./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:20:09,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:20:09,164 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:20:09,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:20:09,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:20:09,192 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:20:09,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:20:09,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:20:09,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:20:09,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:20:09,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:20:09,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:20:09,197 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:20:09,198 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:20:09,198 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:20:09,199 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:20:09,199 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:20:09,200 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:20:09,200 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:20:09,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:20:09,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:20:09,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:20:09,202 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:20:09,203 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:20:09,203 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:20:09,204 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:20:09,204 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:20:09,204 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:20:09,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:20:09,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:20:09,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:09,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:20:09,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:20:09,207 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:20:09,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:20:09,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:20:09,208 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:20:09,208 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:20:09,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:20:09,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:20:09,209 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:20:09,210 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_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2023-11-12 02:20:09,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:20:09,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:20:09,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:20:09,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:20:09,512 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:20:09,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/stack_longer-2.i [2023-11-12 02:20:12,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:20:13,111 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:20:13,112 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/sv-benchmarks/c/pthread/stack_longer-2.i [2023-11-12 02:20:13,144 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/data/277b6fe87/7849196470d34f738fa78b93a5900fb9/FLAGf84b09159 [2023-11-12 02:20:13,163 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/data/277b6fe87/7849196470d34f738fa78b93a5900fb9 [2023-11-12 02:20:13,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:20:13,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:20:13,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:13,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:20:13,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:20:13,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:13,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144d6466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13, skipping insertion in model container [2023-11-12 02:20:13,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:13,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:20:13,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:13,797 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:20:13,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:13,970 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:20:13,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13 WrapperNode [2023-11-12 02:20:13,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:13,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:13,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:20:13,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:20:13,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,043 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 162 [2023-11-12 02:20:14,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:14,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:20:14,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:20:14,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:20:14,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:20:14,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:20:14,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:20:14,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:20:14,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (1/1) ... [2023-11-12 02:20:14,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:14,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:14,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:14,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:20:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:20:14,174 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:20:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:20:14,175 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:20:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:20:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:20:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:20:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:20:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:20:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:20:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:20:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:20:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:20:14,178 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:20:14,361 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:20:14,363 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:20:14,645 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:20:14,655 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:20:14,656 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:20:14,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:14 BoogieIcfgContainer [2023-11-12 02:20:14,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:20:14,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:20:14,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:20:14,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:20:14,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:20:13" (1/3) ... [2023-11-12 02:20:14,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475d2ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:14, skipping insertion in model container [2023-11-12 02:20:14,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:13" (2/3) ... [2023-11-12 02:20:14,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475d2ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:14, skipping insertion in model container [2023-11-12 02:20:14,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:14" (3/3) ... [2023-11-12 02:20:14,672 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-11-12 02:20:14,683 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:20:14,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:20:14,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 02:20:14,693 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:20:14,811 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:20:14,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 183 transitions, 380 flow [2023-11-12 02:20:14,950 INFO L124 PetriNetUnfolderBase]: 12/181 cut-off events. [2023-11-12 02:20:14,950 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:20:14,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 181 events. 12/181 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 500 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2023-11-12 02:20:14,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 183 transitions, 380 flow [2023-11-12 02:20:14,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 171 transitions, 351 flow [2023-11-12 02:20:14,972 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:20:14,984 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 171 transitions, 351 flow [2023-11-12 02:20:14,987 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 171 transitions, 351 flow [2023-11-12 02:20:14,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 171 transitions, 351 flow [2023-11-12 02:20:15,035 INFO L124 PetriNetUnfolderBase]: 12/171 cut-off events. [2023-11-12 02:20:15,035 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:20:15,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 171 events. 12/171 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 412 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2023-11-12 02:20:15,046 INFO L119 LiptonReduction]: Number of co-enabled transitions 10672 [2023-11-12 02:20:20,111 INFO L134 LiptonReduction]: Checked pairs total: 14960 [2023-11-12 02:20:20,111 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-11-12 02:20:20,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:20:20,135 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b4ef6a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:20:20,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-12 02:20:20,143 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:20:20,143 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-12 02:20:20,144 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:20:20,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:20,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:20,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:20,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:20,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1256343441, now seen corresponding path program 1 times [2023-11-12 02:20:20,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:20,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114430202] [2023-11-12 02:20:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:20,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:20,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114430202] [2023-11-12 02:20:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114430202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:20,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:20,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:20,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211965081] [2023-11-12 02:20:20,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:20,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:20,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:20,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 353 [2023-11-12 02:20:20,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:20,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:20,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 353 [2023-11-12 02:20:20,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:20,992 INFO L124 PetriNetUnfolderBase]: 1098/1811 cut-off events. [2023-11-12 02:20:20,993 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-11-12 02:20:20,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3644 conditions, 1811 events. 1098/1811 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8379 event pairs, 429 based on Foata normal form. 30/1274 useless extension candidates. Maximal degree in co-relation 3406. Up to 1222 conditions per place. [2023-11-12 02:20:21,011 INFO L140 encePairwiseOnDemand]: 346/353 looper letters, 58 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-11-12 02:20:21,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 263 flow [2023-11-12 02:20:21,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:21,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 554 transitions. [2023-11-12 02:20:21,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231350330500472 [2023-11-12 02:20:21,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 554 transitions. [2023-11-12 02:20:21,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 554 transitions. [2023-11-12 02:20:21,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:21,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 554 transitions. [2023-11-12 02:20:21,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:21,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:21,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:21,067 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 554 transitions. [2023-11-12 02:20:21,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 263 flow [2023-11-12 02:20:21,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 255 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:20:21,076 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-11-12 02:20:21,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-12 02:20:21,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-11-12 02:20:21,084 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-11-12 02:20:21,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:21,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:21,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:21,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:20:21,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:21,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2074409300, now seen corresponding path program 1 times [2023-11-12 02:20:21,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:21,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389378270] [2023-11-12 02:20:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:21,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:21,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:21,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389378270] [2023-11-12 02:20:21,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389378270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:21,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:21,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724075785] [2023-11-12 02:20:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:21,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:21,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:21,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:21,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:21,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 353 [2023-11-12 02:20:21,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:21,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:21,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 353 [2023-11-12 02:20:21,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:21,662 INFO L124 PetriNetUnfolderBase]: 1646/2813 cut-off events. [2023-11-12 02:20:21,663 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-11-12 02:20:21,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5886 conditions, 2813 events. 1646/2813 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14741 event pairs, 823 based on Foata normal form. 0/2199 useless extension candidates. Maximal degree in co-relation 5314. Up to 1729 conditions per place. [2023-11-12 02:20:21,685 INFO L140 encePairwiseOnDemand]: 348/353 looper letters, 68 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-12 02:20:21,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 324 flow [2023-11-12 02:20:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-11-12 02:20:21,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372993389990557 [2023-11-12 02:20:21,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-11-12 02:20:21,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-11-12 02:20:21,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:21,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-11-12 02:20:21,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:21,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:21,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:21,743 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 569 transitions. [2023-11-12 02:20:21,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 324 flow [2023-11-12 02:20:21,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:21,748 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-11-12 02:20:21,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-11-12 02:20:21,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-12 02:20:21,749 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-11-12 02:20:21,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:21,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:21,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:21,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:20:21,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:21,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:21,756 INFO L85 PathProgramCache]: Analyzing trace with hash 826946362, now seen corresponding path program 1 times [2023-11-12 02:20:21,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:21,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521958129] [2023-11-12 02:20:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:21,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:21,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:21,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521958129] [2023-11-12 02:20:21,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521958129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:21,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:21,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:21,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56529462] [2023-11-12 02:20:21,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:21,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:21,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:21,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:21,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:21,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 353 [2023-11-12 02:20:21,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:21,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:21,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 353 [2023-11-12 02:20:21,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:22,398 INFO L124 PetriNetUnfolderBase]: 2077/3384 cut-off events. [2023-11-12 02:20:22,399 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2023-11-12 02:20:22,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 3384 events. 2077/3384 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18507 event pairs, 1141 based on Foata normal form. 0/2732 useless extension candidates. Maximal degree in co-relation 6986. Up to 2745 conditions per place. [2023-11-12 02:20:22,426 INFO L140 encePairwiseOnDemand]: 348/353 looper letters, 66 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-12 02:20:22,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 70 transitions, 332 flow [2023-11-12 02:20:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:22,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-11-12 02:20:22,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534466477809254 [2023-11-12 02:20:22,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-11-12 02:20:22,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-11-12 02:20:22,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:22,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-11-12 02:20:22,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:22,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:22,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:22,437 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 566 transitions. [2023-11-12 02:20:22,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 70 transitions, 332 flow [2023-11-12 02:20:22,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:22,441 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-11-12 02:20:22,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-11-12 02:20:22,442 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-12 02:20:22,443 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-11-12 02:20:22,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:22,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:22,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:22,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:20:22,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:22,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1075365825, now seen corresponding path program 1 times [2023-11-12 02:20:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847773206] [2023-11-12 02:20:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:22,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:20:22,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847773206] [2023-11-12 02:20:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847773206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:22,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:22,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500880900] [2023-11-12 02:20:22,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:22,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:22,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:22,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 353 [2023-11-12 02:20:22,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:22,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:22,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 353 [2023-11-12 02:20:22,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:22,981 INFO L124 PetriNetUnfolderBase]: 1793/3144 cut-off events. [2023-11-12 02:20:22,982 INFO L125 PetriNetUnfolderBase]: For 553/553 co-relation queries the response was YES. [2023-11-12 02:20:22,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 3144 events. 1793/3144 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17730 event pairs, 305 based on Foata normal form. 0/2762 useless extension candidates. Maximal degree in co-relation 6752. Up to 2274 conditions per place. [2023-11-12 02:20:23,008 INFO L140 encePairwiseOnDemand]: 349/353 looper letters, 57 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-11-12 02:20:23,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 317 flow [2023-11-12 02:20:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-11-12 02:20:23,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212464589235127 [2023-11-12 02:20:23,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-11-12 02:20:23,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-11-12 02:20:23,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:23,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-11-12 02:20:23,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:23,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:23,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:23,018 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 552 transitions. [2023-11-12 02:20:23,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 317 flow [2023-11-12 02:20:23,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:23,023 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 142 flow [2023-11-12 02:20:23,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-11-12 02:20:23,025 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-12 02:20:23,025 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 142 flow [2023-11-12 02:20:23,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:23,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:23,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:23,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:20:23,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:23,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:23,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1075365716, now seen corresponding path program 1 times [2023-11-12 02:20:23,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:23,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596040888] [2023-11-12 02:20:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:23,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:23,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:23,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596040888] [2023-11-12 02:20:23,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596040888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:23,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:23,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282788] [2023-11-12 02:20:23,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:23,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:23,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:23,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:23,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 353 [2023-11-12 02:20:23,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:23,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:23,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 353 [2023-11-12 02:20:23,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:23,521 INFO L124 PetriNetUnfolderBase]: 1680/2953 cut-off events. [2023-11-12 02:20:23,521 INFO L125 PetriNetUnfolderBase]: For 1261/1261 co-relation queries the response was YES. [2023-11-12 02:20:23,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7094 conditions, 2953 events. 1680/2953 cut-off events. For 1261/1261 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16484 event pairs, 95 based on Foata normal form. 78/2737 useless extension candidates. Maximal degree in co-relation 6644. Up to 2543 conditions per place. [2023-11-12 02:20:23,544 INFO L140 encePairwiseOnDemand]: 351/353 looper letters, 59 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-11-12 02:20:23,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 62 transitions, 321 flow [2023-11-12 02:20:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2023-11-12 02:20:23,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52219074598678 [2023-11-12 02:20:23,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2023-11-12 02:20:23,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2023-11-12 02:20:23,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:23,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2023-11-12 02:20:23,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:23,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:23,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:23,555 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 142 flow. Second operand 3 states and 553 transitions. [2023-11-12 02:20:23,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 62 transitions, 321 flow [2023-11-12 02:20:23,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:23,561 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 136 flow [2023-11-12 02:20:23,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-12 02:20:23,564 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-12 02:20:23,564 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 136 flow [2023-11-12 02:20:23,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:23,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:23,565 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:23,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:20:23,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:23,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1403989516, now seen corresponding path program 1 times [2023-11-12 02:20:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:23,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496542403] [2023-11-12 02:20:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:23,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:23,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:23,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496542403] [2023-11-12 02:20:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496542403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:23,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601547693] [2023-11-12 02:20:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:23,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:23,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:23,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:23,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:20:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:23,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:23,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:23,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601547693] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:23,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:23,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-12 02:20:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495857018] [2023-11-12 02:20:23,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:23,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:20:23,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:23,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:20:23,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:20:24,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 353 [2023-11-12 02:20:24,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 136 flow. Second operand has 10 states, 10 states have (on average 159.7) internal successors, (1597), 10 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:24,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:24,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 353 [2023-11-12 02:20:24,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:25,296 INFO L124 PetriNetUnfolderBase]: 4164/6895 cut-off events. [2023-11-12 02:20:25,297 INFO L125 PetriNetUnfolderBase]: For 2651/2651 co-relation queries the response was YES. [2023-11-12 02:20:25,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17103 conditions, 6895 events. 4164/6895 cut-off events. For 2651/2651 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39112 event pairs, 675 based on Foata normal form. 146/6439 useless extension candidates. Maximal degree in co-relation 16414. Up to 2039 conditions per place. [2023-11-12 02:20:25,350 INFO L140 encePairwiseOnDemand]: 341/353 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-11-12 02:20:25,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1360 flow [2023-11-12 02:20:25,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:20:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-12 02:20:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2427 transitions. [2023-11-12 02:20:25,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49109672197490895 [2023-11-12 02:20:25,360 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2427 transitions. [2023-11-12 02:20:25,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2427 transitions. [2023-11-12 02:20:25,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:25,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2427 transitions. [2023-11-12 02:20:25,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 173.35714285714286) internal successors, (2427), 14 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:25,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:25,382 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:25,382 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 136 flow. Second operand 14 states and 2427 transitions. [2023-11-12 02:20:25,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1360 flow [2023-11-12 02:20:25,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:25,398 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-11-12 02:20:25,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-11-12 02:20:25,399 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-11-12 02:20:25,399 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-11-12 02:20:25,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 159.7) internal successors, (1597), 10 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:25,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:25,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:25,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:25,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:25,613 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:25,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:25,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1421288740, now seen corresponding path program 1 times [2023-11-12 02:20:25,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:25,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793339362] [2023-11-12 02:20:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:25,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:25,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:25,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793339362] [2023-11-12 02:20:25,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793339362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:25,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:25,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:20:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555012412] [2023-11-12 02:20:25,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:25,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:25,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:25,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:25,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:25,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 353 [2023-11-12 02:20:25,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:25,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:25,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 353 [2023-11-12 02:20:25,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:26,312 INFO L124 PetriNetUnfolderBase]: 1910/3279 cut-off events. [2023-11-12 02:20:26,312 INFO L125 PetriNetUnfolderBase]: For 3409/3409 co-relation queries the response was YES. [2023-11-12 02:20:26,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10001 conditions, 3279 events. 1910/3279 cut-off events. For 3409/3409 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 17434 event pairs, 419 based on Foata normal form. 202/3241 useless extension candidates. Maximal degree in co-relation 6218. Up to 2259 conditions per place. [2023-11-12 02:20:26,345 INFO L140 encePairwiseOnDemand]: 348/353 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-11-12 02:20:26,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 524 flow [2023-11-12 02:20:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-11-12 02:20:26,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136921624173749 [2023-11-12 02:20:26,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-11-12 02:20:26,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-11-12 02:20:26,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:26,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-11-12 02:20:26,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:26,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:26,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:26,357 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 544 transitions. [2023-11-12 02:20:26,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 524 flow [2023-11-12 02:20:26,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 491 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-12 02:20:26,383 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-11-12 02:20:26,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-11-12 02:20:26,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-11-12 02:20:26,385 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-11-12 02:20:26,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:26,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:26,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:26,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:20:26,386 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:26,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash 572008227, now seen corresponding path program 1 times [2023-11-12 02:20:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:26,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116587147] [2023-11-12 02:20:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:26,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:26,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:26,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116587147] [2023-11-12 02:20:26,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116587147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:26,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226575373] [2023-11-12 02:20:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:26,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:26,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:26,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:26,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:20:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:26,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:20:26,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:26,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:26,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226575373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:26,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:20:26,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-12 02:20:26,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415595112] [2023-11-12 02:20:26,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:26,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:20:26,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:26,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:20:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:20:26,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 353 [2023-11-12 02:20:26,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:26,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:26,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 353 [2023-11-12 02:20:26,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:27,320 INFO L124 PetriNetUnfolderBase]: 1801/3184 cut-off events. [2023-11-12 02:20:27,320 INFO L125 PetriNetUnfolderBase]: For 3012/3012 co-relation queries the response was YES. [2023-11-12 02:20:27,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3012/3012 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15722 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 6110. Up to 1653 conditions per place. [2023-11-12 02:20:27,346 INFO L140 encePairwiseOnDemand]: 342/353 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-11-12 02:20:27,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-11-12 02:20:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:20:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:20:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1021 transitions. [2023-11-12 02:20:27,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48205854579792257 [2023-11-12 02:20:27,351 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1021 transitions. [2023-11-12 02:20:27,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1021 transitions. [2023-11-12 02:20:27,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:27,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1021 transitions. [2023-11-12 02:20:27,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.16666666666666) internal successors, (1021), 6 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:27,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:27,361 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:27,361 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 1021 transitions. [2023-11-12 02:20:27,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-11-12 02:20:27,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:27,369 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-11-12 02:20:27,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-11-12 02:20:27,370 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-12 02:20:27,370 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-11-12 02:20:27,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:27,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:27,370 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:20:27,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:27,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:20:27,576 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:27,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:27,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1732406697, now seen corresponding path program 1 times [2023-11-12 02:20:27,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:27,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717848691] [2023-11-12 02:20:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:27,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:27,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:27,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717848691] [2023-11-12 02:20:27,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717848691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:27,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:27,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:27,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705493522] [2023-11-12 02:20:27,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:27,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:27,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:27,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:27,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:27,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 353 [2023-11-12 02:20:27,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:27,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:27,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 353 [2023-11-12 02:20:27,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:28,069 INFO L124 PetriNetUnfolderBase]: 1584/2841 cut-off events. [2023-11-12 02:20:28,070 INFO L125 PetriNetUnfolderBase]: For 3626/3630 co-relation queries the response was YES. [2023-11-12 02:20:28,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 2841 events. 1584/2841 cut-off events. For 3626/3630 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 14267 event pairs, 515 based on Foata normal form. 4/2725 useless extension candidates. Maximal degree in co-relation 8360. Up to 2771 conditions per place. [2023-11-12 02:20:28,093 INFO L140 encePairwiseOnDemand]: 351/353 looper letters, 66 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-11-12 02:20:28,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 574 flow [2023-11-12 02:20:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-11-12 02:20:28,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089707271010387 [2023-11-12 02:20:28,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-11-12 02:20:28,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-11-12 02:20:28,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:28,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-11-12 02:20:28,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:28,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:28,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:28,102 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 3 states and 539 transitions. [2023-11-12 02:20:28,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 574 flow [2023-11-12 02:20:28,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 566 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:28,115 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 393 flow [2023-11-12 02:20:28,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2023-11-12 02:20:28,117 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-11-12 02:20:28,117 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 393 flow [2023-11-12 02:20:28,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:28,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:28,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:20:28,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:20:28,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:28,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1732406635, now seen corresponding path program 1 times [2023-11-12 02:20:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:28,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500903413] [2023-11-12 02:20:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:28,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:20:28,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:28,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500903413] [2023-11-12 02:20:28,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500903413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:28,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:28,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:28,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577073574] [2023-11-12 02:20:28,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:28,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:28,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:28,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:28,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:28,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 353 [2023-11-12 02:20:28,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:28,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:28,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 353 [2023-11-12 02:20:28,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:28,611 INFO L124 PetriNetUnfolderBase]: 1421/2564 cut-off events. [2023-11-12 02:20:28,611 INFO L125 PetriNetUnfolderBase]: For 3268/3270 co-relation queries the response was YES. [2023-11-12 02:20:28,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7997 conditions, 2564 events. 1421/2564 cut-off events. For 3268/3270 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12306 event pairs, 475 based on Foata normal form. 2/2560 useless extension candidates. Maximal degree in co-relation 4718. Up to 1498 conditions per place. [2023-11-12 02:20:28,631 INFO L140 encePairwiseOnDemand]: 349/353 looper letters, 74 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-11-12 02:20:28,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 652 flow [2023-11-12 02:20:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:28,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-11-12 02:20:28,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136921624173749 [2023-11-12 02:20:28,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-11-12 02:20:28,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-11-12 02:20:28,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:28,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-11-12 02:20:28,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:28,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:28,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:28,641 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 393 flow. Second operand 3 states and 544 transitions. [2023-11-12 02:20:28,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 652 flow [2023-11-12 02:20:28,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 83 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:28,651 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 405 flow [2023-11-12 02:20:28,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-11-12 02:20:28,653 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-12 02:20:28,653 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 405 flow [2023-11-12 02:20:28,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:28,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:28,654 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:28,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:20:28,654 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:28,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash -501402597, now seen corresponding path program 1 times [2023-11-12 02:20:28,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:28,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897606577] [2023-11-12 02:20:28,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:28,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:28,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897606577] [2023-11-12 02:20:28,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897606577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:28,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:28,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:20:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555779903] [2023-11-12 02:20:28,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:28,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:20:28,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:28,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:20:28,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:20:28,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 353 [2023-11-12 02:20:28,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:28,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:28,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 353 [2023-11-12 02:20:28,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:29,251 INFO L124 PetriNetUnfolderBase]: 1424/2553 cut-off events. [2023-11-12 02:20:29,252 INFO L125 PetriNetUnfolderBase]: For 4195/4195 co-relation queries the response was YES. [2023-11-12 02:20:29,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 2553 events. 1424/2553 cut-off events. For 4195/4195 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 12229 event pairs, 1086 based on Foata normal form. 18/2565 useless extension candidates. Maximal degree in co-relation 8138. Up to 2415 conditions per place. [2023-11-12 02:20:29,271 INFO L140 encePairwiseOnDemand]: 348/353 looper letters, 58 selfloop transitions, 6 changer transitions 9/74 dead transitions. [2023-11-12 02:20:29,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 595 flow [2023-11-12 02:20:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:20:29,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:20:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 683 transitions. [2023-11-12 02:20:29,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48371104815864024 [2023-11-12 02:20:29,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 683 transitions. [2023-11-12 02:20:29,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 683 transitions. [2023-11-12 02:20:29,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:29,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 683 transitions. [2023-11-12 02:20:29,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:29,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:29,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:29,283 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 405 flow. Second operand 4 states and 683 transitions. [2023-11-12 02:20:29,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 595 flow [2023-11-12 02:20:29,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:29,294 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 398 flow [2023-11-12 02:20:29,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-11-12 02:20:29,294 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-11-12 02:20:29,294 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 398 flow [2023-11-12 02:20:29,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:29,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:29,296 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:29,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:20:29,296 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:29,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:29,296 INFO L85 PathProgramCache]: Analyzing trace with hash -626639967, now seen corresponding path program 1 times [2023-11-12 02:20:29,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:29,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037968803] [2023-11-12 02:20:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:29,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:29,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:29,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037968803] [2023-11-12 02:20:29,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037968803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:29,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:29,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:20:29,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317951713] [2023-11-12 02:20:29,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:29,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:20:29,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:20:29,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:29,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 353 [2023-11-12 02:20:29,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:29,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:29,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 353 [2023-11-12 02:20:29,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:29,999 INFO L124 PetriNetUnfolderBase]: 1408/2497 cut-off events. [2023-11-12 02:20:29,999 INFO L125 PetriNetUnfolderBase]: For 4099/4099 co-relation queries the response was YES. [2023-11-12 02:20:30,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8463 conditions, 2497 events. 1408/2497 cut-off events. For 4099/4099 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11360 event pairs, 271 based on Foata normal form. 8/2499 useless extension candidates. Maximal degree in co-relation 8254. Up to 1338 conditions per place. [2023-11-12 02:20:30,027 INFO L140 encePairwiseOnDemand]: 345/353 looper letters, 88 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2023-11-12 02:20:30,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 107 transitions, 883 flow [2023-11-12 02:20:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:20:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:20:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 848 transitions. [2023-11-12 02:20:30,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804532577903683 [2023-11-12 02:20:30,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 848 transitions. [2023-11-12 02:20:30,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 848 transitions. [2023-11-12 02:20:30,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:30,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 848 transitions. [2023-11-12 02:20:30,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:30,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:30,043 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:30,043 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 398 flow. Second operand 5 states and 848 transitions. [2023-11-12 02:20:30,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 107 transitions, 883 flow [2023-11-12 02:20:30,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 107 transitions, 871 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:20:30,058 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 563 flow [2023-11-12 02:20:30,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=563, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-11-12 02:20:30,059 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-11-12 02:20:30,060 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 563 flow [2023-11-12 02:20:30,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:30,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:30,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:30,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:20:30,061 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:30,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:30,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1583708120, now seen corresponding path program 1 times [2023-11-12 02:20:30,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:30,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427877565] [2023-11-12 02:20:30,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:30,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:30,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:30,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427877565] [2023-11-12 02:20:30,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427877565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:30,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667533147] [2023-11-12 02:20:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:30,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:30,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:30,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:30,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:20:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:30,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:20:30,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:30,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:30,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:30,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667533147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:30,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:20:30,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-12 02:20:30,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661040828] [2023-11-12 02:20:30,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:30,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:20:30,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:30,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:20:30,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:20:30,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 353 [2023-11-12 02:20:30,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 563 flow. Second operand has 5 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:30,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:30,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 353 [2023-11-12 02:20:30,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:31,094 INFO L124 PetriNetUnfolderBase]: 1410/2523 cut-off events. [2023-11-12 02:20:31,094 INFO L125 PetriNetUnfolderBase]: For 5683/5683 co-relation queries the response was YES. [2023-11-12 02:20:31,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8826 conditions, 2523 events. 1410/2523 cut-off events. For 5683/5683 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11743 event pairs, 448 based on Foata normal form. 22/2545 useless extension candidates. Maximal degree in co-relation 8614. Up to 1346 conditions per place. [2023-11-12 02:20:31,113 INFO L140 encePairwiseOnDemand]: 345/353 looper letters, 73 selfloop transitions, 20 changer transitions 0/94 dead transitions. [2023-11-12 02:20:31,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 94 transitions, 850 flow [2023-11-12 02:20:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:20:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:20:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1004 transitions. [2023-11-12 02:20:31,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740321057601511 [2023-11-12 02:20:31,118 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1004 transitions. [2023-11-12 02:20:31,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1004 transitions. [2023-11-12 02:20:31,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:31,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1004 transitions. [2023-11-12 02:20:31,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.33333333333334) internal successors, (1004), 6 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:31,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:31,127 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:31,127 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 563 flow. Second operand 6 states and 1004 transitions. [2023-11-12 02:20:31,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 94 transitions, 850 flow [2023-11-12 02:20:31,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 842 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:31,141 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 601 flow [2023-11-12 02:20:31,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=601, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2023-11-12 02:20:31,141 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-11-12 02:20:31,142 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 601 flow [2023-11-12 02:20:31,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:31,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:31,142 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-12 02:20:31,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:31,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 02:20:31,349 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:31,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:31,349 INFO L85 PathProgramCache]: Analyzing trace with hash 667126378, now seen corresponding path program 1 times [2023-11-12 02:20:31,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:31,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901728144] [2023-11-12 02:20:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:31,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:31,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:31,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901728144] [2023-11-12 02:20:31,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901728144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:31,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779921609] [2023-11-12 02:20:31,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:31,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:31,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:31,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:31,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:20:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:31,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:20:31,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:32,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:32,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779921609] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:32,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:32,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2023-11-12 02:20:32,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782968802] [2023-11-12 02:20:32,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:32,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-12 02:20:32,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:32,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-12 02:20:32,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2023-11-12 02:20:32,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 353 [2023-11-12 02:20:32,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 601 flow. Second operand has 21 states, 21 states have (on average 155.76190476190476) internal successors, (3271), 21 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:32,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:32,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 353 [2023-11-12 02:20:32,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:33,804 INFO L124 PetriNetUnfolderBase]: 2450/4359 cut-off events. [2023-11-12 02:20:33,805 INFO L125 PetriNetUnfolderBase]: For 13095/13095 co-relation queries the response was YES. [2023-11-12 02:20:33,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15891 conditions, 4359 events. 2450/4359 cut-off events. For 13095/13095 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19588 event pairs, 347 based on Foata normal form. 100/4459 useless extension candidates. Maximal degree in co-relation 15676. Up to 873 conditions per place. [2023-11-12 02:20:33,852 INFO L140 encePairwiseOnDemand]: 343/353 looper letters, 271 selfloop transitions, 72 changer transitions 0/344 dead transitions. [2023-11-12 02:20:33,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 344 transitions, 2828 flow [2023-11-12 02:20:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-12 02:20:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-12 02:20:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3930 transitions. [2023-11-12 02:20:33,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46388101983002833 [2023-11-12 02:20:33,867 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3930 transitions. [2023-11-12 02:20:33,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3930 transitions. [2023-11-12 02:20:33,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:33,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3930 transitions. [2023-11-12 02:20:33,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 163.75) internal successors, (3930), 24 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:33,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 353.0) internal successors, (8825), 25 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:33,901 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 353.0) internal successors, (8825), 25 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:33,901 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 601 flow. Second operand 24 states and 3930 transitions. [2023-11-12 02:20:33,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 344 transitions, 2828 flow [2023-11-12 02:20:33,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 344 transitions, 2805 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:33,928 INFO L231 Difference]: Finished difference. Result has 107 places, 115 transitions, 1318 flow [2023-11-12 02:20:33,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1318, PETRI_PLACES=107, PETRI_TRANSITIONS=115} [2023-11-12 02:20:33,929 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2023-11-12 02:20:33,929 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 115 transitions, 1318 flow [2023-11-12 02:20:33,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 155.76190476190476) internal successors, (3271), 21 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:33,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:33,931 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:33,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:34,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 02:20:34,137 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:34,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1007939862, now seen corresponding path program 2 times [2023-11-12 02:20:34,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:34,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745113897] [2023-11-12 02:20:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:34,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:34,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:34,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745113897] [2023-11-12 02:20:34,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745113897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:34,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:34,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:20:34,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396911692] [2023-11-12 02:20:34,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:34,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:20:34,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:34,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:20:34,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:20:34,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 353 [2023-11-12 02:20:34,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 115 transitions, 1318 flow. Second operand has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:34,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:34,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 353 [2023-11-12 02:20:34,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:35,355 INFO L124 PetriNetUnfolderBase]: 2313/4164 cut-off events. [2023-11-12 02:20:35,355 INFO L125 PetriNetUnfolderBase]: For 16263/16263 co-relation queries the response was YES. [2023-11-12 02:20:35,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17104 conditions, 4164 events. 2313/4164 cut-off events. For 16263/16263 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18874 event pairs, 300 based on Foata normal form. 72/4236 useless extension candidates. Maximal degree in co-relation 16874. Up to 2986 conditions per place. [2023-11-12 02:20:35,399 INFO L140 encePairwiseOnDemand]: 341/353 looper letters, 80 selfloop transitions, 54 changer transitions 0/135 dead transitions. [2023-11-12 02:20:35,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 135 transitions, 1527 flow [2023-11-12 02:20:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:20:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:20:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1230 transitions. [2023-11-12 02:20:35,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43555240793201133 [2023-11-12 02:20:35,405 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1230 transitions. [2023-11-12 02:20:35,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1230 transitions. [2023-11-12 02:20:35,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:35,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1230 transitions. [2023-11-12 02:20:35,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.75) internal successors, (1230), 8 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:35,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:35,416 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:35,416 INFO L175 Difference]: Start difference. First operand has 107 places, 115 transitions, 1318 flow. Second operand 8 states and 1230 transitions. [2023-11-12 02:20:35,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 135 transitions, 1527 flow [2023-11-12 02:20:35,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 135 transitions, 1370 flow, removed 59 selfloop flow, removed 8 redundant places. [2023-11-12 02:20:35,465 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 1036 flow [2023-11-12 02:20:35,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1036, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2023-11-12 02:20:35,466 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 63 predicate places. [2023-11-12 02:20:35,466 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 1036 flow [2023-11-12 02:20:35,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:35,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:35,467 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:35,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:20:35,467 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:35,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:35,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1007939797, now seen corresponding path program 2 times [2023-11-12 02:20:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:35,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137729805] [2023-11-12 02:20:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:35,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 02:20:35,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:35,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137729805] [2023-11-12 02:20:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137729805] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:35,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559254636] [2023-11-12 02:20:35,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:20:35,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:35,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:35,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:35,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:20:36,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:20:36,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:20:36,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:20:36,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:20:36,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:20:36,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559254636] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:36,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:36,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2023-11-12 02:20:36,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449936567] [2023-11-12 02:20:36,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:36,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:20:36,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:36,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:20:36,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:20:36,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-11-12 02:20:36,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 1036 flow. Second operand has 13 states, 13 states have (on average 147.6153846153846) internal successors, (1919), 13 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:36,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:36,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-11-12 02:20:36,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:37,703 INFO L124 PetriNetUnfolderBase]: 2908/5229 cut-off events. [2023-11-12 02:20:37,703 INFO L125 PetriNetUnfolderBase]: For 18599/18599 co-relation queries the response was YES. [2023-11-12 02:20:37,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21083 conditions, 5229 events. 2908/5229 cut-off events. For 18599/18599 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 25081 event pairs, 428 based on Foata normal form. 38/5267 useless extension candidates. Maximal degree in co-relation 20852. Up to 2471 conditions per place. [2023-11-12 02:20:37,776 INFO L140 encePairwiseOnDemand]: 340/353 looper letters, 184 selfloop transitions, 56 changer transitions 0/241 dead transitions. [2023-11-12 02:20:37,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 241 transitions, 2405 flow [2023-11-12 02:20:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:20:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-12 02:20:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2297 transitions. [2023-11-12 02:20:37,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43380547686496695 [2023-11-12 02:20:37,786 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2297 transitions. [2023-11-12 02:20:37,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2297 transitions. [2023-11-12 02:20:37,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:37,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2297 transitions. [2023-11-12 02:20:37,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 153.13333333333333) internal successors, (2297), 15 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:37,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:37,805 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:37,805 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 1036 flow. Second operand 15 states and 2297 transitions. [2023-11-12 02:20:37,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 241 transitions, 2405 flow [2023-11-12 02:20:37,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 241 transitions, 2316 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-12 02:20:37,873 INFO L231 Difference]: Finished difference. Result has 124 places, 126 transitions, 1515 flow [2023-11-12 02:20:37,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1515, PETRI_PLACES=124, PETRI_TRANSITIONS=126} [2023-11-12 02:20:37,874 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2023-11-12 02:20:37,874 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 126 transitions, 1515 flow [2023-11-12 02:20:37,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 147.6153846153846) internal successors, (1919), 13 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:37,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:37,875 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:37,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:38,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 02:20:38,081 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:38,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:38,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1091238863, now seen corresponding path program 3 times [2023-11-12 02:20:38,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:38,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811288794] [2023-11-12 02:20:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:38,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:20:38,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:38,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811288794] [2023-11-12 02:20:38,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811288794] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:38,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563469629] [2023-11-12 02:20:38,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:20:38,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:38,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:38,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:38,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:20:39,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-12 02:20:39,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:20:39,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:20:39,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:20:39,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:20:39,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563469629] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:39,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:39,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 22 [2023-11-12 02:20:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066335895] [2023-11-12 02:20:39,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:39,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-12 02:20:39,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-12 02:20:39,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2023-11-12 02:20:39,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 353 [2023-11-12 02:20:39,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 126 transitions, 1515 flow. Second operand has 24 states, 24 states have (on average 146.41666666666666) internal successors, (3514), 24 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:39,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 353 [2023-11-12 02:20:39,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:41,673 INFO L124 PetriNetUnfolderBase]: 3558/6375 cut-off events. [2023-11-12 02:20:41,674 INFO L125 PetriNetUnfolderBase]: For 32887/32887 co-relation queries the response was YES. [2023-11-12 02:20:41,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27468 conditions, 6375 events. 3558/6375 cut-off events. For 32887/32887 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 32161 event pairs, 455 based on Foata normal form. 48/6423 useless extension candidates. Maximal degree in co-relation 27228. Up to 1321 conditions per place. [2023-11-12 02:20:41,753 INFO L140 encePairwiseOnDemand]: 341/353 looper letters, 291 selfloop transitions, 109 changer transitions 0/401 dead transitions. [2023-11-12 02:20:41,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 401 transitions, 3998 flow [2023-11-12 02:20:41,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-12 02:20:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-12 02:20:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4548 transitions. [2023-11-12 02:20:41,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294617563739377 [2023-11-12 02:20:41,765 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4548 transitions. [2023-11-12 02:20:41,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4548 transitions. [2023-11-12 02:20:41,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:41,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4548 transitions. [2023-11-12 02:20:41,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 151.6) internal successors, (4548), 30 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,803 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,803 INFO L175 Difference]: Start difference. First operand has 124 places, 126 transitions, 1515 flow. Second operand 30 states and 4548 transitions. [2023-11-12 02:20:41,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 401 transitions, 3998 flow [2023-11-12 02:20:41,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 401 transitions, 3896 flow, removed 51 selfloop flow, removed 0 redundant places. [2023-11-12 02:20:41,931 INFO L231 Difference]: Finished difference. Result has 164 places, 157 transitions, 2263 flow [2023-11-12 02:20:41,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2263, PETRI_PLACES=164, PETRI_TRANSITIONS=157} [2023-11-12 02:20:41,932 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2023-11-12 02:20:41,932 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 157 transitions, 2263 flow [2023-11-12 02:20:41,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 146.41666666666666) internal successors, (3514), 24 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:41,934 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-11-12 02:20:41,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:42,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:20:42,146 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:42,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:42,146 INFO L85 PathProgramCache]: Analyzing trace with hash 112323702, now seen corresponding path program 2 times [2023-11-12 02:20:42,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:42,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996671685] [2023-11-12 02:20:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:42,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:43,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:43,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996671685] [2023-11-12 02:20:43,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996671685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:43,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963556860] [2023-11-12 02:20:43,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:20:43,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:43,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:43,534 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:43,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:20:43,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:20:43,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:20:43,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 02:20:43,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:43,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:44,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963556860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:44,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:44,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 15] total 39 [2023-11-12 02:20:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415012411] [2023-11-12 02:20:44,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:44,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-12 02:20:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-12 02:20:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1215, Unknown=0, NotChecked=0, Total=1640 [2023-11-12 02:20:44,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 353 [2023-11-12 02:20:44,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 157 transitions, 2263 flow. Second operand has 41 states, 41 states have (on average 155.6829268292683) internal successors, (6383), 41 states have internal predecessors, (6383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:44,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:44,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 353 [2023-11-12 02:20:44,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:48,376 INFO L124 PetriNetUnfolderBase]: 5858/10531 cut-off events. [2023-11-12 02:20:48,377 INFO L125 PetriNetUnfolderBase]: For 83722/83722 co-relation queries the response was YES. [2023-11-12 02:20:48,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48913 conditions, 10531 events. 5858/10531 cut-off events. For 83722/83722 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 51545 event pairs, 917 based on Foata normal form. 240/10771 useless extension candidates. Maximal degree in co-relation 48660. Up to 2778 conditions per place. [2023-11-12 02:20:48,496 INFO L140 encePairwiseOnDemand]: 344/353 looper letters, 545 selfloop transitions, 133 changer transitions 0/679 dead transitions. [2023-11-12 02:20:48,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 679 transitions, 7159 flow [2023-11-12 02:20:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-12 02:20:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-12 02:20:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7191 transitions. [2023-11-12 02:20:48,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4629796549060005 [2023-11-12 02:20:48,518 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7191 transitions. [2023-11-12 02:20:48,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7191 transitions. [2023-11-12 02:20:48,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:48,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7191 transitions. [2023-11-12 02:20:48,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 163.4318181818182) internal successors, (7191), 44 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 353.0) internal successors, (15885), 45 states have internal predecessors, (15885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,569 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 353.0) internal successors, (15885), 45 states have internal predecessors, (15885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,570 INFO L175 Difference]: Start difference. First operand has 164 places, 157 transitions, 2263 flow. Second operand 44 states and 7191 transitions. [2023-11-12 02:20:48,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 679 transitions, 7159 flow [2023-11-12 02:20:48,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 679 transitions, 6853 flow, removed 126 selfloop flow, removed 12 redundant places. [2023-11-12 02:20:48,892 INFO L231 Difference]: Finished difference. Result has 210 places, 222 transitions, 3556 flow [2023-11-12 02:20:48,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3556, PETRI_PLACES=210, PETRI_TRANSITIONS=222} [2023-11-12 02:20:48,893 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 168 predicate places. [2023-11-12 02:20:48,893 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 222 transitions, 3556 flow [2023-11-12 02:20:48,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 155.6829268292683) internal successors, (6383), 41 states have internal predecessors, (6383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:48,895 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:48,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:49,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:20:49,103 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:20:49,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1552885291, now seen corresponding path program 4 times [2023-11-12 02:20:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:49,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411088010] [2023-11-12 02:20:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:49,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:50,318 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:20:50,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:50,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411088010] [2023-11-12 02:20:50,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411088010] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:50,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208503639] [2023-11-12 02:20:50,319 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 02:20:50,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:50,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:50,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:50,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fb27af-2d1c-4133-b00d-75a52178796a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:20:50,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 02:20:50,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:20:50,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 02:20:50,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:20:50,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:20:51,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208503639] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:51,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:51,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 32 [2023-11-12 02:20:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540958410] [2023-11-12 02:20:51,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:51,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-12 02:20:51,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:51,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-12 02:20:51,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2023-11-12 02:20:51,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 353 [2023-11-12 02:20:51,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 222 transitions, 3556 flow. Second operand has 34 states, 34 states have (on average 146.2058823529412) internal successors, (4971), 34 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:51,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:51,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 353 [2023-11-12 02:20:51,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:56,882 INFO L124 PetriNetUnfolderBase]: 8021/14364 cut-off events. [2023-11-12 02:20:56,882 INFO L125 PetriNetUnfolderBase]: For 131797/131797 co-relation queries the response was YES. [2023-11-12 02:20:57,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69757 conditions, 14364 events. 8021/14364 cut-off events. For 131797/131797 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 76244 event pairs, 733 based on Foata normal form. 96/14460 useless extension candidates. Maximal degree in co-relation 69490. Up to 2988 conditions per place. [2023-11-12 02:20:57,071 INFO L140 encePairwiseOnDemand]: 341/353 looper letters, 444 selfloop transitions, 238 changer transitions 0/683 dead transitions. [2023-11-12 02:20:57,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 683 transitions, 8414 flow [2023-11-12 02:20:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-12 02:20:57,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-12 02:20:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 6949 transitions. [2023-11-12 02:20:57,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42794679147678283 [2023-11-12 02:20:57,083 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 6949 transitions. [2023-11-12 02:20:57,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 6949 transitions. [2023-11-12 02:20:57,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:57,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 6949 transitions. [2023-11-12 02:20:57,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 151.06521739130434) internal successors, (6949), 46 states have internal predecessors, (6949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:57,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 353.0) internal successors, (16591), 47 states have internal predecessors, (16591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:57,117 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 353.0) internal successors, (16591), 47 states have internal predecessors, (16591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:57,117 INFO L175 Difference]: Start difference. First operand has 210 places, 222 transitions, 3556 flow. Second operand 46 states and 6949 transitions. [2023-11-12 02:20:57,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 683 transitions, 8414 flow