./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:13:04,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:13:04,497 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:13:04,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:13:04,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:13:04,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:13:04,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:13:04,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:13:04,546 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:13:04,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:13:04,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:13:04,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:13:04,553 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:13:04,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:13:04,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:13:04,555 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:13:04,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:13:04,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:13:04,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:13:04,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:13:04,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:13:04,558 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:13:04,558 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:13:04,558 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:13:04,559 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:13:04,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:13:04,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:13:04,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:13:04,561 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:13:04,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:13:04,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:04,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:13:04,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:13:04,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:13:04,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:13:04,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:13:04,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:13:04,564 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:13:04,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:13:04,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:13:04,565 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:13:04,565 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_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2023-11-06 22:13:04,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:13:04,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:13:04,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:13:04,888 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:13:04,888 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:13:04,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/fib_safe-11.i [2023-11-06 22:13:08,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:13:08,416 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:13:08,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/sv-benchmarks/c/pthread/fib_safe-11.i [2023-11-06 22:13:08,448 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/data/52d60d16c/e419e9255df54d64929b749506d4dc01/FLAG72869ad2d [2023-11-06 22:13:08,464 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/data/52d60d16c/e419e9255df54d64929b749506d4dc01 [2023-11-06 22:13:08,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:13:08,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:13:08,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:08,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:13:08,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:13:08,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:08" (1/1) ... [2023-11-06 22:13:08,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5717c6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08, skipping insertion in model container [2023-11-06 22:13:08,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:08" (1/1) ... [2023-11-06 22:13:08,533 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:13:08,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:13:08,900 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:13:08,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:13:09,009 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:13:09,010 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:13:09,018 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:13:09,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09 WrapperNode [2023-11-06 22:13:09,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:09,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:13:09,021 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:13:09,021 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:13:09,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,093 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2023-11-06 22:13:09,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:13:09,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:13:09,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:13:09,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:13:09,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,131 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:13:09,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:13:09,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:13:09,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:13:09,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (1/1) ... [2023-11-06 22:13:09,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:09,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:09,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:13:09,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:13:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 22:13:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 22:13:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 22:13:09,244 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 22:13:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:13:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:13:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:13:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:13:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:13:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:13:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:13:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:13:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:13:09,248 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:13:09,451 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:13:09,452 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:13:09,753 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:13:09,789 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:13:09,789 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:13:09,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:09 BoogieIcfgContainer [2023-11-06 22:13:09,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:13:09,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:13:09,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:13:09,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:13:09,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:08" (1/3) ... [2023-11-06 22:13:09,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b851b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:09, skipping insertion in model container [2023-11-06 22:13:09,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:09" (2/3) ... [2023-11-06 22:13:09,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b851b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:09, skipping insertion in model container [2023-11-06 22:13:09,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:09" (3/3) ... [2023-11-06 22:13:09,808 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2023-11-06 22:13:09,818 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:13:09,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:13:09,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 22:13:09,830 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:13:09,921 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:13:09,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 121 transitions, 250 flow [2023-11-06 22:13:10,017 INFO L124 PetriNetUnfolderBase]: 8/119 cut-off events. [2023-11-06 22:13:10,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:10,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 119 events. 8/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 167 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-06 22:13:10,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 121 transitions, 250 flow [2023-11-06 22:13:10,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 119 transitions, 244 flow [2023-11-06 22:13:10,035 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:13:10,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 119 transitions, 244 flow [2023-11-06 22:13:10,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 119 transitions, 244 flow [2023-11-06 22:13:10,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 119 transitions, 244 flow [2023-11-06 22:13:10,093 INFO L124 PetriNetUnfolderBase]: 8/119 cut-off events. [2023-11-06 22:13:10,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:10,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 119 events. 8/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 169 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-06 22:13:10,099 INFO L119 LiptonReduction]: Number of co-enabled transitions 4318 [2023-11-06 22:13:14,592 INFO L134 LiptonReduction]: Checked pairs total: 3692 [2023-11-06 22:13:14,594 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-11-06 22:13:14,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:13:14,630 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33de9111, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:13:14,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 22:13:14,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:13:14,640 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-06 22:13:14,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:14,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:14,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:13:14,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:14,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash 14534104, now seen corresponding path program 1 times [2023-11-06 22:13:14,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:14,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632144904] [2023-11-06 22:13:14,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:14,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:14,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632144904] [2023-11-06 22:13:14,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632144904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:14,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:14,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:13:14,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090679646] [2023-11-06 22:13:14,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:14,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:14,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:15,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:15,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:13:15,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:15,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:15,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:13:15,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:15,300 INFO L124 PetriNetUnfolderBase]: 583/864 cut-off events. [2023-11-06 22:13:15,300 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:13:15,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 864 events. 583/864 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3606 event pairs, 104 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 1740. Up to 727 conditions per place. [2023-11-06 22:13:15,316 INFO L140 encePairwiseOnDemand]: 231/243 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-11-06 22:13:15,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 161 flow [2023-11-06 22:13:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-06 22:13:15,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49794238683127573 [2023-11-06 22:13:15,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-06 22:13:15,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-06 22:13:15,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:15,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-06 22:13:15,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:15,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:15,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:15,359 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 363 transitions. [2023-11-06 22:13:15,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 161 flow [2023-11-06 22:13:15,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:13:15,365 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 87 flow [2023-11-06 22:13:15,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-11-06 22:13:15,373 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-06 22:13:15,373 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 87 flow [2023-11-06 22:13:15,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:15,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:15,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:13:15,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:13:15,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:15,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash 450559263, now seen corresponding path program 1 times [2023-11-06 22:13:15,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:15,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417100556] [2023-11-06 22:13:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:15,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:15,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:15,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417100556] [2023-11-06 22:13:15,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417100556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:15,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:15,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:13:15,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828563347] [2023-11-06 22:13:15,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:15,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:15,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:15,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:15,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:15,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:13:15,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:15,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:15,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:13:15,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:15,656 INFO L124 PetriNetUnfolderBase]: 489/732 cut-off events. [2023-11-06 22:13:15,656 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-06 22:13:15,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 732 events. 489/732 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2783 event pairs, 317 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 1820. Up to 732 conditions per place. [2023-11-06 22:13:15,664 INFO L140 encePairwiseOnDemand]: 241/243 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-06 22:13:15,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 126 flow [2023-11-06 22:13:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-11-06 22:13:15,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46227709190672156 [2023-11-06 22:13:15,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-11-06 22:13:15,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-11-06 22:13:15,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:15,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-11-06 22:13:15,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:15,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:15,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:15,684 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 87 flow. Second operand 3 states and 337 transitions. [2023-11-06 22:13:15,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 126 flow [2023-11-06 22:13:15,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:15,688 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 76 flow [2023-11-06 22:13:15,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2023-11-06 22:13:15,690 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-06 22:13:15,690 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 76 flow [2023-11-06 22:13:15,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:15,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:15,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:13:15,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:13:15,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:15,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:15,702 INFO L85 PathProgramCache]: Analyzing trace with hash 450559210, now seen corresponding path program 1 times [2023-11-06 22:13:15,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:15,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882270504] [2023-11-06 22:13:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:15,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:15,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:15,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882270504] [2023-11-06 22:13:15,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882270504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:15,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530557703] [2023-11-06 22:13:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:15,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:15,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:15,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:15,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:13:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:15,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:13:15,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:16,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530557703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:16,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:13:16,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-06 22:13:16,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579344876] [2023-11-06 22:13:16,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:16,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:13:16,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:16,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:13:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:13:16,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:13:16,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:16,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:16,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:13:16,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:16,521 INFO L124 PetriNetUnfolderBase]: 1089/1636 cut-off events. [2023-11-06 22:13:16,521 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-06 22:13:16,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3972 conditions, 1636 events. 1089/1636 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7614 event pairs, 92 based on Foata normal form. 0/892 useless extension candidates. Maximal degree in co-relation 3964. Up to 663 conditions per place. [2023-11-06 22:13:16,538 INFO L140 encePairwiseOnDemand]: 235/243 looper letters, 82 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2023-11-06 22:13:16,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 102 transitions, 486 flow [2023-11-06 22:13:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:13:16,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:13:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2023-11-06 22:13:16,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48853615520282184 [2023-11-06 22:13:16,542 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2023-11-06 22:13:16,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2023-11-06 22:13:16,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:16,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2023-11-06 22:13:16,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:16,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:16,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:16,553 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 76 flow. Second operand 7 states and 831 transitions. [2023-11-06 22:13:16,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 102 transitions, 486 flow [2023-11-06 22:13:16,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 102 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:16,557 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 245 flow [2023-11-06 22:13:16,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2023-11-06 22:13:16,560 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-11-06 22:13:16,560 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 245 flow [2023-11-06 22:13:16,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:16,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:16,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:13:16,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:16,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:16,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:16,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash 450559209, now seen corresponding path program 1 times [2023-11-06 22:13:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89029395] [2023-11-06 22:13:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:16,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:16,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:16,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89029395] [2023-11-06 22:13:16,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89029395] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:16,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313497744] [2023-11-06 22:13:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:16,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:16,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:16,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:16,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:13:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:16,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:13:16,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:17,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:17,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313497744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:17,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:13:17,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-06 22:13:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712041767] [2023-11-06 22:13:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:17,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:13:17,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:17,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:13:17,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:13:17,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 243 [2023-11-06 22:13:17,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:17,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:17,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 243 [2023-11-06 22:13:17,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:17,308 INFO L124 PetriNetUnfolderBase]: 895/1334 cut-off events. [2023-11-06 22:13:17,309 INFO L125 PetriNetUnfolderBase]: For 1241/1241 co-relation queries the response was YES. [2023-11-06 22:13:17,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4164 conditions, 1334 events. 895/1334 cut-off events. For 1241/1241 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5851 event pairs, 301 based on Foata normal form. 236/1180 useless extension candidates. Maximal degree in co-relation 4150. Up to 690 conditions per place. [2023-11-06 22:13:17,322 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 38 selfloop transitions, 12 changer transitions 0/50 dead transitions. [2023-11-06 22:13:17,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 363 flow [2023-11-06 22:13:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:13:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:13:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2023-11-06 22:13:17,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46810699588477367 [2023-11-06 22:13:17,325 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2023-11-06 22:13:17,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2023-11-06 22:13:17,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:17,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2023-11-06 22:13:17,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:17,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:17,332 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:17,332 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 245 flow. Second operand 4 states and 455 transitions. [2023-11-06 22:13:17,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 363 flow [2023-11-06 22:13:17,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 319 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-06 22:13:17,349 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 234 flow [2023-11-06 22:13:17,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-11-06 22:13:17,350 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-11-06 22:13:17,350 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 234 flow [2023-11-06 22:13:17,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:17,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:17,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:13:17,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:13:17,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:17,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:17,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1084332809, now seen corresponding path program 1 times [2023-11-06 22:13:17,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:17,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365267229] [2023-11-06 22:13:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:17,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:17,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365267229] [2023-11-06 22:13:17,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365267229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:17,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:17,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:13:17,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794626269] [2023-11-06 22:13:17,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:17,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:17,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:17,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:17,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:17,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:13:17,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:17,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:17,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:13:17,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:17,905 INFO L124 PetriNetUnfolderBase]: 1330/1976 cut-off events. [2023-11-06 22:13:17,905 INFO L125 PetriNetUnfolderBase]: For 3120/3120 co-relation queries the response was YES. [2023-11-06 22:13:17,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6439 conditions, 1976 events. 1330/1976 cut-off events. For 3120/3120 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9249 event pairs, 366 based on Foata normal form. 0/1391 useless extension candidates. Maximal degree in co-relation 6424. Up to 1140 conditions per place. [2023-11-06 22:13:17,924 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 65 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-06 22:13:17,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 67 transitions, 577 flow [2023-11-06 22:13:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-11-06 22:13:17,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773662551440329 [2023-11-06 22:13:17,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-11-06 22:13:17,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-11-06 22:13:17,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:17,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-11-06 22:13:17,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:17,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:17,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:17,932 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 234 flow. Second operand 3 states and 348 transitions. [2023-11-06 22:13:17,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 67 transitions, 577 flow [2023-11-06 22:13:17,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 67 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:17,942 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 247 flow [2023-11-06 22:13:17,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-11-06 22:13:17,945 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-11-06 22:13:17,945 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 247 flow [2023-11-06 22:13:17,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:17,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:17,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:13:17,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:13:17,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:17,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1084332709, now seen corresponding path program 1 times [2023-11-06 22:13:17,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:17,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498247470] [2023-11-06 22:13:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:17,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:18,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:18,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498247470] [2023-11-06 22:13:18,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498247470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:18,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:18,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:13:18,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593654702] [2023-11-06 22:13:18,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:18,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:18,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:18,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:18,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:18,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:13:18,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:18,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:13:18,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:18,287 INFO L124 PetriNetUnfolderBase]: 1040/1548 cut-off events. [2023-11-06 22:13:18,287 INFO L125 PetriNetUnfolderBase]: For 2704/2704 co-relation queries the response was YES. [2023-11-06 22:13:18,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5394 conditions, 1548 events. 1040/1548 cut-off events. For 2704/2704 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6904 event pairs, 160 based on Foata normal form. 69/1277 useless extension candidates. Maximal degree in co-relation 5377. Up to 1140 conditions per place. [2023-11-06 22:13:18,303 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 63 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-06 22:13:18,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 65 transitions, 580 flow [2023-11-06 22:13:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-11-06 22:13:18,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47462277091906724 [2023-11-06 22:13:18,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-11-06 22:13:18,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-11-06 22:13:18,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:18,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-11-06 22:13:18,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,310 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 247 flow. Second operand 3 states and 346 transitions. [2023-11-06 22:13:18,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 65 transitions, 580 flow [2023-11-06 22:13:18,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 65 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:18,317 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 255 flow [2023-11-06 22:13:18,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-11-06 22:13:18,319 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2023-11-06 22:13:18,320 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 255 flow [2023-11-06 22:13:18,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:18,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:13:18,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:13:18,320 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:18,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:18,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1084330372, now seen corresponding path program 1 times [2023-11-06 22:13:18,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:18,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148177385] [2023-11-06 22:13:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:18,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:18,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:18,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148177385] [2023-11-06 22:13:18,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148177385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:18,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:18,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:13:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560827705] [2023-11-06 22:13:18,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:18,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:18,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:18,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:18,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:13:18,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:18,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:13:18,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:18,596 INFO L124 PetriNetUnfolderBase]: 970/1450 cut-off events. [2023-11-06 22:13:18,596 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2023-11-06 22:13:18,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5452 conditions, 1450 events. 970/1450 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6069 event pairs, 339 based on Foata normal form. 84/1255 useless extension candidates. Maximal degree in co-relation 5433. Up to 918 conditions per place. [2023-11-06 22:13:18,612 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 44 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-06 22:13:18,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 415 flow [2023-11-06 22:13:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-11-06 22:13:18,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773662551440329 [2023-11-06 22:13:18,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-11-06 22:13:18,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-11-06 22:13:18,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:18,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-11-06 22:13:18,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,618 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,618 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 255 flow. Second operand 3 states and 348 transitions. [2023-11-06 22:13:18,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 415 flow [2023-11-06 22:13:18,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:13:18,624 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 273 flow [2023-11-06 22:13:18,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-06 22:13:18,625 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-06 22:13:18,625 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 273 flow [2023-11-06 22:13:18,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:18,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:18,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:13:18,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:18,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash -745420921, now seen corresponding path program 1 times [2023-11-06 22:13:18,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:18,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85707991] [2023-11-06 22:13:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:18,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85707991] [2023-11-06 22:13:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85707991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26703963] [2023-11-06 22:13:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:18,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:18,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:18,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:18,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:13:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:18,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:13:18,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:18,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:18,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26703963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:18,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:13:18,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-06 22:13:18,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908491451] [2023-11-06 22:13:18,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:18,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:13:18,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:18,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:13:18,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:13:18,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:13:18,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:18,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:18,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:13:18,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:19,085 INFO L124 PetriNetUnfolderBase]: 835/1250 cut-off events. [2023-11-06 22:13:19,085 INFO L125 PetriNetUnfolderBase]: For 3083/3083 co-relation queries the response was YES. [2023-11-06 22:13:19,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 1250 events. 835/1250 cut-off events. For 3083/3083 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5364 event pairs, 154 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 4900. Up to 865 conditions per place. [2023-11-06 22:13:19,100 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 60 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-06 22:13:19,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 615 flow [2023-11-06 22:13:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:13:19,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:13:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2023-11-06 22:13:19,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619341563786008 [2023-11-06 22:13:19,102 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2023-11-06 22:13:19,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2023-11-06 22:13:19,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:19,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2023-11-06 22:13:19,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:19,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:19,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:19,107 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 273 flow. Second operand 4 states and 449 transitions. [2023-11-06 22:13:19,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 615 flow [2023-11-06 22:13:19,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 604 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:19,112 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 267 flow [2023-11-06 22:13:19,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-11-06 22:13:19,113 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-11-06 22:13:19,114 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 267 flow [2023-11-06 22:13:19,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:19,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:19,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:19,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:19,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:19,320 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:19,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:19,320 INFO L85 PathProgramCache]: Analyzing trace with hash -745420858, now seen corresponding path program 1 times [2023-11-06 22:13:19,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:19,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936227386] [2023-11-06 22:13:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:19,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:19,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:19,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936227386] [2023-11-06 22:13:19,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936227386] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:19,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738845195] [2023-11-06 22:13:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:19,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:19,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:19,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:19,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:13:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:19,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:13:19,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:19,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:19,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738845195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:19,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:13:19,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-06 22:13:19,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823447090] [2023-11-06 22:13:19,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:19,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:13:19,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:19,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:13:19,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:13:19,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 243 [2023-11-06 22:13:19,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:19,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:19,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 243 [2023-11-06 22:13:19,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:20,116 INFO L124 PetriNetUnfolderBase]: 1980/2915 cut-off events. [2023-11-06 22:13:20,116 INFO L125 PetriNetUnfolderBase]: For 7982/7982 co-relation queries the response was YES. [2023-11-06 22:13:20,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11333 conditions, 2915 events. 1980/2915 cut-off events. For 7982/7982 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13676 event pairs, 154 based on Foata normal form. 195/2422 useless extension candidates. Maximal degree in co-relation 11312. Up to 931 conditions per place. [2023-11-06 22:13:20,163 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 141 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2023-11-06 22:13:20,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 149 transitions, 1469 flow [2023-11-06 22:13:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:13:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:13:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 679 transitions. [2023-11-06 22:13:20,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657064471879287 [2023-11-06 22:13:20,167 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 679 transitions. [2023-11-06 22:13:20,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 679 transitions. [2023-11-06 22:13:20,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:20,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 679 transitions. [2023-11-06 22:13:20,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:20,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:20,176 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:20,176 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 267 flow. Second operand 6 states and 679 transitions. [2023-11-06 22:13:20,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 149 transitions, 1469 flow [2023-11-06 22:13:20,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 149 transitions, 1466 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:13:20,187 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 325 flow [2023-11-06 22:13:20,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-06 22:13:20,191 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-11-06 22:13:20,191 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 325 flow [2023-11-06 22:13:20,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:20,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:20,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:20,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:20,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:20,397 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:20,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash -745420821, now seen corresponding path program 1 times [2023-11-06 22:13:20,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:20,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703952873] [2023-11-06 22:13:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:20,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:20,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:20,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703952873] [2023-11-06 22:13:20,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703952873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:20,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:20,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:13:20,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800186394] [2023-11-06 22:13:20,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:20,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:20,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:20,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:20,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:20,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:13:20,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:20,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:20,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:13:20,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:20,779 INFO L124 PetriNetUnfolderBase]: 1510/2250 cut-off events. [2023-11-06 22:13:20,779 INFO L125 PetriNetUnfolderBase]: For 6264/6264 co-relation queries the response was YES. [2023-11-06 22:13:20,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9522 conditions, 2250 events. 1510/2250 cut-off events. For 6264/6264 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10098 event pairs, 1036 based on Foata normal form. 0/2118 useless extension candidates. Maximal degree in co-relation 9498. Up to 2250 conditions per place. [2023-11-06 22:13:20,803 INFO L140 encePairwiseOnDemand]: 241/243 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-06 22:13:20,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 372 flow [2023-11-06 22:13:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-11-06 22:13:20,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2023-11-06 22:13:20,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-11-06 22:13:20,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-11-06 22:13:20,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:20,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-11-06 22:13:20,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:20,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:20,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:20,810 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 325 flow. Second operand 3 states and 333 transitions. [2023-11-06 22:13:20,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 372 flow [2023-11-06 22:13:20,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:20,818 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 296 flow [2023-11-06 22:13:20,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-11-06 22:13:20,819 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-11-06 22:13:20,819 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 296 flow [2023-11-06 22:13:20,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:20,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:20,820 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:20,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:13:20,820 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:20,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:20,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1635550076, now seen corresponding path program 1 times [2023-11-06 22:13:20,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:20,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380766470] [2023-11-06 22:13:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:20,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:20,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380766470] [2023-11-06 22:13:20,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380766470] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024333683] [2023-11-06 22:13:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:20,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:20,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:20,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:20,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:13:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:13:20,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:20,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:20,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024333683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:20,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:13:20,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-11-06 22:13:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166418235] [2023-11-06 22:13:20,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:20,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:13:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:20,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:13:20,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:13:20,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:13:20,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:20,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:20,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:13:20,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:21,357 INFO L124 PetriNetUnfolderBase]: 1631/2426 cut-off events. [2023-11-06 22:13:21,358 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2023-11-06 22:13:21,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10243 conditions, 2426 events. 1631/2426 cut-off events. For 6693/6693 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11054 event pairs, 513 based on Foata normal form. 0/2426 useless extension candidates. Maximal degree in co-relation 10218. Up to 1045 conditions per place. [2023-11-06 22:13:21,386 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 56 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-11-06 22:13:21,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 616 flow [2023-11-06 22:13:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:13:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:13:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 564 transitions. [2023-11-06 22:13:21,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641975308641975 [2023-11-06 22:13:21,389 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 564 transitions. [2023-11-06 22:13:21,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 564 transitions. [2023-11-06 22:13:21,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:21,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 564 transitions. [2023-11-06 22:13:21,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:21,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:21,397 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:21,397 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 296 flow. Second operand 5 states and 564 transitions. [2023-11-06 22:13:21,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 616 flow [2023-11-06 22:13:21,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:21,407 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 319 flow [2023-11-06 22:13:21,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-11-06 22:13:21,409 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-11-06 22:13:21,409 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 319 flow [2023-11-06 22:13:21,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:21,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:21,410 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-06 22:13:21,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:13:21,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:21,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:21,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash 838597208, now seen corresponding path program 2 times [2023-11-06 22:13:21,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:21,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354286862] [2023-11-06 22:13:21,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:21,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:21,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354286862] [2023-11-06 22:13:21,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354286862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018223669] [2023-11-06 22:13:21,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:21,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:21,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:21,735 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:21,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:13:21,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:13:21,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:21,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:13:21,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:21,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:22,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018223669] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:22,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:13:22,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 22:13:22,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285177580] [2023-11-06 22:13:22,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:22,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:13:22,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:22,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:13:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:13:22,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:13:22,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 319 flow. Second operand has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:22,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:22,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:13:22,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:23,018 INFO L124 PetriNetUnfolderBase]: 2623/3926 cut-off events. [2023-11-06 22:13:23,018 INFO L125 PetriNetUnfolderBase]: For 16558/16558 co-relation queries the response was YES. [2023-11-06 22:13:23,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17683 conditions, 3926 events. 2623/3926 cut-off events. For 16558/16558 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18931 event pairs, 219 based on Foata normal form. 496/4422 useless extension candidates. Maximal degree in co-relation 17656. Up to 1786 conditions per place. [2023-11-06 22:13:23,060 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 152 selfloop transitions, 31 changer transitions 0/183 dead transitions. [2023-11-06 22:13:23,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 183 transitions, 1578 flow [2023-11-06 22:13:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:13:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:13:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1371 transitions. [2023-11-06 22:13:23,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47016460905349794 [2023-11-06 22:13:23,066 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1371 transitions. [2023-11-06 22:13:23,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1371 transitions. [2023-11-06 22:13:23,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:23,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1371 transitions. [2023-11-06 22:13:23,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.25) internal successors, (1371), 12 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:23,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 243.0) internal successors, (3159), 13 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:23,079 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 243.0) internal successors, (3159), 13 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:23,079 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 319 flow. Second operand 12 states and 1371 transitions. [2023-11-06 22:13:23,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 183 transitions, 1578 flow [2023-11-06 22:13:23,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 183 transitions, 1541 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-06 22:13:23,098 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 648 flow [2023-11-06 22:13:23,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=648, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-11-06 22:13:23,101 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2023-11-06 22:13:23,101 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 648 flow [2023-11-06 22:13:23,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:23,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:23,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:23,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 22:13:23,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:13:23,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:23,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:23,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1635550116, now seen corresponding path program 1 times [2023-11-06 22:13:23,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:23,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530785049] [2023-11-06 22:13:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:23,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:23,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:23,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530785049] [2023-11-06 22:13:23,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530785049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:23,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401095434] [2023-11-06 22:13:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:23,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:23,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:23,419 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:23,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:13:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:13:23,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:23,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:23,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401095434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:23,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:13:23,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-06 22:13:23,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557201627] [2023-11-06 22:13:23,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:23,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:13:23,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:23,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:13:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:23,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:13:23,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 648 flow. Second operand has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:23,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:23,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:13:23,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:24,656 INFO L124 PetriNetUnfolderBase]: 3415/5114 cut-off events. [2023-11-06 22:13:24,656 INFO L125 PetriNetUnfolderBase]: For 33646/33646 co-relation queries the response was YES. [2023-11-06 22:13:24,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26208 conditions, 5114 events. 3415/5114 cut-off events. For 33646/33646 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 26753 event pairs, 274 based on Foata normal form. 264/5378 useless extension candidates. Maximal degree in co-relation 26175. Up to 3566 conditions per place. [2023-11-06 22:13:24,720 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 122 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2023-11-06 22:13:24,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 143 transitions, 1494 flow [2023-11-06 22:13:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:13:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:13:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 907 transitions. [2023-11-06 22:13:24,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46656378600823045 [2023-11-06 22:13:24,725 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 907 transitions. [2023-11-06 22:13:24,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 907 transitions. [2023-11-06 22:13:24,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:24,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 907 transitions. [2023-11-06 22:13:24,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.375) internal successors, (907), 8 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:24,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 243.0) internal successors, (2187), 9 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:24,734 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 243.0) internal successors, (2187), 9 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:24,734 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 648 flow. Second operand 8 states and 907 transitions. [2023-11-06 22:13:24,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 143 transitions, 1494 flow [2023-11-06 22:13:24,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 143 transitions, 1418 flow, removed 35 selfloop flow, removed 2 redundant places. [2023-11-06 22:13:24,805 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 832 flow [2023-11-06 22:13:24,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=832, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2023-11-06 22:13:24,806 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2023-11-06 22:13:24,807 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 832 flow [2023-11-06 22:13:24,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:24,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:24,808 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:24,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:25,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:25,014 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:25,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:25,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1850293404, now seen corresponding path program 2 times [2023-11-06 22:13:25,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:25,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636631566] [2023-11-06 22:13:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:25,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:25,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:25,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636631566] [2023-11-06 22:13:25,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636631566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:25,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423936624] [2023-11-06 22:13:25,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:25,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:25,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:25,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:25,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:13:25,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:13:25,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:25,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:13:25,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:25,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:25,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423936624] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:25,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:13:25,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 22:13:25,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338135035] [2023-11-06 22:13:25,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:25,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:13:25,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:25,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:13:25,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:13:25,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 243 [2023-11-06 22:13:25,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 832 flow. Second operand has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:25,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:25,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 243 [2023-11-06 22:13:25,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:27,854 INFO L124 PetriNetUnfolderBase]: 7087/10586 cut-off events. [2023-11-06 22:13:27,854 INFO L125 PetriNetUnfolderBase]: For 124460/124460 co-relation queries the response was YES. [2023-11-06 22:13:27,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56235 conditions, 10586 events. 7087/10586 cut-off events. For 124460/124460 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 58393 event pairs, 343 based on Foata normal form. 900/11486 useless extension candidates. Maximal degree in co-relation 56197. Up to 3151 conditions per place. [2023-11-06 22:13:27,991 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 654 selfloop transitions, 11 changer transitions 0/665 dead transitions. [2023-11-06 22:13:27,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 665 transitions, 9744 flow [2023-11-06 22:13:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:13:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:13:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1333 transitions. [2023-11-06 22:13:27,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45713305898491086 [2023-11-06 22:13:27,997 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1333 transitions. [2023-11-06 22:13:27,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1333 transitions. [2023-11-06 22:13:27,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:27,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1333 transitions. [2023-11-06 22:13:28,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.08333333333333) internal successors, (1333), 12 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:28,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 243.0) internal successors, (3159), 13 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:28,010 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 243.0) internal successors, (3159), 13 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:28,010 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 832 flow. Second operand 12 states and 1333 transitions. [2023-11-06 22:13:28,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 665 transitions, 9744 flow [2023-11-06 22:13:28,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 665 transitions, 9160 flow, removed 264 selfloop flow, removed 2 redundant places. [2023-11-06 22:13:28,132 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 862 flow [2023-11-06 22:13:28,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=862, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-11-06 22:13:28,133 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2023-11-06 22:13:28,133 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 862 flow [2023-11-06 22:13:28,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:28,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:28,135 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:28,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-06 22:13:28,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:28,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:28,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1572221284, now seen corresponding path program 1 times [2023-11-06 22:13:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684856154] [2023-11-06 22:13:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:28,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684856154] [2023-11-06 22:13:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684856154] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:28,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030136442] [2023-11-06 22:13:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:28,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:28,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:28,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:28,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:13:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:13:28,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:28,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030136442] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:28,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:13:28,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 22:13:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178389338] [2023-11-06 22:13:28,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:28,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:13:28,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:28,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:13:28,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:13:28,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:13:28,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 862 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:28,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:28,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:13:28,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:31,911 INFO L124 PetriNetUnfolderBase]: 10457/15799 cut-off events. [2023-11-06 22:13:31,911 INFO L125 PetriNetUnfolderBase]: For 163320/163320 co-relation queries the response was YES. [2023-11-06 22:13:32,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85058 conditions, 15799 events. 10457/15799 cut-off events. For 163320/163320 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 97710 event pairs, 482 based on Foata normal form. 727/16526 useless extension candidates. Maximal degree in co-relation 85014. Up to 5979 conditions per place. [2023-11-06 22:13:32,104 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 264 selfloop transitions, 73 changer transitions 0/337 dead transitions. [2023-11-06 22:13:32,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 337 transitions, 3829 flow [2023-11-06 22:13:32,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:13:32,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:13:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1696 transitions. [2023-11-06 22:13:32,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652949245541838 [2023-11-06 22:13:32,111 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1696 transitions. [2023-11-06 22:13:32,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1696 transitions. [2023-11-06 22:13:32,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:32,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1696 transitions. [2023-11-06 22:13:32,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 113.06666666666666) internal successors, (1696), 15 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:32,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 243.0) internal successors, (3888), 16 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:32,126 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 243.0) internal successors, (3888), 16 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:32,126 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 862 flow. Second operand 15 states and 1696 transitions. [2023-11-06 22:13:32,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 337 transitions, 3829 flow [2023-11-06 22:13:32,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 337 transitions, 3541 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-11-06 22:13:32,604 INFO L231 Difference]: Finished difference. Result has 106 places, 116 transitions, 1594 flow [2023-11-06 22:13:32,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1594, PETRI_PLACES=106, PETRI_TRANSITIONS=116} [2023-11-06 22:13:32,605 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2023-11-06 22:13:32,605 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 116 transitions, 1594 flow [2023-11-06 22:13:32,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:32,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:32,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:32,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-06 22:13:32,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:13:32,812 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:32,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1963878234, now seen corresponding path program 1 times [2023-11-06 22:13:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:32,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887273264] [2023-11-06 22:13:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:32,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:32,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887273264] [2023-11-06 22:13:32,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887273264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260791452] [2023-11-06 22:13:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:32,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:32,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:32,929 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:32,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:13:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:33,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:13:33,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:33,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:33,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260791452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:33,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:13:33,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 22:13:33,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559755842] [2023-11-06 22:13:33,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:33,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:13:33,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:33,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:13:33,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:13:33,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:13:33,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 116 transitions, 1594 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:33,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:33,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:13:33,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:38,230 INFO L124 PetriNetUnfolderBase]: 15563/23656 cut-off events. [2023-11-06 22:13:38,230 INFO L125 PetriNetUnfolderBase]: For 334361/334361 co-relation queries the response was YES. [2023-11-06 22:13:38,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142413 conditions, 23656 events. 15563/23656 cut-off events. For 334361/334361 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 158673 event pairs, 793 based on Foata normal form. 727/24383 useless extension candidates. Maximal degree in co-relation 142362. Up to 10323 conditions per place. [2023-11-06 22:13:38,593 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 346 selfloop transitions, 108 changer transitions 0/454 dead transitions. [2023-11-06 22:13:38,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 454 transitions, 5481 flow [2023-11-06 22:13:38,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:13:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:13:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2027 transitions. [2023-11-06 22:13:38,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634202103337906 [2023-11-06 22:13:38,603 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2027 transitions. [2023-11-06 22:13:38,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2027 transitions. [2023-11-06 22:13:38,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:38,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2027 transitions. [2023-11-06 22:13:38,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.61111111111111) internal successors, (2027), 18 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:38,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 243.0) internal successors, (4617), 19 states have internal predecessors, (4617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:38,624 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 243.0) internal successors, (4617), 19 states have internal predecessors, (4617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:38,625 INFO L175 Difference]: Start difference. First operand has 106 places, 116 transitions, 1594 flow. Second operand 18 states and 2027 transitions. [2023-11-06 22:13:38,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 454 transitions, 5481 flow [2023-11-06 22:13:40,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 454 transitions, 5175 flow, removed 144 selfloop flow, removed 6 redundant places. [2023-11-06 22:13:40,933 INFO L231 Difference]: Finished difference. Result has 124 places, 180 transitions, 2668 flow [2023-11-06 22:13:40,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2668, PETRI_PLACES=124, PETRI_TRANSITIONS=180} [2023-11-06 22:13:40,934 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2023-11-06 22:13:40,935 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 180 transitions, 2668 flow [2023-11-06 22:13:40,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:40,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:40,935 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:40,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:41,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:13:41,141 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:41,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:41,141 INFO L85 PathProgramCache]: Analyzing trace with hash -756222374, now seen corresponding path program 2 times [2023-11-06 22:13:41,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:41,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374688474] [2023-11-06 22:13:41,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:41,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:41,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:41,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374688474] [2023-11-06 22:13:41,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374688474] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:41,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943495296] [2023-11-06 22:13:41,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:41,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:41,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:41,306 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:41,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:13:41,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:13:41,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:41,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:13:41,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:41,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:41,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:41,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943495296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:41,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:13:41,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-06 22:13:41,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895391886] [2023-11-06 22:13:41,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:41,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:13:41,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:41,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:13:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:13:41,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:13:41,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 180 transitions, 2668 flow. Second operand has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:41,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:41,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:13:41,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:48,301 INFO L124 PetriNetUnfolderBase]: 20735/31632 cut-off events. [2023-11-06 22:13:48,302 INFO L125 PetriNetUnfolderBase]: For 595743/595743 co-relation queries the response was YES. [2023-11-06 22:13:48,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200734 conditions, 31632 events. 20735/31632 cut-off events. For 595743/595743 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 222407 event pairs, 1338 based on Foata normal form. 944/32576 useless extension candidates. Maximal degree in co-relation 200677. Up to 12839 conditions per place. [2023-11-06 22:13:49,028 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 352 selfloop transitions, 151 changer transitions 0/503 dead transitions. [2023-11-06 22:13:49,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 503 transitions, 6558 flow [2023-11-06 22:13:49,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:13:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 22:13:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1925 transitions. [2023-11-06 22:13:49,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598886468167516 [2023-11-06 22:13:49,035 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1925 transitions. [2023-11-06 22:13:49,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1925 transitions. [2023-11-06 22:13:49,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:49,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1925 transitions. [2023-11-06 22:13:49,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 113.23529411764706) internal successors, (1925), 17 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:49,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 243.0) internal successors, (4374), 18 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:49,052 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 243.0) internal successors, (4374), 18 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:49,053 INFO L175 Difference]: Start difference. First operand has 124 places, 180 transitions, 2668 flow. Second operand 17 states and 1925 transitions. [2023-11-06 22:13:49,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 503 transitions, 6558 flow [2023-11-06 22:13:54,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 503 transitions, 6315 flow, removed 117 selfloop flow, removed 3 redundant places. [2023-11-06 22:13:54,898 INFO L231 Difference]: Finished difference. Result has 145 places, 240 transitions, 3972 flow [2023-11-06 22:13:54,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3972, PETRI_PLACES=145, PETRI_TRANSITIONS=240} [2023-11-06 22:13:54,898 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2023-11-06 22:13:54,898 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 240 transitions, 3972 flow [2023-11-06 22:13:54,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:54,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:54,899 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:54,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:55,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:13:55,100 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:13:55,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:55,100 INFO L85 PathProgramCache]: Analyzing trace with hash -760869000, now seen corresponding path program 2 times [2023-11-06 22:13:55,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:55,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141766853] [2023-11-06 22:13:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:55,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:55,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:55,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141766853] [2023-11-06 22:13:55,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141766853] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:55,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629393698] [2023-11-06 22:13:55,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:55,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:55,251 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:55,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:13:55,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:13:55,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:55,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:13:55,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:55,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:55,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629393698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:55,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:13:55,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-06 22:13:55,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083879755] [2023-11-06 22:13:55,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:55,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:13:55,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:55,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:13:55,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:13:55,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:13:55,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 240 transitions, 3972 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:55,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:55,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:13:55,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:04,599 INFO L124 PetriNetUnfolderBase]: 25097/38345 cut-off events. [2023-11-06 22:14:04,599 INFO L125 PetriNetUnfolderBase]: For 1065511/1065511 co-relation queries the response was YES. [2023-11-06 22:14:04,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262382 conditions, 38345 events. 25097/38345 cut-off events. For 1065511/1065511 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 275726 event pairs, 1422 based on Foata normal form. 1141/39486 useless extension candidates. Maximal degree in co-relation 262316. Up to 11489 conditions per place. [2023-11-06 22:14:05,172 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 397 selfloop transitions, 236 changer transitions 0/633 dead transitions. [2023-11-06 22:14:05,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 633 transitions, 8833 flow [2023-11-06 22:14:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:14:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 22:14:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2373 transitions. [2023-11-06 22:14:05,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2023-11-06 22:14:05,178 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2373 transitions. [2023-11-06 22:14:05,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2373 transitions. [2023-11-06 22:14:05,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:05,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2373 transitions. [2023-11-06 22:14:05,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 113.0) internal successors, (2373), 21 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:05,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 243.0) internal successors, (5346), 22 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:05,192 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 243.0) internal successors, (5346), 22 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:05,192 INFO L175 Difference]: Start difference. First operand has 145 places, 240 transitions, 3972 flow. Second operand 21 states and 2373 transitions. [2023-11-06 22:14:05,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 633 transitions, 8833 flow [2023-11-06 22:14:18,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 633 transitions, 8459 flow, removed 172 selfloop flow, removed 6 redundant places. [2023-11-06 22:14:18,130 INFO L231 Difference]: Finished difference. Result has 168 places, 304 transitions, 5586 flow [2023-11-06 22:14:18,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=3754, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5586, PETRI_PLACES=168, PETRI_TRANSITIONS=304} [2023-11-06 22:14:18,131 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2023-11-06 22:14:18,131 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 304 transitions, 5586 flow [2023-11-06 22:14:18,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:18,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:18,132 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:18,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-06 22:14:18,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:14:18,333 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:14:18,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash -932637958, now seen corresponding path program 3 times [2023-11-06 22:14:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:18,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017980969] [2023-11-06 22:14:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:18,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:18,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017980969] [2023-11-06 22:14:18,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017980969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:14:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990423117] [2023-11-06 22:14:18,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:14:18,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:18,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:18,500 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:18,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:14:18,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:14:18,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:18,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:14:18,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:18,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:14:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:18,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990423117] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:14:18,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:14:18,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-06 22:14:18,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882470134] [2023-11-06 22:14:18,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:14:18,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:14:18,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:18,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:14:18,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:14:18,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:14:18,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 304 transitions, 5586 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:18,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:18,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:14:18,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:34,012 INFO L124 PetriNetUnfolderBase]: 35399/54110 cut-off events. [2023-11-06 22:14:34,012 INFO L125 PetriNetUnfolderBase]: For 1793380/1793380 co-relation queries the response was YES. [2023-11-06 22:14:34,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392542 conditions, 54110 events. 35399/54110 cut-off events. For 1793380/1793380 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 408874 event pairs, 1991 based on Foata normal form. 1325/55435 useless extension candidates. Maximal degree in co-relation 392468. Up to 17392 conditions per place. [2023-11-06 22:14:34,975 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 548 selfloop transitions, 320 changer transitions 0/868 dead transitions. [2023-11-06 22:14:34,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 868 transitions, 13147 flow [2023-11-06 22:14:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:14:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-06 22:14:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3036 transitions. [2023-11-06 22:14:34,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273433927754914 [2023-11-06 22:14:34,984 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3036 transitions. [2023-11-06 22:14:34,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3036 transitions. [2023-11-06 22:14:34,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:34,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3036 transitions. [2023-11-06 22:14:34,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.44444444444444) internal successors, (3036), 27 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:35,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 243.0) internal successors, (6804), 28 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:35,007 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 243.0) internal successors, (6804), 28 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:35,007 INFO L175 Difference]: Start difference. First operand has 168 places, 304 transitions, 5586 flow. Second operand 27 states and 3036 transitions. [2023-11-06 22:14:35,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 868 transitions, 13147 flow [2023-11-06 22:15:07,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 868 transitions, 12678 flow, removed 224 selfloop flow, removed 4 redundant places. [2023-11-06 22:15:07,563 INFO L231 Difference]: Finished difference. Result has 199 places, 435 transitions, 8690 flow [2023-11-06 22:15:07,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=5299, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=8690, PETRI_PLACES=199, PETRI_TRANSITIONS=435} [2023-11-06 22:15:07,564 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2023-11-06 22:15:07,564 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 435 transitions, 8690 flow [2023-11-06 22:15:07,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:07,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:15:07,565 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:07,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-06 22:15:07,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:07,771 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:15:07,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1796464920, now seen corresponding path program 4 times [2023-11-06 22:15:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:07,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721580873] [2023-11-06 22:15:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:07,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:07,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721580873] [2023-11-06 22:15:07,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721580873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:07,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708391011] [2023-11-06 22:15:07,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:15:07,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:07,905 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:07,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd413951-a64e-4c8d-bca0-c38814802f31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:15:08,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:15:08,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:15:08,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:15:08,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:08,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:15:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:08,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708391011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:15:08,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:15:08,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-06 22:15:08,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039366356] [2023-11-06 22:15:08,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:15:08,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:15:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:08,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:15:08,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:15:08,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:15:08,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 435 transitions, 8690 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:08,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:15:08,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:15:08,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand