, 394 flow [2023-11-06 23:01:52,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:52,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:52,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:01:52,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:01:52,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:52,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:52,822 INFO L85 PathProgramCache]: Analyzing trace with hash 81992858, now seen corresponding path program 1 times [2023-11-06 23:01:52,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:52,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492945842] [2023-11-06 23:01:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:52,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:01:52,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:52,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492945842] [2023-11-06 23:01:52,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492945842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:52,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:52,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:01:52,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147048616] [2023-11-06 23:01:52,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:52,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:52,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:52,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 1518 [2023-11-06 23:01:52,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 101 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:52,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:52,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 1518 [2023-11-06 23:01:52,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:53,808 INFO L124 PetriNetUnfolderBase]: 4495/6385 cut-off events. [2023-11-06 23:01:53,809 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 23:01:53,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13125 conditions, 6385 events. 4495/6385 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 30297 event pairs, 3825 based on Foata normal form. 2/3368 useless extension candidates. Maximal degree in co-relation 13116. Up to 6385 conditions per place. [2023-11-06 23:01:53,840 INFO L140 encePairwiseOnDemand]: 1515/1518 looper letters, 94 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2023-11-06 23:01:53,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 95 transitions, 556 flow [2023-11-06 23:01:53,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:53,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1973 transitions. [2023-11-06 23:01:53,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332454984628898 [2023-11-06 23:01:53,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1973 transitions. [2023-11-06 23:01:53,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1973 transitions. [2023-11-06 23:01:53,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:53,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1973 transitions. [2023-11-06 23:01:53,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 657.6666666666666) internal successors, (1973), 3 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:53,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:53,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:53,867 INFO L175 Difference]: Start difference. First operand has 74 places, 101 transitions, 394 flow. Second operand 3 states and 1973 transitions. [2023-11-06 23:01:53,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 95 transitions, 556 flow [2023-11-06 23:01:53,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 95 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:53,871 INFO L231 Difference]: Finished difference. Result has 73 places, 95 transitions, 367 flow [2023-11-06 23:01:53,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=73, PETRI_TRANSITIONS=95} [2023-11-06 23:01:53,872 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-11-06 23:01:53,872 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 95 transitions, 367 flow [2023-11-06 23:01:53,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:53,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:53,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:01:53,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:01:53,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:53,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash 81996406, now seen corresponding path program 1 times [2023-11-06 23:01:53,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:53,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515545623] [2023-11-06 23:01:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:53,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:53,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:53,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515545623] [2023-11-06 23:01:53,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515545623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:53,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:53,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:01:53,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939542355] [2023-11-06 23:01:53,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:53,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:53,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:53,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:53,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1518 [2023-11-06 23:01:53,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 95 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:53,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:53,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1518 [2023-11-06 23:01:53,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:54,852 INFO L124 PetriNetUnfolderBase]: 4491/6380 cut-off events. [2023-11-06 23:01:54,852 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 23:01:54,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13106 conditions, 6380 events. 4491/6380 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 30264 event pairs, 3825 based on Foata normal form. 0/3366 useless extension candidates. Maximal degree in co-relation 13097. Up to 6380 conditions per place. [2023-11-06 23:01:54,898 INFO L140 encePairwiseOnDemand]: 1516/1518 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-11-06 23:01:54,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 521 flow [2023-11-06 23:01:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1977 transitions. [2023-11-06 23:01:54,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43412384716732544 [2023-11-06 23:01:54,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1977 transitions. [2023-11-06 23:01:54,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1977 transitions. [2023-11-06 23:01:54,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:54,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1977 transitions. [2023-11-06 23:01:54,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 659.0) internal successors, (1977), 3 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:54,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:54,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:54,925 INFO L175 Difference]: Start difference. First operand has 73 places, 95 transitions, 367 flow. Second operand 3 states and 1977 transitions. [2023-11-06 23:01:54,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 521 flow [2023-11-06 23:01:54,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:54,929 INFO L231 Difference]: Finished difference. Result has 73 places, 90 transitions, 342 flow [2023-11-06 23:01:54,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=73, PETRI_TRANSITIONS=90} [2023-11-06 23:01:54,930 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-11-06 23:01:54,930 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 90 transitions, 342 flow [2023-11-06 23:01:54,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:54,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:54,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:01:54,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:01:54,932 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:54,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:54,932 INFO L85 PathProgramCache]: Analyzing trace with hash 81996404, now seen corresponding path program 1 times [2023-11-06 23:01:54,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:54,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130749355] [2023-11-06 23:01:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:54,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:55,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130749355] [2023-11-06 23:01:55,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130749355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:55,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:55,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:01:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267682314] [2023-11-06 23:01:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:55,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:55,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 1518 [2023-11-06 23:01:55,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:55,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:55,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 1518 [2023-11-06 23:01:55,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:55,927 INFO L124 PetriNetUnfolderBase]: 4487/6375 cut-off events. [2023-11-06 23:01:55,927 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 23:01:55,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13087 conditions, 6375 events. 4487/6375 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 30328 event pairs, 3825 based on Foata normal form. 0/3366 useless extension candidates. Maximal degree in co-relation 13078. Up to 6375 conditions per place. [2023-11-06 23:01:55,967 INFO L140 encePairwiseOnDemand]: 1516/1518 looper letters, 84 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-11-06 23:01:55,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 85 transitions, 486 flow [2023-11-06 23:01:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1970 transitions. [2023-11-06 23:01:55,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432586736934563 [2023-11-06 23:01:55,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1970 transitions. [2023-11-06 23:01:55,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1970 transitions. [2023-11-06 23:01:55,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:55,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1970 transitions. [2023-11-06 23:01:55,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 656.6666666666666) internal successors, (1970), 3 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:55,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:55,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:55,993 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 342 flow. Second operand 3 states and 1970 transitions. [2023-11-06 23:01:55,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 85 transitions, 486 flow [2023-11-06 23:01:55,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:55,996 INFO L231 Difference]: Finished difference. Result has 73 places, 85 transitions, 317 flow [2023-11-06 23:01:55,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=73, PETRI_TRANSITIONS=85} [2023-11-06 23:01:55,997 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-11-06 23:01:55,998 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 85 transitions, 317 flow [2023-11-06 23:01:55,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:55,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:55,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:01:55,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:01:55,999 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:55,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1753072329, now seen corresponding path program 1 times [2023-11-06 23:01:56,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:56,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182012898] [2023-11-06 23:01:56,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:56,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:56,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:56,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182012898] [2023-11-06 23:01:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182012898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:56,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:56,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:01:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953605547] [2023-11-06 23:01:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:56,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:56,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:56,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:56,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 23:01:56,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 85 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 630.6666666666666) internal successors, (1892), 3 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:56,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:56,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 23:01:56,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:57,168 INFO L124 PetriNetUnfolderBase]: 4490/6381 cut-off events. [2023-11-06 23:01:57,168 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 23:01:57,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13100 conditions, 6381 events. 4490/6381 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 30351 event pairs, 3825 based on Foata normal form. 0/3369 useless extension candidates. Maximal degree in co-relation 13091. Up to 6373 conditions per place. [2023-11-06 23:01:57,200 INFO L140 encePairwiseOnDemand]: 1505/1518 looper letters, 80 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2023-11-06 23:01:57,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 511 flow [2023-11-06 23:01:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1960 transitions. [2023-11-06 23:01:57,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43039086517347386 [2023-11-06 23:01:57,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1960 transitions. [2023-11-06 23:01:57,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1960 transitions. [2023-11-06 23:01:57,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:57,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1960 transitions. [2023-11-06 23:01:57,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 653.3333333333334) internal successors, (1960), 3 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:57,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:57,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:57,228 INFO L175 Difference]: Start difference. First operand has 73 places, 85 transitions, 317 flow. Second operand 3 states and 1960 transitions. [2023-11-06 23:01:57,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 511 flow [2023-11-06 23:01:57,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:57,232 INFO L231 Difference]: Finished difference. Result has 76 places, 91 transitions, 396 flow [2023-11-06 23:01:57,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=76, PETRI_TRANSITIONS=91} [2023-11-06 23:01:57,233 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -6 predicate places. [2023-11-06 23:01:57,234 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 91 transitions, 396 flow [2023-11-06 23:01:57,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 630.6666666666666) internal successors, (1892), 3 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:57,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:57,235 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 23:01:57,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:01:57,235 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:57,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:57,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1368267061, now seen corresponding path program 2 times [2023-11-06 23:01:57,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:57,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342928589] [2023-11-06 23:01:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:57,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:57,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:57,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342928589] [2023-11-06 23:01:57,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342928589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:01:57,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878510682] [2023-11-06 23:01:57,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:01:57,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:57,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:57,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:01:57,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:01:57,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:01:57,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:01:57,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:01:57,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:01:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:01:57,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:01:57,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878510682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:57,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:01:57,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 23:01:57,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637711591] [2023-11-06 23:01:57,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:57,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:57,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:57,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:57,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:01:57,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 635 out of 1518 [2023-11-06 23:01:57,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:57,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:57,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 635 of 1518 [2023-11-06 23:01:57,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:58,758 INFO L124 PetriNetUnfolderBase]: 4490/6378 cut-off events. [2023-11-06 23:01:58,758 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-06 23:01:58,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13117 conditions, 6378 events. 4490/6378 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30356 event pairs, 3825 based on Foata normal form. 3/3375 useless extension candidates. Maximal degree in co-relation 13107. Up to 6353 conditions per place. [2023-11-06 23:01:58,792 INFO L140 encePairwiseOnDemand]: 1513/1518 looper letters, 82 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2023-11-06 23:01:58,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 542 flow [2023-11-06 23:01:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1966 transitions. [2023-11-06 23:01:58,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43170838823012736 [2023-11-06 23:01:58,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1966 transitions. [2023-11-06 23:01:58,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1966 transitions. [2023-11-06 23:01:58,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:58,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1966 transitions. [2023-11-06 23:01:58,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 655.3333333333334) internal successors, (1966), 3 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:58,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:58,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:58,815 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 396 flow. Second operand 3 states and 1966 transitions. [2023-11-06 23:01:58,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 542 flow [2023-11-06 23:01:58,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 88 transitions, 472 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-06 23:01:58,819 INFO L231 Difference]: Finished difference. Result has 69 places, 88 transitions, 308 flow [2023-11-06 23:01:58,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=69, PETRI_TRANSITIONS=88} [2023-11-06 23:01:58,820 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-11-06 23:01:58,821 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 88 transitions, 308 flow [2023-11-06 23:01:58,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:58,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:58,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:01:58,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:01:59,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 23:01:59,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:01:59,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:59,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1489339030, now seen corresponding path program 1 times [2023-11-06 23:01:59,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:59,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037200288] [2023-11-06 23:01:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:59,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:59,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:59,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037200288] [2023-11-06 23:01:59,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037200288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:59,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:59,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:01:59,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065328087] [2023-11-06 23:01:59,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:59,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:59,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:59,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:59,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:59,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 23:01:59,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 88 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 631.0) internal successors, (1893), 3 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:59,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:59,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 23:01:59,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:00,085 INFO L124 PetriNetUnfolderBase]: 4490/6375 cut-off events. [2023-11-06 23:02:00,085 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 23:02:00,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13073 conditions, 6375 events. 4490/6375 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30346 event pairs, 3825 based on Foata normal form. 0/3360 useless extension candidates. Maximal degree in co-relation 13067. Up to 6358 conditions per place. [2023-11-06 23:02:00,114 INFO L140 encePairwiseOnDemand]: 1513/1518 looper letters, 78 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2023-11-06 23:02:00,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 466 flow [2023-11-06 23:02:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:02:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1945 transitions. [2023-11-06 23:02:00,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42709705753184013 [2023-11-06 23:02:00,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1945 transitions. [2023-11-06 23:02:00,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1945 transitions. [2023-11-06 23:02:00,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:00,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1945 transitions. [2023-11-06 23:02:00,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 648.3333333333334) internal successors, (1945), 3 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:00,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:00,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:00,137 INFO L175 Difference]: Start difference. First operand has 69 places, 88 transitions, 308 flow. Second operand 3 states and 1945 transitions. [2023-11-06 23:02:00,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 466 flow [2023-11-06 23:02:00,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:02:00,140 INFO L231 Difference]: Finished difference. Result has 66 places, 85 transitions, 298 flow [2023-11-06 23:02:00,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=66, PETRI_TRANSITIONS=85} [2023-11-06 23:02:00,141 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -16 predicate places. [2023-11-06 23:02:00,141 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 85 transitions, 298 flow [2023-11-06 23:02:00,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 631.0) internal successors, (1893), 3 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:00,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:00,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:02:00,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:02:00,142 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:02:00,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:00,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1489339065, now seen corresponding path program 1 times [2023-11-06 23:02:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:00,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462454320] [2023-11-06 23:02:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:00,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:00,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462454320] [2023-11-06 23:02:00,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462454320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:00,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190950576] [2023-11-06 23:02:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:00,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:00,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:00,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:00,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:02:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:00,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:02:00,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:02:00,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:02:00,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190950576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:00,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:02:00,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 23:02:00,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824465054] [2023-11-06 23:02:00,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:00,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:00,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:00,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:02:00,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 626 out of 1518 [2023-11-06 23:02:00,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 85 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 628.0) internal successors, (1884), 3 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:00,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:00,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 626 of 1518 [2023-11-06 23:02:00,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:01,425 INFO L124 PetriNetUnfolderBase]: 4489/6374 cut-off events. [2023-11-06 23:02:01,425 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 23:02:01,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13071 conditions, 6374 events. 4489/6374 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30345 event pairs, 3825 based on Foata normal form. 0/3362 useless extension candidates. Maximal degree in co-relation 13065. Up to 6374 conditions per place. [2023-11-06 23:02:01,480 INFO L140 encePairwiseOnDemand]: 1515/1518 looper letters, 82 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-06 23:02:01,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 462 flow [2023-11-06 23:02:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:01,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:02:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1935 transitions. [2023-11-06 23:02:01,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424901185770751 [2023-11-06 23:02:01,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1935 transitions. [2023-11-06 23:02:01,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1935 transitions. [2023-11-06 23:02:01,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:01,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1935 transitions. [2023-11-06 23:02:01,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 645.0) internal successors, (1935), 3 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:01,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:01,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:01,506 INFO L175 Difference]: Start difference. First operand has 66 places, 85 transitions, 298 flow. Second operand 3 states and 1935 transitions. [2023-11-06 23:02:01,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 462 flow [2023-11-06 23:02:01,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:02:01,509 INFO L231 Difference]: Finished difference. Result has 66 places, 84 transitions, 284 flow [2023-11-06 23:02:01,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=66, PETRI_TRANSITIONS=84} [2023-11-06 23:02:01,511 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -16 predicate places. [2023-11-06 23:02:01,511 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 84 transitions, 284 flow [2023-11-06 23:02:01,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.0) internal successors, (1884), 3 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:01,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:01,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:01,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 23:02:01,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 23:02:01,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:02:01,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash -412319540, now seen corresponding path program 1 times [2023-11-06 23:02:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:01,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921821994] [2023-11-06 23:02:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:01,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:02:01,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:01,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921821994] [2023-11-06 23:02:01,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921821994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:01,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162346906] [2023-11-06 23:02:01,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:01,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:01,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:01,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:01,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:02:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:01,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:02:01,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:01,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:02:01,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162346906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:01,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:02:01,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-06 23:02:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596455713] [2023-11-06 23:02:01,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:01,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:01,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:02,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1518 [2023-11-06 23:02:02,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 84 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 621.75) internal successors, (2487), 4 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:02,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:02,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1518 [2023-11-06 23:02:02,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:03,000 INFO L124 PetriNetUnfolderBase]: 4488/6373 cut-off events. [2023-11-06 23:02:03,000 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 23:02:03,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13063 conditions, 6373 events. 4488/6373 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30337 event pairs, 3825 based on Foata normal form. 0/3360 useless extension candidates. Maximal degree in co-relation 13057. Up to 6368 conditions per place. [2023-11-06 23:02:03,028 INFO L140 encePairwiseOnDemand]: 1513/1518 looper letters, 76 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2023-11-06 23:02:03,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 446 flow [2023-11-06 23:02:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2538 transitions. [2023-11-06 23:02:03,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798418972332013 [2023-11-06 23:02:03,035 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2538 transitions. [2023-11-06 23:02:03,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2538 transitions. [2023-11-06 23:02:03,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:03,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2538 transitions. [2023-11-06 23:02:03,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 634.5) internal successors, (2538), 4 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:03,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:03,054 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:03,055 INFO L175 Difference]: Start difference. First operand has 66 places, 84 transitions, 284 flow. Second operand 4 states and 2538 transitions. [2023-11-06 23:02:03,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 446 flow [2023-11-06 23:02:03,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 442 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:02:03,058 INFO L231 Difference]: Finished difference. Result has 68 places, 83 transitions, 290 flow [2023-11-06 23:02:03,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=68, PETRI_TRANSITIONS=83} [2023-11-06 23:02:03,059 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2023-11-06 23:02:03,059 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 83 transitions, 290 flow [2023-11-06 23:02:03,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 621.75) internal successors, (2487), 4 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:03,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:03,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:03,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:03,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 23:02:03,266 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:02:03,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:03,266 INFO L85 PathProgramCache]: Analyzing trace with hash -3158269, now seen corresponding path program 1 times [2023-11-06 23:02:03,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:03,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105492068] [2023-11-06 23:02:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:03,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:03,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105492068] [2023-11-06 23:02:03,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105492068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:03,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595617515] [2023-11-06 23:02:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:03,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:03,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:03,362 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:03,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:02:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:03,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:02:03,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:02:03,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:02:03,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595617515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:03,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:02:03,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-06 23:02:03,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264702055] [2023-11-06 23:02:03,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:03,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:03,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:03,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:03,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:03,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1518 [2023-11-06 23:02:03,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:03,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:03,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1518 [2023-11-06 23:02:03,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:04,557 INFO L124 PetriNetUnfolderBase]: 4487/6372 cut-off events. [2023-11-06 23:02:04,557 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 23:02:04,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13064 conditions, 6372 events. 4487/6372 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30310 event pairs, 3825 based on Foata normal form. 1/3364 useless extension candidates. Maximal degree in co-relation 13058. Up to 6367 conditions per place. [2023-11-06 23:02:04,592 INFO L140 encePairwiseOnDemand]: 1513/1518 looper letters, 75 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2023-11-06 23:02:04,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 82 transitions, 448 flow [2023-11-06 23:02:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:04,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:04,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2538 transitions. [2023-11-06 23:02:04,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798418972332013 [2023-11-06 23:02:04,598 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2538 transitions. [2023-11-06 23:02:04,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2538 transitions. [2023-11-06 23:02:04,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:04,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2538 transitions. [2023-11-06 23:02:04,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 634.5) internal successors, (2538), 4 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:04,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:04,609 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:04,610 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 290 flow. Second operand 4 states and 2538 transitions. [2023-11-06 23:02:04,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 82 transitions, 448 flow [2023-11-06 23:02:04,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:02:04,613 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 297 flow [2023-11-06 23:02:04,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2023-11-06 23:02:04,614 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-11-06 23:02:04,614 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 297 flow [2023-11-06 23:02:04,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:04,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:04,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:04,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 23:02:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 23:02:04,820 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:02:04,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash -101162642, now seen corresponding path program 1 times [2023-11-06 23:02:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:04,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630562721] [2023-11-06 23:02:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:02:04,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:04,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630562721] [2023-11-06 23:02:04,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630562721] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:04,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582742741] [2023-11-06 23:02:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:04,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:04,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:04,923 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:04,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:02:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:02:05,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:02:05,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:02:05,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582742741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:02:05,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:02:05,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:02:05,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742806846] [2023-11-06 23:02:05,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:02:05,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:02:05,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:05,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:02:05,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:02:05,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 23:02:05,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 631.0) internal successors, (4417), 7 states have internal predecessors, (4417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:05,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:05,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 23:02:05,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:06,140 INFO L124 PetriNetUnfolderBase]: 4496/6390 cut-off events. [2023-11-06 23:02:06,140 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 23:02:06,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13125 conditions, 6390 events. 4496/6390 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30314 event pairs, 3825 based on Foata normal form. 0/3376 useless extension candidates. Maximal degree in co-relation 13119. Up to 6368 conditions per place. [2023-11-06 23:02:06,171 INFO L140 encePairwiseOnDemand]: 1508/1518 looper letters, 72 selfloop transitions, 28 changer transitions 0/100 dead transitions. [2023-11-06 23:02:06,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 100 transitions, 569 flow [2023-11-06 23:02:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:02:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:02:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3862 transitions. [2023-11-06 23:02:06,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42402283706631533 [2023-11-06 23:02:06,181 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3862 transitions. [2023-11-06 23:02:06,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3862 transitions. [2023-11-06 23:02:06,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:06,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3862 transitions. [2023-11-06 23:02:06,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 643.6666666666666) internal successors, (3862), 6 states have internal predecessors, (3862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1518.0) internal successors, (10626), 7 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,196 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1518.0) internal successors, (10626), 7 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,196 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 297 flow. Second operand 6 states and 3862 transitions. [2023-11-06 23:02:06,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 100 transitions, 569 flow [2023-11-06 23:02:06,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:02:06,200 INFO L231 Difference]: Finished difference. Result has 75 places, 100 transitions, 459 flow [2023-11-06 23:02:06,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=459, PETRI_PLACES=75, PETRI_TRANSITIONS=100} [2023-11-06 23:02:06,201 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-11-06 23:02:06,201 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 100 transitions, 459 flow [2023-11-06 23:02:06,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 631.0) internal successors, (4417), 7 states have internal predecessors, (4417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:06,202 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:06,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:06,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 23:02:06,408 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:02:06,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:06,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1336067653, now seen corresponding path program 2 times [2023-11-06 23:02:06,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:06,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019691173] [2023-11-06 23:02:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:06,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 23:02:06,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019691173] [2023-11-06 23:02:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019691173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854307822] [2023-11-06 23:02:06,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:02:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:06,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:06,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:02:06,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:02:06,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:02:06,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:02:06,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 23:02:06,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:02:06,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854307822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:06,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:02:06,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-11-06 23:02:06,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171815745] [2023-11-06 23:02:06,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:06,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:06,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:02:06,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 635 out of 1518 [2023-11-06 23:02:06,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 100 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 638.0) internal successors, (1914), 3 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:06,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 635 of 1518 [2023-11-06 23:02:06,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:07,735 INFO L124 PetriNetUnfolderBase]: 4496/6387 cut-off events. [2023-11-06 23:02:07,735 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 23:02:07,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13158 conditions, 6387 events. 4496/6387 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30350 event pairs, 3825 based on Foata normal form. 3/3384 useless extension candidates. Maximal degree in co-relation 13149. Up to 6359 conditions per place. [2023-11-06 23:02:07,776 INFO L140 encePairwiseOnDemand]: 1513/1518 looper letters, 88 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2023-11-06 23:02:07,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 97 transitions, 623 flow [2023-11-06 23:02:07,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:02:07,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1960 transitions. [2023-11-06 23:02:07,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43039086517347386 [2023-11-06 23:02:07,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1960 transitions. [2023-11-06 23:02:07,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1960 transitions. [2023-11-06 23:02:07,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:07,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1960 transitions. [2023-11-06 23:02:07,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 653.3333333333334) internal successors, (1960), 3 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:07,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:07,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:07,789 INFO L175 Difference]: Start difference. First operand has 75 places, 100 transitions, 459 flow. Second operand 3 states and 1960 transitions. [2023-11-06 23:02:07,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 97 transitions, 623 flow [2023-11-06 23:02:07,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 532 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-06 23:02:07,793 INFO L231 Difference]: Finished difference. Result has 69 places, 97 transitions, 356 flow [2023-11-06 23:02:07,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=69, PETRI_TRANSITIONS=97} [2023-11-06 23:02:07,794 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-11-06 23:02:07,794 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 97 transitions, 356 flow [2023-11-06 23:02:07,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 638.0) internal successors, (1914), 3 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:07,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:07,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:07,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 23:02:08,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 23:02:08,000 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:02:08,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:08,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1894287988, now seen corresponding path program 1 times [2023-11-06 23:02:08,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:08,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640974336] [2023-11-06 23:02:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:08,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:02:08,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:08,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640974336] [2023-11-06 23:02:08,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640974336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:08,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:08,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:02:08,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113004641] [2023-11-06 23:02:08,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:08,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:08,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:08,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:02:08,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1518 [2023-11-06 23:02:08,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 97 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:08,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:08,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1518 [2023-11-06 23:02:08,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:09,350 INFO L124 PetriNetUnfolderBase]: 4495/6386 cut-off events. [2023-11-06 23:02:09,350 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-06 23:02:09,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13111 conditions, 6386 events. 4495/6386 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30362 event pairs, 3825 based on Foata normal form. 0/3377 useless extension candidates. Maximal degree in co-relation 13105. Up to 6382 conditions per place. [2023-11-06 23:02:09,384 INFO L140 encePairwiseOnDemand]: 1514/1518 looper letters, 90 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2023-11-06 23:02:09,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 544 flow [2023-11-06 23:02:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2534 transitions. [2023-11-06 23:02:09,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173254281949934 [2023-11-06 23:02:09,391 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2534 transitions. [2023-11-06 23:02:09,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2534 transitions. [2023-11-06 23:02:09,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:09,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2534 transitions. [2023-11-06 23:02:09,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 633.5) internal successors, (2534), 4 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:09,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:09,403 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:09,403 INFO L175 Difference]: Start difference. First operand has 69 places, 97 transitions, 356 flow. Second operand 4 states and 2534 transitions. [2023-11-06 23:02:09,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 544 flow [2023-11-06 23:02:09,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 96 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:02:09,406 INFO L231 Difference]: Finished difference. Result has 70 places, 96 transitions, 346 flow [2023-11-06 23:02:09,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=346, PETRI_PLACES=70, PETRI_TRANSITIONS=96} [2023-11-06 23:02:09,407 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-11-06 23:02:09,407 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 96 transitions, 346 flow [2023-11-06 23:02:09,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:09,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:09,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:09,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 23:02:09,408 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:02:09,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:09,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2024226525, now seen corresponding path program 1 times [2023-11-06 23:02:09,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:09,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463847358] [2023-11-06 23:02:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:09,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 23:02:09,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:09,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463847358] [2023-11-06 23:02:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463847358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:09,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:02:09,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663545660] [2023-11-06 23:02:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:09,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:02:09,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1518 [2023-11-06 23:02:09,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 96 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 624.25) internal successors, (2497), 4 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:09,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:09,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1518 [2023-11-06 23:02:09,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:10,751 INFO L124 PetriNetUnfolderBase]: 4494/6385 cut-off events. [2023-11-06 23:02:10,751 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-06 23:02:10,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13105 conditions, 6385 events. 4494/6385 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30330 event pairs, 3825 based on Foata normal form. 0/3372 useless extension candidates. Maximal degree in co-relation 13099. Up to 6381 conditions per place. [2023-11-06 23:02:10,789 INFO L140 encePairwiseOnDemand]: 1514/1518 looper letters, 89 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2023-11-06 23:02:10,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 95 transitions, 532 flow [2023-11-06 23:02:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2534 transitions. [2023-11-06 23:02:10,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173254281949934 [2023-11-06 23:02:10,797 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2534 transitions. [2023-11-06 23:02:10,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2534 transitions. [2023-11-06 23:02:10,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:10,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2534 transitions. [2023-11-06 23:02:10,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 633.5) internal successors, (2534), 4 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:10,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:10,810 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:10,810 INFO L175 Difference]: Start difference. First operand has 70 places, 96 transitions, 346 flow. Second operand 4 states and 2534 transitions. [2023-11-06 23:02:10,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 95 transitions, 532 flow [2023-11-06 23:02:10,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 95 transitions, 523 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 23:02:10,814 INFO L231 Difference]: Finished difference. Result has 71 places, 95 transitions, 345 flow [2023-11-06 23:02:10,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=71, PETRI_TRANSITIONS=95} [2023-11-06 23:02:10,815 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2023-11-06 23:02:10,815 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 95 transitions, 345 flow [2023-11-06 23:02:10,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 624.25) internal successors, (2497), 4 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:10,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:10,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:10,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 23:02:10,817 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:02:10,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash -794419052, now seen corresponding path program 1 times [2023-11-06 23:02:10,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:10,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489936852] [2023-11-06 23:02:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:10,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 23:02:11,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:11,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489936852] [2023-11-06 23:02:11,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489936852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:11,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163437791] [2023-11-06 23:02:11,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:11,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:11,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:11,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:11,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:02:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:11,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:02:11,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:02:11,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:02:11,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163437791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:11,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:02:11,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-06 23:02:11,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147242456] [2023-11-06 23:02:11,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:11,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:11,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:02:11,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1518 [2023-11-06 23:02:11,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 95 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 624.5) internal successors, (2498), 4 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:11,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:11,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1518 [2023-11-06 23:02:11,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:12,568 INFO L124 PetriNetUnfolderBase]: 4493/6384 cut-off events. [2023-11-06 23:02:12,569 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-06 23:02:12,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13105 conditions, 6384 events. 4493/6384 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30319 event pairs, 3825 based on Foata normal form. 0/3376 useless extension candidates. Maximal degree in co-relation 13099. Up to 6380 conditions per place. [2023-11-06 23:02:12,613 INFO L140 encePairwiseOnDemand]: 1514/1518 looper letters, 88 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2023-11-06 23:02:12,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 529 flow [2023-11-06 23:02:12,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:12,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2534 transitions. [2023-11-06 23:02:12,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173254281949934 [2023-11-06 23:02:12,622 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2534 transitions. [2023-11-06 23:02:12,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2534 transitions. [2023-11-06 23:02:12,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:12,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2534 transitions. [2023-11-06 23:02:12,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 633.5) internal successors, (2534), 4 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:12,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:12,634 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:12,634 INFO L175 Difference]: Start difference. First operand has 71 places, 95 transitions, 345 flow. Second operand 4 states and 2534 transitions. [2023-11-06 23:02:12,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 529 flow [2023-11-06 23:02:12,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 94 transitions, 520 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 23:02:12,637 INFO L231 Difference]: Finished difference. Result has 72 places, 94 transitions, 344 flow [2023-11-06 23:02:12,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=72, PETRI_TRANSITIONS=94} [2023-11-06 23:02:12,638 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2023-11-06 23:02:12,639 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 94 transitions, 344 flow [2023-11-06 23:02:12,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 624.5) internal successors, (2498), 4 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:12,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:12,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:12,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:12,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 23:02:12,846 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:02:12,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:12,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2099475665, now seen corresponding path program 1 times [2023-11-06 23:02:12,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:12,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702167868] [2023-11-06 23:02:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:12,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:14,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:14,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702167868] [2023-11-06 23:02:14,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702167868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:14,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465696042] [2023-11-06 23:02:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:14,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:14,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:14,401 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:14,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:02:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:14,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-06 23:02:14,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:14,752 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 23:02:14,821 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 23:02:14,927 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 23:02:14,927 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 23:02:15,017 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:15,167 INFO L322 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-06 23:02:15,167 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-06 23:02:15,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:15,364 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 23:02:15,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 23:02:15,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:15,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:15,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:15,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:15,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:15,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:15,660 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:15,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:15,712 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_625 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_625) c_~get_8~0.base) (+ (* c_~id_6~0 4) c_~get_8~0.offset)) 4294967296))) is different from false [2023-11-06 23:02:15,798 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_623 (Array Int Int)) (v_ArrVal_625 (Array Int Int)) (v_ArrVal_624 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_623) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_625) c_~get_8~0.base) (+ (* c_~id_6~0 4) c_~get_8~0.offset))))) is different from false [2023-11-06 23:02:15,818 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_623 (Array Int Int)) (v_ArrVal_622 (Array Int Int)) (v_ArrVal_625 (Array Int Int)) (v_ArrVal_624 (Array Int Int))) (< 0 (+ (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_622) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_623) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_625) c_~get_8~0.base) (+ (* c_~id_6~0 4) c_~get_8~0.offset)) 4294967296))) is different from false [2023-11-06 23:02:16,322 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:02:16,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2023-11-06 23:02:16,380 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:02:16,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 690179 treesize of output 681987 [2023-11-06 23:02:16,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 319 [2023-11-06 23:02:16,554 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 319 treesize of output 295 [2023-11-06 23:02:16,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 295 treesize of output 283 [2023-11-06 23:02:16,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 235 [2023-11-06 23:02:16,636 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 330 treesize of output 234 [2023-11-06 23:02:17,350 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:02:17,351 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 104 treesize of output 313 [2023-11-06 23:02:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2023-11-06 23:02:20,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465696042] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:02:20,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:02:20,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2023-11-06 23:02:20,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606367293] [2023-11-06 23:02:20,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:02:20,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 23:02:20,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:20,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 23:02:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=636, Unknown=12, NotChecked=168, Total=992 [2023-11-06 23:02:21,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 524 out of 1518 [2023-11-06 23:02:21,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 94 transitions, 344 flow. Second operand has 32 states, 32 states have (on average 525.59375) internal successors, (16819), 32 states have internal predecessors, (16819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:21,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:21,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 524 of 1518 [2023-11-06 23:02:21,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:29,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 23:02:31,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 23:02:33,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 23:02:36,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 23:02:43,469 INFO L124 PetriNetUnfolderBase]: 10196/14379 cut-off events. [2023-11-06 23:02:43,470 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-06 23:02:43,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29634 conditions, 14379 events. 10196/14379 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 77088 event pairs, 4977 based on Foata normal form. 0/7772 useless extension candidates. Maximal degree in co-relation 29628. Up to 6240 conditions per place. [2023-11-06 23:02:43,558 INFO L140 encePairwiseOnDemand]: 1484/1518 looper letters, 185 selfloop transitions, 58 changer transitions 0/243 dead transitions. [2023-11-06 23:02:43,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 243 transitions, 1261 flow [2023-11-06 23:02:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 23:02:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 23:02:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 9085 transitions. [2023-11-06 23:02:43,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3520499108734403 [2023-11-06 23:02:43,583 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 9085 transitions. [2023-11-06 23:02:43,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 9085 transitions. [2023-11-06 23:02:43,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:43,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 9085 transitions. [2023-11-06 23:02:43,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 534.4117647058823) internal successors, (9085), 17 states have internal predecessors, (9085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:43,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1518.0) internal successors, (27324), 18 states have internal predecessors, (27324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:43,624 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1518.0) internal successors, (27324), 18 states have internal predecessors, (27324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:43,624 INFO L175 Difference]: Start difference. First operand has 72 places, 94 transitions, 344 flow. Second operand 17 states and 9085 transitions. [2023-11-06 23:02:43,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 243 transitions, 1261 flow [2023-11-06 23:02:43,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 243 transitions, 1201 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 23:02:43,631 INFO L231 Difference]: Finished difference. Result has 94 places, 141 transitions, 737 flow [2023-11-06 23:02:43,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=737, PETRI_PLACES=94, PETRI_TRANSITIONS=141} [2023-11-06 23:02:43,631 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2023-11-06 23:02:43,632 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 141 transitions, 737 flow [2023-11-06 23:02:43,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 525.59375) internal successors, (16819), 32 states have internal predecessors, (16819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:43,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:43,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:43,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:43,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:43,840 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:02:43,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2099475664, now seen corresponding path program 1 times [2023-11-06 23:02:43,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:43,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268672087] [2023-11-06 23:02:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:43,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:02:46,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:46,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268672087] [2023-11-06 23:02:46,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268672087] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:46,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213772641] [2023-11-06 23:02:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:46,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:46,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:46,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:46,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:02:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:46,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-06 23:02:46,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:46,516 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 23:02:46,719 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 23:02:47,065 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 23:02:47,066 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 23:02:47,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:47,524 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 23:02:47,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 23:02:47,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:48,005 INFO L322 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-06 23:02:48,005 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-06 23:02:48,247 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:48,480 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 23:02:48,481 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 23:02:48,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:48,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:48,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:48,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:48,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:49,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:49,120 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:02:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:02:49,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:49,395 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_709 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_709) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset))))) is different from false [2023-11-06 23:02:49,630 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_708 (Array Int Int)) (v_ArrVal_707 (Array Int Int)) (v_ArrVal_709 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_707) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_708) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_709) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset)) 2147483649))) is different from false [2023-11-06 23:02:51,530 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:02:51,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2023-11-06 23:02:51,572 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:02:51,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10771 treesize of output 10707 [2023-11-06 23:02:51,708 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1328 treesize of output 1136 [2023-11-06 23:02:51,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1136 treesize of output 1112 [2023-11-06 23:02:51,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 553 treesize of output 547 [2023-11-06 23:02:51,848 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1106 treesize of output 1010 [2023-11-06 23:02:51,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1010 treesize of output 962 [2023-11-06 23:02:51,940 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 486 treesize of output 474 [2023-11-06 23:02:57,182 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:02:57,183 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 521 treesize of output 1022 [2023-11-06 23:03:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-06 23:03:26,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213772641] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:03:26,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:03:26,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 37 [2023-11-06 23:03:26,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942941050] [2023-11-06 23:03:26,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:03:26,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-06 23:03:26,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:26,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-06 23:03:26,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1053, Unknown=17, NotChecked=142, Total=1482 [2023-11-06 23:03:28,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 524 out of 1518 [2023-11-06 23:03:28,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 141 transitions, 737 flow. Second operand has 39 states, 39 states have (on average 525.4102564102565) internal successors, (20491), 39 states have internal predecessors, (20491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:28,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:28,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 524 of 1518 [2023-11-06 23:03:28,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:47,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 23:04:00,549 INFO L124 PetriNetUnfolderBase]: 21016/30015 cut-off events. [2023-11-06 23:04:00,549 INFO L125 PetriNetUnfolderBase]: For 10681/10681 co-relation queries the response was YES. [2023-11-06 23:04:00,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84213 conditions, 30015 events. 21016/30015 cut-off events. For 10681/10681 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 182762 event pairs, 11731 based on Foata normal form. 0/19440 useless extension candidates. Maximal degree in co-relation 84198. Up to 11824 conditions per place. [2023-11-06 23:04:00,765 INFO L140 encePairwiseOnDemand]: 1488/1518 looper letters, 284 selfloop transitions, 96 changer transitions 0/380 dead transitions. [2023-11-06 23:04:00,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 380 transitions, 2602 flow [2023-11-06 23:04:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 23:04:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-06 23:04:00,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 13850 transitions. [2023-11-06 23:04:00,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3509171987432857 [2023-11-06 23:04:00,789 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 13850 transitions. [2023-11-06 23:04:00,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 13850 transitions. [2023-11-06 23:04:00,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:00,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 13850 transitions. [2023-11-06 23:04:00,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 532.6923076923077) internal successors, (13850), 26 states have internal predecessors, (13850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:00,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 1518.0) internal successors, (40986), 27 states have internal predecessors, (40986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:00,851 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 1518.0) internal successors, (40986), 27 states have internal predecessors, (40986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:00,851 INFO L175 Difference]: Start difference. First operand has 94 places, 141 transitions, 737 flow. Second operand 26 states and 13850 transitions. [2023-11-06 23:04:00,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 380 transitions, 2602 flow [2023-11-06 23:04:00,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 380 transitions, 2576 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-06 23:04:00,885 INFO L231 Difference]: Finished difference. Result has 134 places, 224 transitions, 1681 flow [2023-11-06 23:04:00,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1681, PETRI_PLACES=134, PETRI_TRANSITIONS=224} [2023-11-06 23:04:00,886 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 52 predicate places. [2023-11-06 23:04:00,886 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 224 transitions, 1681 flow [2023-11-06 23:04:00,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 525.4102564102565) internal successors, (20491), 39 states have internal predecessors, (20491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:00,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:00,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:00,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:04:01,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:01,096 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:04:01,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:01,097 INFO L85 PathProgramCache]: Analyzing trace with hash -126936461, now seen corresponding path program 1 times [2023-11-06 23:04:01,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:01,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439683445] [2023-11-06 23:04:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:01,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:03,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439683445] [2023-11-06 23:04:03,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439683445] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:04:03,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348387062] [2023-11-06 23:04:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:03,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:03,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:03,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:04:03,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:04:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:03,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-06 23:04:03,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:04:03,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,565 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 23:04:03,565 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-11-06 23:04:03,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,695 INFO L322 Elim1Store]: treesize reduction 33, result has 13.2 percent of original size [2023-11-06 23:04:03,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 18 [2023-11-06 23:04:03,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,862 INFO L322 Elim1Store]: treesize reduction 35, result has 7.9 percent of original size [2023-11-06 23:04:03,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 16 [2023-11-06 23:04:04,121 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 23:04:04,559 INFO L322 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2023-11-06 23:04:04,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 41 treesize of output 51 [2023-11-06 23:04:04,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:04:05,037 INFO L322 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2023-11-06 23:04:05,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 60 [2023-11-06 23:04:05,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:04:06,008 INFO L322 Elim1Store]: treesize reduction 104, result has 37.0 percent of original size [2023-11-06 23:04:06,008 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 63 treesize of output 103 [2023-11-06 23:04:06,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:04:07,168 INFO L322 Elim1Store]: treesize reduction 104, result has 37.0 percent of original size [2023-11-06 23:04:07,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 63 treesize of output 103 [2023-11-06 23:04:07,706 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:04:08,176 INFO L322 Elim1Store]: treesize reduction 12, result has 85.2 percent of original size [2023-11-06 23:04:08,176 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 111 [2023-11-06 23:04:09,102 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:04:09,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:09,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:04:09,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 23:04:09,414 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-06 23:04:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:04:09,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:04:09,547 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_794 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_794) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset))))) is different from false [2023-11-06 23:04:11,611 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:04:11,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2023-11-06 23:04:11,651 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:04:11,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21571 treesize of output 21315 [2023-11-06 23:04:11,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 313 [2023-11-06 23:04:11,727 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 313 treesize of output 307 [2023-11-06 23:04:11,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 638 treesize of output 542 [2023-11-06 23:04:11,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 259 treesize of output 235 [2023-11-06 23:04:11,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 234 [2023-11-06 23:04:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:13,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348387062] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:04:13,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:04:13,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 29 [2023-11-06 23:04:13,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408640700] [2023-11-06 23:04:13,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:04:13,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-06 23:04:13,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:13,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-06 23:04:13,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=689, Unknown=12, NotChecked=56, Total=930 [2023-11-06 23:04:16,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 23:04:18,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 524 out of 1518 [2023-11-06 23:04:18,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 224 transitions, 1681 flow. Second operand has 31 states, 31 states have (on average 525.6774193548387) internal successors, (16296), 31 states have internal predecessors, (16296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:18,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:18,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 524 of 1518 [2023-11-06 23:04:18,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:21,349 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((v_ArrVal_793 (Array Int Int)) (v_ArrVal_794 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_793) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0)))) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197| Int)) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197|))) (forall ((v_ArrVal_793 (Array Int Int)) (v_ArrVal_792 (Array Int Int)) (v_ArrVal_794 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197| v_ArrVal_792) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_793) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0)))))) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197| Int) (v_ArrVal_791 (Array Int Int)) (v_ArrVal_793 (Array Int Int)) (v_ArrVal_792 (Array Int Int)) (v_ArrVal_794 (Array Int Int))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197|))) (< 0 (+ 2147483649 (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_791) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197| v_ArrVal_792) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_793) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0))))) (forall ((v_ArrVal_793 (Array Int Int)) (v_ArrVal_792 (Array Int Int)) (v_ArrVal_794 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_792) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_793) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0)))))) is different from false [2023-11-06 23:04:22,369 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197| Int)) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197|))) (forall ((v_ArrVal_793 (Array Int Int)) (v_ArrVal_792 (Array Int Int)) (v_ArrVal_794 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197| v_ArrVal_792) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_793) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0)))))) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197| Int) (v_ArrVal_791 (Array Int Int)) (v_ArrVal_793 (Array Int Int)) (v_ArrVal_792 (Array Int Int)) (v_ArrVal_794 (Array Int Int))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197|))) (< 0 (+ 2147483649 (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_791) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_197| v_ArrVal_792) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_793) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0))))) (forall ((v_ArrVal_793 (Array Int Int)) (v_ArrVal_792 (Array Int Int)) (v_ArrVal_794 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_792) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_793) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0)))))) is different from false [2023-11-06 23:04:36,659 INFO L124 PetriNetUnfolderBase]: 29129/41708 cut-off events. [2023-11-06 23:04:36,659 INFO L125 PetriNetUnfolderBase]: For 91499/91499 co-relation queries the response was YES. [2023-11-06 23:04:36,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159907 conditions, 41708 events. 29129/41708 cut-off events. For 91499/91499 co-relation queries the response was YES. Maximal size of possible extension queue 1583. Compared 266684 event pairs, 9622 based on Foata normal form. 0/32028 useless extension candidates. Maximal degree in co-relation 159875. Up to 28405 conditions per place. [2023-11-06 23:04:37,141 INFO L140 encePairwiseOnDemand]: 1497/1518 looper letters, 508 selfloop transitions, 144 changer transitions 0/652 dead transitions. [2023-11-06 23:04:37,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 652 transitions, 6177 flow [2023-11-06 23:04:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 23:04:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 23:04:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 11209 transitions. [2023-11-06 23:04:37,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35162180814354727 [2023-11-06 23:04:37,152 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 11209 transitions. [2023-11-06 23:04:37,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 11209 transitions. [2023-11-06 23:04:37,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:37,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 11209 transitions. [2023-11-06 23:04:37,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 533.7619047619048) internal successors, (11209), 21 states have internal predecessors, (11209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:37,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1518.0) internal successors, (33396), 22 states have internal predecessors, (33396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:37,202 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1518.0) internal successors, (33396), 22 states have internal predecessors, (33396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:37,202 INFO L175 Difference]: Start difference. First operand has 134 places, 224 transitions, 1681 flow. Second operand 21 states and 11209 transitions. [2023-11-06 23:04:37,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 652 transitions, 6177 flow [2023-11-06 23:04:37,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 652 transitions, 5985 flow, removed 87 selfloop flow, removed 3 redundant places. [2023-11-06 23:04:37,499 INFO L231 Difference]: Finished difference. Result has 167 places, 369 transitions, 3628 flow [2023-11-06 23:04:37,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3628, PETRI_PLACES=167, PETRI_TRANSITIONS=369} [2023-11-06 23:04:37,500 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 85 predicate places. [2023-11-06 23:04:37,500 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 369 transitions, 3628 flow [2023-11-06 23:04:37,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 525.6774193548387) internal successors, (16296), 31 states have internal predecessors, (16296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:37,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:37,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:37,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:04:37,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cf83b8-9477-4434-9130-9dfd5671c7af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:37,704 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 23:04:37,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2099475632, now seen corresponding path program 1 times [2023-11-06 23:04:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:37,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17547905] [2023-11-06 23:04:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:37,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat