./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --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_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/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_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/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_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:21:55,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:21:56,025 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:21:56,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:21:56,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:21:56,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:21:56,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:21:56,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:21:56,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:21:56,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:21:56,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:21:56,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:21:56,090 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:21:56,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:21:56,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:21:56,093 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:21:56,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:21:56,094 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:21:56,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:21:56,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:21:56,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:21:56,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:21:56,097 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:21:56,097 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:21:56,098 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:21:56,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:21:56,099 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:21:56,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:21:56,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:21:56,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:21:56,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:21:56,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:21:56,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:21:56,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:21:56,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:21:56,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:21:56,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:21:56,104 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:21:56,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:21:56,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:21:56,105 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:21:56,106 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_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-11-12 02:21:56,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:21:56,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:21:56,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:21:56,443 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:21:56,444 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:21:56,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-12 02:21:59,550 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:21:59,746 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:21:59,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-12 02:21:59,757 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/data/b83e55e5f/d182bff688de47a8817b6c28b269d4a1/FLAGd233fe609 [2023-11-12 02:21:59,769 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/data/b83e55e5f/d182bff688de47a8817b6c28b269d4a1 [2023-11-12 02:21:59,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:21:59,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:21:59,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:21:59,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:21:59,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:21:59,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:21:59" (1/1) ... [2023-11-12 02:21:59,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2927d0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:59, skipping insertion in model container [2023-11-12 02:21:59,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:21:59" (1/1) ... [2023-11-12 02:21:59,821 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:00,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:00,032 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:22:00,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:00,089 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:22:00,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00 WrapperNode [2023-11-12 02:22:00,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:00,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:00,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:22:00,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:22:00,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,156 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 218 [2023-11-12 02:22:00,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:00,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:22:00,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:22:00,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:22:00,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:22:00,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:22:00,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:22:00,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:22:00,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:00,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:00,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:22:00,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:22:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:22:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:22:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:22:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:22:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:22:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:22:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:22:00,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:22:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:22:00,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:22:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:22:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:22:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:22:00,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:22:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:22:00,316 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:22:00,439 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:22:00,441 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:22:01,103 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:22:01,124 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:22:01,125 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-12 02:22:01,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:01 BoogieIcfgContainer [2023-11-12 02:22:01,130 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:22:01,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:22:01,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:22:01,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:22:01,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:21:59" (1/3) ... [2023-11-12 02:22:01,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cb4939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:01, skipping insertion in model container [2023-11-12 02:22:01,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (2/3) ... [2023-11-12 02:22:01,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cb4939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:01, skipping insertion in model container [2023-11-12 02:22:01,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:01" (3/3) ... [2023-11-12 02:22:01,145 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-12 02:22:01,155 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:22:01,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:22:01,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-12 02:22:01,168 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:22:01,303 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:22:01,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 350 transitions, 714 flow [2023-11-12 02:22:01,496 INFO L124 PetriNetUnfolderBase]: 27/348 cut-off events. [2023-11-12 02:22:01,496 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:22:01,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 348 events. 27/348 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 492 event pairs, 0 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 251. Up to 2 conditions per place. [2023-11-12 02:22:01,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 350 transitions, 714 flow [2023-11-12 02:22:01,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 321 transitions, 654 flow [2023-11-12 02:22:01,534 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:22:01,557 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 321 transitions, 654 flow [2023-11-12 02:22:01,565 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 321 transitions, 654 flow [2023-11-12 02:22:01,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 321 transitions, 654 flow [2023-11-12 02:22:01,664 INFO L124 PetriNetUnfolderBase]: 26/321 cut-off events. [2023-11-12 02:22:01,664 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:22:01,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 321 events. 26/321 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 488 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 251. Up to 2 conditions per place. [2023-11-12 02:22:01,672 INFO L119 LiptonReduction]: Number of co-enabled transitions 2244 [2023-11-12 02:22:22,190 WARN L293 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 133 DAG size of output: 128 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-12 02:22:29,127 INFO L134 LiptonReduction]: Checked pairs total: 3936 [2023-11-12 02:22:29,127 INFO L136 LiptonReduction]: Total number of compositions: 373 [2023-11-12 02:22:29,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:22:29,148 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;@227234dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:22:29,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-12 02:22:29,150 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:22:29,150 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:22:29,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:22:29,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:29,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:22:29,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:29,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:29,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1279, now seen corresponding path program 1 times [2023-11-12 02:22:29,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:29,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198622171] [2023-11-12 02:22:29,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:29,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:29,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:29,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198622171] [2023-11-12 02:22:29,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198622171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:29,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:29,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:22:29,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881837793] [2023-11-12 02:22:29,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:29,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:22:29,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:29,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:22:29,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:22:29,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 723 [2023-11-12 02:22:29,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 326.5) internal successors, (653), 2 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:29,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:29,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 723 [2023-11-12 02:22:29,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:29,559 INFO L124 PetriNetUnfolderBase]: 311/535 cut-off events. [2023-11-12 02:22:29,559 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-12 02:22:29,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 535 events. 311/535 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2096 event pairs, 249 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 924. Up to 536 conditions per place. [2023-11-12 02:22:29,569 INFO L140 encePairwiseOnDemand]: 717/723 looper letters, 47 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-11-12 02:22:29,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 200 flow [2023-11-12 02:22:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:22:29,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:22:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 705 transitions. [2023-11-12 02:22:29,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487551867219917 [2023-11-12 02:22:29,629 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 705 transitions. [2023-11-12 02:22:29,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 705 transitions. [2023-11-12 02:22:29,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:29,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 705 transitions. [2023-11-12 02:22:29,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 352.5) internal successors, (705), 2 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:29,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 723.0) internal successors, (2169), 3 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:29,653 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 723.0) internal successors, (2169), 3 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:29,655 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 2 states and 705 transitions. [2023-11-12 02:22:29,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 200 flow [2023-11-12 02:22:29,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:22:29,663 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 98 flow [2023-11-12 02:22:29,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-11-12 02:22:29,669 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-12 02:22:29,669 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 98 flow [2023-11-12 02:22:29,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 326.5) internal successors, (653), 2 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:29,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:29,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:22:29,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:22:29,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:29,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash 40949, now seen corresponding path program 1 times [2023-11-12 02:22:29,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:29,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868632592] [2023-11-12 02:22:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:29,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:29,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:29,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307977041] [2023-11-12 02:22:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:29,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:29,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:29,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:29,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:22:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:29,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:29,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:29,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:29,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868632592] [2023-11-12 02:22:29,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:29,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307977041] [2023-11-12 02:22:29,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307977041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:29,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:29,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:29,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454376743] [2023-11-12 02:22:29,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:29,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:29,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:29,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 723 [2023-11-12 02:22:29,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:29,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:29,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 723 [2023-11-12 02:22:29,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:30,121 INFO L124 PetriNetUnfolderBase]: 311/532 cut-off events. [2023-11-12 02:22:30,122 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-12 02:22:30,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 532 events. 311/532 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2083 event pairs, 249 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 1071. Up to 524 conditions per place. [2023-11-12 02:22:30,127 INFO L140 encePairwiseOnDemand]: 714/723 looper letters, 38 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-11-12 02:22:30,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 180 flow [2023-11-12 02:22:30,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2023-11-12 02:22:30,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182111572153066 [2023-11-12 02:22:30,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2023-11-12 02:22:30,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2023-11-12 02:22:30,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:30,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2023-11-12 02:22:30,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,147 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 98 flow. Second operand 3 states and 980 transitions. [2023-11-12 02:22:30,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 180 flow [2023-11-12 02:22:30,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:22:30,149 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 104 flow [2023-11-12 02:22:30,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-11-12 02:22:30,151 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-12 02:22:30,151 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 104 flow [2023-11-12 02:22:30,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:30,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:22:30,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:22:30,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-12 02:22:30,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:30,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:30,359 INFO L85 PathProgramCache]: Analyzing trace with hash 40948, now seen corresponding path program 1 times [2023-11-12 02:22:30,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:30,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928341694] [2023-11-12 02:22:30,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:30,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:30,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:30,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942590454] [2023-11-12 02:22:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:30,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:30,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:30,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:30,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:22:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:30,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:30,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:30,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:30,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928341694] [2023-11-12 02:22:30,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:30,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942590454] [2023-11-12 02:22:30,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942590454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:30,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:30,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016762176] [2023-11-12 02:22:30,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:30,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:30,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:30,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:30,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 723 [2023-11-12 02:22:30,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:30,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 723 [2023-11-12 02:22:30,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:30,763 INFO L124 PetriNetUnfolderBase]: 316/540 cut-off events. [2023-11-12 02:22:30,763 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-12 02:22:30,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 540 events. 316/540 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2110 event pairs, 249 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 1097. Up to 537 conditions per place. [2023-11-12 02:22:30,768 INFO L140 encePairwiseOnDemand]: 710/723 looper letters, 42 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-11-12 02:22:30,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 232 flow [2023-11-12 02:22:30,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:30,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2023-11-12 02:22:30,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45550945136007376 [2023-11-12 02:22:30,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 988 transitions. [2023-11-12 02:22:30,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 988 transitions. [2023-11-12 02:22:30,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:30,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 988 transitions. [2023-11-12 02:22:30,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,786 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 104 flow. Second operand 3 states and 988 transitions. [2023-11-12 02:22:30,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 232 flow [2023-11-12 02:22:30,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:30,791 INFO L231 Difference]: Finished difference. Result has 45 places, 52 transitions, 170 flow [2023-11-12 02:22:30,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=45, PETRI_TRANSITIONS=52} [2023-11-12 02:22:30,793 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-12 02:22:30,793 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 52 transitions, 170 flow [2023-11-12 02:22:30,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:30,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:22:30,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:31,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:31,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:31,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:31,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1271183, now seen corresponding path program 1 times [2023-11-12 02:22:31,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:31,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395093614] [2023-11-12 02:22:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:31,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:31,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:31,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405507108] [2023-11-12 02:22:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:31,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:31,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:31,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:31,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:22:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:22:31,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:31,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395093614] [2023-11-12 02:22:31,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405507108] [2023-11-12 02:22:31,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405507108] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:31,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:22:31,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 02:22:31,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157555969] [2023-11-12 02:22:31,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:31,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:31,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:31,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:31,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 723 [2023-11-12 02:22:31,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 52 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:31,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:31,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 723 [2023-11-12 02:22:31,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:31,557 INFO L124 PetriNetUnfolderBase]: 331/564 cut-off events. [2023-11-12 02:22:31,557 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-12 02:22:31,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 564 events. 331/564 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2189 event pairs, 249 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 1193. Up to 549 conditions per place. [2023-11-12 02:22:31,562 INFO L140 encePairwiseOnDemand]: 710/723 looper letters, 42 selfloop transitions, 34 changer transitions 0/76 dead transitions. [2023-11-12 02:22:31,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 424 flow [2023-11-12 02:22:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:22:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:22:31,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1951 transitions. [2023-11-12 02:22:31,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497464269248502 [2023-11-12 02:22:31,576 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1951 transitions. [2023-11-12 02:22:31,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1951 transitions. [2023-11-12 02:22:31,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:31,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1951 transitions. [2023-11-12 02:22:31,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 325.1666666666667) internal successors, (1951), 6 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:31,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 723.0) internal successors, (5061), 7 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:31,597 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 723.0) internal successors, (5061), 7 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:31,598 INFO L175 Difference]: Start difference. First operand has 45 places, 52 transitions, 170 flow. Second operand 6 states and 1951 transitions. [2023-11-12 02:22:31,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 424 flow [2023-11-12 02:22:31,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:31,603 INFO L231 Difference]: Finished difference. Result has 51 places, 76 transitions, 379 flow [2023-11-12 02:22:31,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=379, PETRI_PLACES=51, PETRI_TRANSITIONS=76} [2023-11-12 02:22:31,606 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-12 02:22:31,606 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 76 transitions, 379 flow [2023-11-12 02:22:31,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:31,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:31,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:22:31,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 02:22:31,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:31,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:31,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:31,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1222183890, now seen corresponding path program 1 times [2023-11-12 02:22:31,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:31,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900105378] [2023-11-12 02:22:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:31,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:31,843 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:31,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318182902] [2023-11-12 02:22:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:31,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:31,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:31,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:31,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:22:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:31,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:32,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:32,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:32,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900105378] [2023-11-12 02:22:32,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:32,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318182902] [2023-11-12 02:22:32,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318182902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:32,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:32,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:32,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957867163] [2023-11-12 02:22:32,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:32,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:32,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:32,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:32,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:32,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 723 [2023-11-12 02:22:32,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 76 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:32,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:32,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 723 [2023-11-12 02:22:32,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:32,223 INFO L124 PetriNetUnfolderBase]: 327/559 cut-off events. [2023-11-12 02:22:32,224 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:22:32,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 559 events. 327/559 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2176 event pairs, 249 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 1231. Up to 538 conditions per place. [2023-11-12 02:22:32,229 INFO L140 encePairwiseOnDemand]: 720/723 looper letters, 65 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-11-12 02:22:32,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 488 flow [2023-11-12 02:22:32,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1007 transitions. [2023-11-12 02:22:32,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46426924850161366 [2023-11-12 02:22:32,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1007 transitions. [2023-11-12 02:22:32,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1007 transitions. [2023-11-12 02:22:32,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:32,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1007 transitions. [2023-11-12 02:22:32,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:32,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:32,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:32,245 INFO L175 Difference]: Start difference. First operand has 51 places, 76 transitions, 379 flow. Second operand 3 states and 1007 transitions. [2023-11-12 02:22:32,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 488 flow [2023-11-12 02:22:32,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 440 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:32,250 INFO L231 Difference]: Finished difference. Result has 51 places, 71 transitions, 310 flow [2023-11-12 02:22:32,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=51, PETRI_TRANSITIONS=71} [2023-11-12 02:22:32,251 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-12 02:22:32,251 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 71 transitions, 310 flow [2023-11-12 02:22:32,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:32,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:32,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:22:32,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:32,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:32,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:32,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:32,459 INFO L85 PathProgramCache]: Analyzing trace with hash -767004214, now seen corresponding path program 1 times [2023-11-12 02:22:32,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:32,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597828822] [2023-11-12 02:22:32,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:32,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:32,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155871175] [2023-11-12 02:22:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:32,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:32,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:32,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:32,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:22:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:32,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:32,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:22:32,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:32,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:32,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597828822] [2023-11-12 02:22:32,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:32,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155871175] [2023-11-12 02:22:32,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155871175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:32,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:32,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:32,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291362095] [2023-11-12 02:22:32,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:32,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:32,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:32,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 723 [2023-11-12 02:22:32,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 71 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:32,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:32,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 723 [2023-11-12 02:22:32,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:32,870 INFO L124 PetriNetUnfolderBase]: 333/572 cut-off events. [2023-11-12 02:22:32,870 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-12 02:22:32,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 572 events. 333/572 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2251 event pairs, 249 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 1265. Up to 561 conditions per place. [2023-11-12 02:22:32,875 INFO L140 encePairwiseOnDemand]: 719/723 looper letters, 73 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-11-12 02:22:32,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 552 flow [2023-11-12 02:22:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-11-12 02:22:32,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665744582757031 [2023-11-12 02:22:32,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-11-12 02:22:32,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-11-12 02:22:32,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:32,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-11-12 02:22:32,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:32,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:32,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:32,894 INFO L175 Difference]: Start difference. First operand has 51 places, 71 transitions, 310 flow. Second operand 3 states and 1012 transitions. [2023-11-12 02:22:32,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 552 flow [2023-11-12 02:22:32,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 84 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:32,901 INFO L231 Difference]: Finished difference. Result has 52 places, 77 transitions, 381 flow [2023-11-12 02:22:32,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=381, PETRI_PLACES=52, PETRI_TRANSITIONS=77} [2023-11-12 02:22:32,904 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-11-12 02:22:32,905 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 77 transitions, 381 flow [2023-11-12 02:22:32,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:32,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:32,906 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:22:32,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:33,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:33,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:33,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:33,112 INFO L85 PathProgramCache]: Analyzing trace with hash -783110476, now seen corresponding path program 2 times [2023-11-12 02:22:33,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:33,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860878984] [2023-11-12 02:22:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:33,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:33,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:33,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354011126] [2023-11-12 02:22:33,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:22:33,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:33,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:33,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:33,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:22:33,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:22:33,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:22:33,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:22:33,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:22:38,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:38,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:38,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860878984] [2023-11-12 02:22:38,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:38,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354011126] [2023-11-12 02:22:38,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354011126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:38,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:38,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:38,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238536380] [2023-11-12 02:22:38,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:38,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:38,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:38,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:38,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:38,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 723 [2023-11-12 02:22:38,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 77 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:38,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:38,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 723 [2023-11-12 02:22:38,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:38,839 INFO L124 PetriNetUnfolderBase]: 333/571 cut-off events. [2023-11-12 02:22:38,840 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-12 02:22:38,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 571 events. 333/571 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2240 event pairs, 249 based on Foata normal form. 1/335 useless extension candidates. Maximal degree in co-relation 1280. Up to 566 conditions per place. [2023-11-12 02:22:38,845 INFO L140 encePairwiseOnDemand]: 720/723 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-11-12 02:22:38,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 523 flow [2023-11-12 02:22:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:38,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-11-12 02:22:38,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582757030889811 [2023-11-12 02:22:38,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-11-12 02:22:38,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-11-12 02:22:38,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:38,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-11-12 02:22:38,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:38,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:38,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:38,860 INFO L175 Difference]: Start difference. First operand has 52 places, 77 transitions, 381 flow. Second operand 3 states and 994 transitions. [2023-11-12 02:22:38,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 523 flow [2023-11-12 02:22:38,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:38,864 INFO L231 Difference]: Finished difference. Result has 52 places, 76 transitions, 372 flow [2023-11-12 02:22:38,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=52, PETRI_TRANSITIONS=76} [2023-11-12 02:22:38,865 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-11-12 02:22:38,865 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 76 transitions, 372 flow [2023-11-12 02:22:38,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:38,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:38,866 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:38,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-12 02:22:39,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:22:39,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:39,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1644598265, now seen corresponding path program 1 times [2023-11-12 02:22:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:39,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661402490] [2023-11-12 02:22:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:39,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:39,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:39,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179227732] [2023-11-12 02:22:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:39,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:39,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:39,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:39,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:22:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:39,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:22:39,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:39,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:39,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:39,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661402490] [2023-11-12 02:22:39,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:39,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179227732] [2023-11-12 02:22:39,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179227732] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:39,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:22:39,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-12 02:22:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883194215] [2023-11-12 02:22:39,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:39,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:22:39,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:39,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:22:39,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:39,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 723 [2023-11-12 02:22:39,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 76 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 301.7142857142857) internal successors, (2112), 7 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:39,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:39,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 723 [2023-11-12 02:22:39,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:40,514 INFO L124 PetriNetUnfolderBase]: 620/1057 cut-off events. [2023-11-12 02:22:40,514 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-12 02:22:40,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2277 conditions, 1057 events. 620/1057 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4723 event pairs, 480 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 2267. Up to 564 conditions per place. [2023-11-12 02:22:40,523 INFO L140 encePairwiseOnDemand]: 714/723 looper letters, 96 selfloop transitions, 10 changer transitions 1/107 dead transitions. [2023-11-12 02:22:40,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 107 transitions, 667 flow [2023-11-12 02:22:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:22:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:22:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1880 transitions. [2023-11-12 02:22:40,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43337943752881514 [2023-11-12 02:22:40,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1880 transitions. [2023-11-12 02:22:40,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1880 transitions. [2023-11-12 02:22:40,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:40,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1880 transitions. [2023-11-12 02:22:40,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.3333333333333) internal successors, (1880), 6 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:40,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 723.0) internal successors, (5061), 7 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:40,549 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 723.0) internal successors, (5061), 7 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:40,550 INFO L175 Difference]: Start difference. First operand has 52 places, 76 transitions, 372 flow. Second operand 6 states and 1880 transitions. [2023-11-12 02:22:40,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 107 transitions, 667 flow [2023-11-12 02:22:40,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 107 transitions, 655 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:40,555 INFO L231 Difference]: Finished difference. Result has 56 places, 79 transitions, 411 flow [2023-11-12 02:22:40,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=411, PETRI_PLACES=56, PETRI_TRANSITIONS=79} [2023-11-12 02:22:40,558 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-11-12 02:22:40,558 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 79 transitions, 411 flow [2023-11-12 02:22:40,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 301.7142857142857) internal successors, (2112), 7 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:40,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:40,560 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-12 02:22:40,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:40,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:22:40,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:40,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1967670435, now seen corresponding path program 1 times [2023-11-12 02:22:40,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:40,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523621923] [2023-11-12 02:22:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:40,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:40,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729557856] [2023-11-12 02:22:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:40,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:40,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:40,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:40,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:22:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:40,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:22:40,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:22:40,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:40,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:40,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523621923] [2023-11-12 02:22:40,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:40,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729557856] [2023-11-12 02:22:40,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729557856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:40,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:40,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:22:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569195553] [2023-11-12 02:22:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:40,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:40,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:40,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:40,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:41,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 723 [2023-11-12 02:22:41,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 79 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 307.25) internal successors, (1229), 4 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:41,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:41,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 723 [2023-11-12 02:22:41,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:41,400 INFO L124 PetriNetUnfolderBase]: 620/1058 cut-off events. [2023-11-12 02:22:41,401 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-12 02:22:41,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1058 events. 620/1058 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4830 event pairs, 480 based on Foata normal form. 1/625 useless extension candidates. Maximal degree in co-relation 2296. Up to 1053 conditions per place. [2023-11-12 02:22:41,409 INFO L140 encePairwiseOnDemand]: 718/723 looper letters, 70 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2023-11-12 02:22:41,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 80 transitions, 578 flow [2023-11-12 02:22:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:41,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:22:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1272 transitions. [2023-11-12 02:22:41,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43983402489626555 [2023-11-12 02:22:41,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1272 transitions. [2023-11-12 02:22:41,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1272 transitions. [2023-11-12 02:22:41,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:41,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1272 transitions. [2023-11-12 02:22:41,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:41,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 723.0) internal successors, (3615), 5 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:41,444 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 723.0) internal successors, (3615), 5 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:41,445 INFO L175 Difference]: Start difference. First operand has 56 places, 79 transitions, 411 flow. Second operand 4 states and 1272 transitions. [2023-11-12 02:22:41,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 80 transitions, 578 flow [2023-11-12 02:22:41,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 572 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-12 02:22:41,449 INFO L231 Difference]: Finished difference. Result has 59 places, 80 transitions, 432 flow [2023-11-12 02:22:41,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=59, PETRI_TRANSITIONS=80} [2023-11-12 02:22:41,450 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2023-11-12 02:22:41,450 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 80 transitions, 432 flow [2023-11-12 02:22:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.25) internal successors, (1229), 4 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:41,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:41,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:41,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:41,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-12 02:22:41,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:41,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:41,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1643393915, now seen corresponding path program 2 times [2023-11-12 02:22:41,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:41,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43386359] [2023-11-12 02:22:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:41,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:41,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:41,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223464881] [2023-11-12 02:22:41,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:22:41,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:41,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:41,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:41,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:22:41,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:22:41,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:22:41,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:22:41,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:22:41,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:22:41,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:41,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43386359] [2023-11-12 02:22:41,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:41,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223464881] [2023-11-12 02:22:41,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223464881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:41,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:22:41,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2023-11-12 02:22:41,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396313124] [2023-11-12 02:22:41,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:41,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:41,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:41,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 723 [2023-11-12 02:22:41,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 80 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:41,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:41,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 723 [2023-11-12 02:22:41,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:42,224 INFO L124 PetriNetUnfolderBase]: 616/1052 cut-off events. [2023-11-12 02:22:42,224 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-12 02:22:42,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 1052 events. 616/1052 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4803 event pairs, 480 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 2271. Up to 1031 conditions per place. [2023-11-12 02:22:42,232 INFO L140 encePairwiseOnDemand]: 717/723 looper letters, 54 selfloop transitions, 21 changer transitions 0/75 dead transitions. [2023-11-12 02:22:42,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 542 flow [2023-11-12 02:22:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:22:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1304 transitions. [2023-11-12 02:22:42,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508990318118949 [2023-11-12 02:22:42,238 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1304 transitions. [2023-11-12 02:22:42,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1304 transitions. [2023-11-12 02:22:42,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:42,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1304 transitions. [2023-11-12 02:22:42,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:42,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 723.0) internal successors, (3615), 5 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:42,249 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 723.0) internal successors, (3615), 5 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:42,250 INFO L175 Difference]: Start difference. First operand has 59 places, 80 transitions, 432 flow. Second operand 4 states and 1304 transitions. [2023-11-12 02:22:42,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 542 flow [2023-11-12 02:22:42,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 515 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:42,254 INFO L231 Difference]: Finished difference. Result has 60 places, 75 transitions, 430 flow [2023-11-12 02:22:42,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=60, PETRI_TRANSITIONS=75} [2023-11-12 02:22:42,255 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-11-12 02:22:42,256 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 75 transitions, 430 flow [2023-11-12 02:22:42,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:42,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:42,256 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-12 02:22:42,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:42,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:42,462 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:42,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:42,463 INFO L85 PathProgramCache]: Analyzing trace with hash -475543576, now seen corresponding path program 1 times [2023-11-12 02:22:42,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:42,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109021912] [2023-11-12 02:22:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:42,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:42,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:42,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937657980] [2023-11-12 02:22:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:42,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:42,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:42,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:42,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:22:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:42,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:22:42,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:22:42,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:22:42,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:42,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109021912] [2023-11-12 02:22:42,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:42,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937657980] [2023-11-12 02:22:42,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937657980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:42,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:22:42,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-12 02:22:42,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347458162] [2023-11-12 02:22:42,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:42,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:22:42,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:42,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:22:42,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:22:43,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 723 [2023-11-12 02:22:43,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 75 transitions, 430 flow. Second operand has 10 states, 10 states have (on average 301.2) internal successors, (3012), 10 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:43,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:43,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 723 [2023-11-12 02:22:43,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:43,641 INFO L124 PetriNetUnfolderBase]: 924/1575 cut-off events. [2023-11-12 02:22:43,641 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-11-12 02:22:43,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 1575 events. 924/1575 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7868 event pairs, 729 based on Foata normal form. 1/931 useless extension candidates. Maximal degree in co-relation 3373. Up to 1040 conditions per place. [2023-11-12 02:22:43,653 INFO L140 encePairwiseOnDemand]: 715/723 looper letters, 91 selfloop transitions, 19 changer transitions 0/110 dead transitions. [2023-11-12 02:22:43,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 110 transitions, 761 flow [2023-11-12 02:22:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:22:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:22:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2786 transitions. [2023-11-12 02:22:43,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281542953742124 [2023-11-12 02:22:43,664 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2786 transitions. [2023-11-12 02:22:43,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2786 transitions. [2023-11-12 02:22:43,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:43,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2786 transitions. [2023-11-12 02:22:43,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 309.55555555555554) internal successors, (2786), 9 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:43,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 723.0) internal successors, (7230), 10 states have internal predecessors, (7230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:43,686 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 723.0) internal successors, (7230), 10 states have internal predecessors, (7230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:43,686 INFO L175 Difference]: Start difference. First operand has 60 places, 75 transitions, 430 flow. Second operand 9 states and 2786 transitions. [2023-11-12 02:22:43,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 110 transitions, 761 flow [2023-11-12 02:22:43,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 737 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:43,692 INFO L231 Difference]: Finished difference. Result has 67 places, 79 transitions, 487 flow [2023-11-12 02:22:43,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=487, PETRI_PLACES=67, PETRI_TRANSITIONS=79} [2023-11-12 02:22:43,692 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2023-11-12 02:22:43,693 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 79 transitions, 487 flow [2023-11-12 02:22:43,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 301.2) internal successors, (3012), 10 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:43,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:43,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:43,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:43,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:43,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:43,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1542434720, now seen corresponding path program 1 times [2023-11-12 02:22:43,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:43,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626530719] [2023-11-12 02:22:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:43,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:43,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:43,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360081504] [2023-11-12 02:22:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:43,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:43,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:43,915 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:43,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:22:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:22:44,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:44,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:44,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626530719] [2023-11-12 02:22:44,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360081504] [2023-11-12 02:22:44,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360081504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:44,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022784073] [2023-11-12 02:22:44,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:44,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:22:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:44,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:22:44,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:44,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 723 [2023-11-12 02:22:44,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 79 transitions, 487 flow. Second operand has 5 states, 5 states have (on average 303.6) internal successors, (1518), 5 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:44,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:44,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 723 [2023-11-12 02:22:44,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:44,910 INFO L124 PetriNetUnfolderBase]: 1342/2365 cut-off events. [2023-11-12 02:22:44,910 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2023-11-12 02:22:44,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 2365 events. 1342/2365 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13446 event pairs, 966 based on Foata normal form. 0/1503 useless extension candidates. Maximal degree in co-relation 5088. Up to 1567 conditions per place. [2023-11-12 02:22:44,926 INFO L140 encePairwiseOnDemand]: 712/723 looper letters, 124 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2023-11-12 02:22:44,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 145 transitions, 1063 flow [2023-11-12 02:22:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:22:44,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:22:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1910 transitions. [2023-11-12 02:22:44,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44029506685108344 [2023-11-12 02:22:44,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1910 transitions. [2023-11-12 02:22:44,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1910 transitions. [2023-11-12 02:22:44,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:44,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1910 transitions. [2023-11-12 02:22:44,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.3333333333333) internal successors, (1910), 6 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:44,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 723.0) internal successors, (5061), 7 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:44,949 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 723.0) internal successors, (5061), 7 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:44,950 INFO L175 Difference]: Start difference. First operand has 67 places, 79 transitions, 487 flow. Second operand 6 states and 1910 transitions. [2023-11-12 02:22:44,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 145 transitions, 1063 flow [2023-11-12 02:22:44,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 145 transitions, 1048 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:44,956 INFO L231 Difference]: Finished difference. Result has 73 places, 88 transitions, 625 flow [2023-11-12 02:22:44,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=625, PETRI_PLACES=73, PETRI_TRANSITIONS=88} [2023-11-12 02:22:44,957 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-11-12 02:22:44,957 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 88 transitions, 625 flow [2023-11-12 02:22:44,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 303.6) internal successors, (1518), 5 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:44,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:44,958 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-12 02:22:44,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:45,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:45,169 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:45,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:45,169 INFO L85 PathProgramCache]: Analyzing trace with hash -595639816, now seen corresponding path program 1 times [2023-11-12 02:22:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:45,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498067717] [2023-11-12 02:22:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:45,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:45,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:45,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549055863] [2023-11-12 02:22:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:45,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:45,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:45,193 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:45,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 02:22:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:45,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:22:45,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:45,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:45,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498067717] [2023-11-12 02:22:45,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549055863] [2023-11-12 02:22:45,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549055863] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:45,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:22:45,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-12 02:22:45,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510462319] [2023-11-12 02:22:45,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:45,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:22:45,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:22:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:22:45,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 723 [2023-11-12 02:22:45,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 88 transitions, 625 flow. Second operand has 12 states, 12 states have (on average 312.25) internal successors, (3747), 12 states have internal predecessors, (3747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:45,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:45,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 723 [2023-11-12 02:22:45,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:46,353 INFO L124 PetriNetUnfolderBase]: 1378/2437 cut-off events. [2023-11-12 02:22:46,353 INFO L125 PetriNetUnfolderBase]: For 1249/1249 co-relation queries the response was YES. [2023-11-12 02:22:46,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6100 conditions, 2437 events. 1378/2437 cut-off events. For 1249/1249 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 13957 event pairs, 1089 based on Foata normal form. 30/1605 useless extension candidates. Maximal degree in co-relation 6082. Up to 2364 conditions per place. [2023-11-12 02:22:46,372 INFO L140 encePairwiseOnDemand]: 713/723 looper letters, 43 selfloop transitions, 87 changer transitions 0/130 dead transitions. [2023-11-12 02:22:46,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 130 transitions, 1221 flow [2023-11-12 02:22:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:22:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:22:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3845 transitions. [2023-11-12 02:22:46,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44317657906869523 [2023-11-12 02:22:46,386 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3845 transitions. [2023-11-12 02:22:46,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3845 transitions. [2023-11-12 02:22:46,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:46,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3845 transitions. [2023-11-12 02:22:46,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 320.4166666666667) internal successors, (3845), 12 states have internal predecessors, (3845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:46,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 723.0) internal successors, (9399), 13 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:46,416 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 723.0) internal successors, (9399), 13 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:46,417 INFO L175 Difference]: Start difference. First operand has 73 places, 88 transitions, 625 flow. Second operand 12 states and 3845 transitions. [2023-11-12 02:22:46,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 130 transitions, 1221 flow [2023-11-12 02:22:46,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 1204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:46,428 INFO L231 Difference]: Finished difference. Result has 89 places, 130 transitions, 1214 flow [2023-11-12 02:22:46,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1214, PETRI_PLACES=89, PETRI_TRANSITIONS=130} [2023-11-12 02:22:46,429 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2023-11-12 02:22:46,430 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 130 transitions, 1214 flow [2023-11-12 02:22:46,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 312.25) internal successors, (3747), 12 states have internal predecessors, (3747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:46,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:46,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:46,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:46,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 02:22:46,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:46,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:46,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1056611338, now seen corresponding path program 1 times [2023-11-12 02:22:46,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:46,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966650403] [2023-11-12 02:22:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:46,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:46,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:46,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683215040] [2023-11-12 02:22:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:46,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:46,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:46,654 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:46,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 02:22:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:46,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:46,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:22:46,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:46,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:46,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966650403] [2023-11-12 02:22:46,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:46,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683215040] [2023-11-12 02:22:46,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683215040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:46,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:46,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:46,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141571600] [2023-11-12 02:22:46,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:46,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:46,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:46,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:46,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 723 [2023-11-12 02:22:46,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 130 transitions, 1214 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:46,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:46,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 723 [2023-11-12 02:22:46,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:47,285 INFO L124 PetriNetUnfolderBase]: 1243/2214 cut-off events. [2023-11-12 02:22:47,285 INFO L125 PetriNetUnfolderBase]: For 808/808 co-relation queries the response was YES. [2023-11-12 02:22:47,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5890 conditions, 2214 events. 1243/2214 cut-off events. For 808/808 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12913 event pairs, 474 based on Foata normal form. 0/1494 useless extension candidates. Maximal degree in co-relation 5865. Up to 1235 conditions per place. [2023-11-12 02:22:47,314 INFO L140 encePairwiseOnDemand]: 720/723 looper letters, 143 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2023-11-12 02:22:47,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 147 transitions, 1545 flow [2023-11-12 02:22:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1028 transitions. [2023-11-12 02:22:47,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739511295527893 [2023-11-12 02:22:47,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1028 transitions. [2023-11-12 02:22:47,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1028 transitions. [2023-11-12 02:22:47,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:47,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1028 transitions. [2023-11-12 02:22:47,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:47,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:47,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:47,328 INFO L175 Difference]: Start difference. First operand has 89 places, 130 transitions, 1214 flow. Second operand 3 states and 1028 transitions. [2023-11-12 02:22:47,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 147 transitions, 1545 flow [2023-11-12 02:22:47,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 147 transitions, 1287 flow, removed 78 selfloop flow, removed 5 redundant places. [2023-11-12 02:22:47,342 INFO L231 Difference]: Finished difference. Result has 85 places, 129 transitions, 962 flow [2023-11-12 02:22:47,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=962, PETRI_PLACES=85, PETRI_TRANSITIONS=129} [2023-11-12 02:22:47,343 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2023-11-12 02:22:47,344 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 129 transitions, 962 flow [2023-11-12 02:22:47,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:47,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:47,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:47,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-12 02:22:47,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:47,550 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:47,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:47,551 INFO L85 PathProgramCache]: Analyzing trace with hash 631650899, now seen corresponding path program 1 times [2023-11-12 02:22:47,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:47,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828662062] [2023-11-12 02:22:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:47,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:47,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:47,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696997132] [2023-11-12 02:22:47,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:47,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:47,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:47,570 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:47,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-12 02:22:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:47,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:22:47,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:47,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:47,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:47,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828662062] [2023-11-12 02:22:47,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:47,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696997132] [2023-11-12 02:22:47,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696997132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:47,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:47,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:22:47,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957016091] [2023-11-12 02:22:47,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:47,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:22:47,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:47,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:22:47,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:47,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 723 [2023-11-12 02:22:47,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 129 transitions, 962 flow. Second operand has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:47,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:47,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 723 [2023-11-12 02:22:47,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:48,477 INFO L124 PetriNetUnfolderBase]: 966/1761 cut-off events. [2023-11-12 02:22:48,477 INFO L125 PetriNetUnfolderBase]: For 1687/1687 co-relation queries the response was YES. [2023-11-12 02:22:48,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4905 conditions, 1761 events. 966/1761 cut-off events. For 1687/1687 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9658 event pairs, 705 based on Foata normal form. 3/1328 useless extension candidates. Maximal degree in co-relation 4880. Up to 1469 conditions per place. [2023-11-12 02:22:48,511 INFO L140 encePairwiseOnDemand]: 715/723 looper letters, 128 selfloop transitions, 29 changer transitions 11/168 dead transitions. [2023-11-12 02:22:48,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 168 transitions, 1500 flow [2023-11-12 02:22:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:22:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:22:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1625 transitions. [2023-11-12 02:22:48,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44951590594744123 [2023-11-12 02:22:48,518 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1625 transitions. [2023-11-12 02:22:48,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1625 transitions. [2023-11-12 02:22:48,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:48,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1625 transitions. [2023-11-12 02:22:48,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:48,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 723.0) internal successors, (4338), 6 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:48,532 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 723.0) internal successors, (4338), 6 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:48,532 INFO L175 Difference]: Start difference. First operand has 85 places, 129 transitions, 962 flow. Second operand 5 states and 1625 transitions. [2023-11-12 02:22:48,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 168 transitions, 1500 flow [2023-11-12 02:22:48,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 168 transitions, 1476 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:48,546 INFO L231 Difference]: Finished difference. Result has 89 places, 131 transitions, 1031 flow [2023-11-12 02:22:48,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1031, PETRI_PLACES=89, PETRI_TRANSITIONS=131} [2023-11-12 02:22:48,547 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2023-11-12 02:22:48,547 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 131 transitions, 1031 flow [2023-11-12 02:22:48,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:48,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:48,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:48,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:48,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:48,755 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:48,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:48,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1056611279, now seen corresponding path program 1 times [2023-11-12 02:22:48,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:48,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099727151] [2023-11-12 02:22:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:48,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:48,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:48,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206266225] [2023-11-12 02:22:48,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:48,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:48,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:48,776 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:48,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-12 02:22:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:48,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:48,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:22:48,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:48,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:48,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099727151] [2023-11-12 02:22:48,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:48,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206266225] [2023-11-12 02:22:48,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206266225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:48,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:48,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:48,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653069768] [2023-11-12 02:22:48,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:48,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:48,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:48,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:48,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:48,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 723 [2023-11-12 02:22:48,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 131 transitions, 1031 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:48,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:48,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 723 [2023-11-12 02:22:48,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:49,398 INFO L124 PetriNetUnfolderBase]: 1254/2197 cut-off events. [2023-11-12 02:22:49,398 INFO L125 PetriNetUnfolderBase]: For 1177/1177 co-relation queries the response was YES. [2023-11-12 02:22:49,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6006 conditions, 2197 events. 1254/2197 cut-off events. For 1177/1177 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12227 event pairs, 654 based on Foata normal form. 0/1541 useless extension candidates. Maximal degree in co-relation 5979. Up to 1672 conditions per place. [2023-11-12 02:22:49,412 INFO L140 encePairwiseOnDemand]: 719/723 looper letters, 149 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2023-11-12 02:22:49,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 154 transitions, 1406 flow [2023-11-12 02:22:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1031 transitions. [2023-11-12 02:22:49,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47533425541724295 [2023-11-12 02:22:49,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1031 transitions. [2023-11-12 02:22:49,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1031 transitions. [2023-11-12 02:22:49,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:49,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1031 transitions. [2023-11-12 02:22:49,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.6666666666667) internal successors, (1031), 3 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:49,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:49,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:49,428 INFO L175 Difference]: Start difference. First operand has 89 places, 131 transitions, 1031 flow. Second operand 3 states and 1031 transitions. [2023-11-12 02:22:49,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 154 transitions, 1406 flow [2023-11-12 02:22:49,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 154 transitions, 1353 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:49,444 INFO L231 Difference]: Finished difference. Result has 90 places, 133 transitions, 1005 flow [2023-11-12 02:22:49,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1005, PETRI_PLACES=90, PETRI_TRANSITIONS=133} [2023-11-12 02:22:49,445 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2023-11-12 02:22:49,445 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 133 transitions, 1005 flow [2023-11-12 02:22:49,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:49,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:49,446 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:49,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:49,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:49,652 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:49,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1791125503, now seen corresponding path program 1 times [2023-11-12 02:22:49,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:49,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429989050] [2023-11-12 02:22:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:49,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:49,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:49,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864394325] [2023-11-12 02:22:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:49,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:49,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:49,680 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:49,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-12 02:22:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:49,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:22:49,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:22:49,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:22:50,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:50,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429989050] [2023-11-12 02:22:50,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:50,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864394325] [2023-11-12 02:22:50,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864394325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:50,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:22:50,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-12 02:22:50,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876678829] [2023-11-12 02:22:50,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:50,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:22:50,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:50,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:22:50,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:22:50,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 723 [2023-11-12 02:22:50,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 133 transitions, 1005 flow. Second operand has 11 states, 11 states have (on average 296.72727272727275) internal successors, (3264), 11 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:50,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:50,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 723 [2023-11-12 02:22:50,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:51,309 INFO L124 PetriNetUnfolderBase]: 1755/3059 cut-off events. [2023-11-12 02:22:51,310 INFO L125 PetriNetUnfolderBase]: For 2950/2950 co-relation queries the response was YES. [2023-11-12 02:22:51,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9299 conditions, 3059 events. 1755/3059 cut-off events. For 2950/2950 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17642 event pairs, 963 based on Foata normal form. 66/2408 useless extension candidates. Maximal degree in co-relation 9271. Up to 1425 conditions per place. [2023-11-12 02:22:51,332 INFO L140 encePairwiseOnDemand]: 712/723 looper letters, 206 selfloop transitions, 30 changer transitions 7/243 dead transitions. [2023-11-12 02:22:51,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 243 transitions, 2058 flow [2023-11-12 02:22:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:22:51,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-12 02:22:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3072 transitions. [2023-11-12 02:22:51,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42489626556016596 [2023-11-12 02:22:51,352 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3072 transitions. [2023-11-12 02:22:51,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3072 transitions. [2023-11-12 02:22:51,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:51,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3072 transitions. [2023-11-12 02:22:51,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 307.2) internal successors, (3072), 10 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:51,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 723.0) internal successors, (7953), 11 states have internal predecessors, (7953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:51,381 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 723.0) internal successors, (7953), 11 states have internal predecessors, (7953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:51,382 INFO L175 Difference]: Start difference. First operand has 90 places, 133 transitions, 1005 flow. Second operand 10 states and 3072 transitions. [2023-11-12 02:22:51,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 243 transitions, 2058 flow [2023-11-12 02:22:51,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 243 transitions, 2050 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:51,402 INFO L231 Difference]: Finished difference. Result has 102 places, 138 transitions, 1151 flow [2023-11-12 02:22:51,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1151, PETRI_PLACES=102, PETRI_TRANSITIONS=138} [2023-11-12 02:22:51,403 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2023-11-12 02:22:51,403 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 138 transitions, 1151 flow [2023-11-12 02:22:51,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 296.72727272727275) internal successors, (3264), 11 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:51,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:51,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:51,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:51,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48433fd2-9b93-4f0d-bbf8-cfeec40d8677/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:22:51,616 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:22:51,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:51,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2011583282, now seen corresponding path program 1 times [2023-11-12 02:22:51,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:51,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52533574] [2023-11-12 02:22:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:51,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms