./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/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_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/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_83384dd0-bb59-4b2b-a392-c94ed5386eb1/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 e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:13,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:13,237 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:07:13,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:13,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:13,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:13,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:13,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:13,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:13,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:13,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:13,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:13,287 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:13,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:13,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:13,289 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:13,289 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:13,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:13,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:13,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:13,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:13,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:13,292 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:07:13,293 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:07:13,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:13,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:13,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:13,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:13,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:13,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:13,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:13,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:13,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:13,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:13,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:13,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:13,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:13,298 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:13,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:13,299 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:13,299 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:13,300 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_83384dd0-bb59-4b2b-a392-c94ed5386eb1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 [2023-11-06 23:07:13,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:13,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:13,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:13,673 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:13,674 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:13,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/fib_safe-12.i [2023-11-06 23:07:16,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:17,200 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:17,200 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/sv-benchmarks/c/pthread/fib_safe-12.i [2023-11-06 23:07:17,223 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/data/1950d44d0/32d0dc7230e94eba9f7ad3edb64d899f/FLAG94772bcef [2023-11-06 23:07:17,242 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/data/1950d44d0/32d0dc7230e94eba9f7ad3edb64d899f [2023-11-06 23:07:17,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:17,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:17,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:17,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:17,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:17,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26df7238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17, skipping insertion in model container [2023-11-06 23:07:17,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,327 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:17,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:17,770 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:17,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:17,890 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:07:17,890 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:07:17,896 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:17,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17 WrapperNode [2023-11-06 23:07:17,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:17,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:17,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:17,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:17,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,959 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2023-11-06 23:07:17,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:17,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:17,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:17,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:17,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:17,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:17,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:17,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:17,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:18,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (1/1) ... [2023-11-06 23:07:18,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:18,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:18,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:18,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:18,092 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 23:07:18,092 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 23:07:18,092 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 23:07:18,092 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 23:07:18,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:07:18,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:07:18,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:18,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:07:18,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:07:18,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:18,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:07:18,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:18,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:18,096 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:07:18,238 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:18,240 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:18,515 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:18,557 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:18,557 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 23:07:18,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:18 BoogieIcfgContainer [2023-11-06 23:07:18,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:18,567 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:18,567 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:18,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:18,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:17" (1/3) ... [2023-11-06 23:07:18,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481ee0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:18, skipping insertion in model container [2023-11-06 23:07:18,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:17" (2/3) ... [2023-11-06 23:07:18,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481ee0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:18, skipping insertion in model container [2023-11-06 23:07:18,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:18" (3/3) ... [2023-11-06 23:07:18,577 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-12.i [2023-11-06 23:07:18,586 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:07:18,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:18,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 23:07:18,596 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:07:18,671 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:07:18,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 121 transitions, 250 flow [2023-11-06 23:07:18,795 INFO L124 PetriNetUnfolderBase]: 8/119 cut-off events. [2023-11-06 23:07:18,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:18,802 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 23:07:18,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 121 transitions, 250 flow [2023-11-06 23:07:18,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 119 transitions, 244 flow [2023-11-06 23:07:18,812 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:18,822 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 119 transitions, 244 flow [2023-11-06 23:07:18,825 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 119 transitions, 244 flow [2023-11-06 23:07:18,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 119 transitions, 244 flow [2023-11-06 23:07:18,859 INFO L124 PetriNetUnfolderBase]: 8/119 cut-off events. [2023-11-06 23:07:18,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:18,862 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 23:07:18,866 INFO L119 LiptonReduction]: Number of co-enabled transitions 4318 [2023-11-06 23:07:23,299 INFO L134 LiptonReduction]: Checked pairs total: 3692 [2023-11-06 23:07:23,299 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-11-06 23:07:23,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:23,323 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;@608c949d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:23,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 23:07:23,327 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:23,327 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-06 23:07:23,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:23,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:23,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:07:23,328 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 23:07:23,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash 14534104, now seen corresponding path program 1 times [2023-11-06 23:07:23,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:23,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859419703] [2023-11-06 23:07:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:23,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:23,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:23,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859419703] [2023-11-06 23:07:23,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859419703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:23,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:23,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:23,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129600736] [2023-11-06 23:07:23,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:23,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:23,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:23,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:23,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:23,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 23:07:23,773 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 23:07:23,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:23,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 23:07:23,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:24,058 INFO L124 PetriNetUnfolderBase]: 583/864 cut-off events. [2023-11-06 23:07:24,058 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 23:07:24,065 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 23:07:24,077 INFO L140 encePairwiseOnDemand]: 231/243 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-11-06 23:07:24,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 161 flow [2023-11-06 23:07:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:24,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-06 23:07:24,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49794238683127573 [2023-11-06 23:07:24,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-06 23:07:24,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-06 23:07:24,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:24,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-06 23:07:24,118 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 23:07:24,123 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 23:07:24,125 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 23:07:24,127 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 363 transitions. [2023-11-06 23:07:24,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 161 flow [2023-11-06 23:07:24,131 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 23:07:24,134 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 87 flow [2023-11-06 23:07:24,136 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 23:07:24,142 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-06 23:07:24,142 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 87 flow [2023-11-06 23:07:24,143 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 23:07:24,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:24,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:07:24,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:07:24,144 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 23:07:24,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:24,146 INFO L85 PathProgramCache]: Analyzing trace with hash 450559263, now seen corresponding path program 1 times [2023-11-06 23:07:24,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:24,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750823798] [2023-11-06 23:07:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:24,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:24,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:24,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750823798] [2023-11-06 23:07:24,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750823798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:24,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:24,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:24,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620931405] [2023-11-06 23:07:24,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:24,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:24,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:24,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:24,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:24,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 23:07:24,316 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 23:07:24,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:24,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 23:07:24,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:24,442 INFO L124 PetriNetUnfolderBase]: 489/732 cut-off events. [2023-11-06 23:07:24,442 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-06 23:07:24,443 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 23:07:24,450 INFO L140 encePairwiseOnDemand]: 241/243 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-06 23:07:24,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 126 flow [2023-11-06 23:07:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-11-06 23:07:24,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46227709190672156 [2023-11-06 23:07:24,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-11-06 23:07:24,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-11-06 23:07:24,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:24,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-11-06 23:07:24,457 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 23:07:24,462 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 23:07:24,466 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 23:07:24,466 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 87 flow. Second operand 3 states and 337 transitions. [2023-11-06 23:07:24,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 126 flow [2023-11-06 23:07:24,469 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 23:07:24,470 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 76 flow [2023-11-06 23:07:24,471 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 23:07:24,473 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-06 23:07:24,473 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 76 flow [2023-11-06 23:07:24,473 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 23:07:24,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:24,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:07:24,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:07:24,481 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 23:07:24,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:24,484 INFO L85 PathProgramCache]: Analyzing trace with hash 450559210, now seen corresponding path program 1 times [2023-11-06 23:07:24,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:24,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941148596] [2023-11-06 23:07:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:24,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941148596] [2023-11-06 23:07:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941148596] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204719698] [2023-11-06 23:07:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:24,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:24,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:24,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:24,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:07:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:24,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:24,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:24,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:24,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204719698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:24,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:24,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-06 23:07:24,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970311602] [2023-11-06 23:07:24,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:24,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:07:24,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:24,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:07:24,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:07:24,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 23:07:24,970 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 23:07:24,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:24,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 23:07:24,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:25,385 INFO L124 PetriNetUnfolderBase]: 1089/1636 cut-off events. [2023-11-06 23:07:25,385 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-06 23:07:25,388 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 23:07:25,402 INFO L140 encePairwiseOnDemand]: 235/243 looper letters, 82 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2023-11-06 23:07:25,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 102 transitions, 486 flow [2023-11-06 23:07:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:07:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2023-11-06 23:07:25,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48853615520282184 [2023-11-06 23:07:25,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2023-11-06 23:07:25,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2023-11-06 23:07:25,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:25,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2023-11-06 23:07:25,410 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 23:07:25,415 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 23:07:25,417 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 23:07:25,417 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 76 flow. Second operand 7 states and 831 transitions. [2023-11-06 23:07:25,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 102 transitions, 486 flow [2023-11-06 23:07:25,419 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 23:07:25,421 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 245 flow [2023-11-06 23:07:25,421 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 23:07:25,422 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-11-06 23:07:25,422 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 245 flow [2023-11-06 23:07:25,423 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 23:07:25,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:25,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:07:25,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:25,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 23:07:25,637 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 23:07:25,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash 450559209, now seen corresponding path program 1 times [2023-11-06 23:07:25,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372531778] [2023-11-06 23:07:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:25,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:25,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:25,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372531778] [2023-11-06 23:07:25,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372531778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:25,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522730510] [2023-11-06 23:07:25,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:25,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:25,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:25,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:25,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:07:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:25,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:25,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:25,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522730510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:25,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:07:25,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-06 23:07:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175315660] [2023-11-06 23:07:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:25,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:25,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:25,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:25,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 243 [2023-11-06 23:07:25,915 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 23:07:25,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:25,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 243 [2023-11-06 23:07:25,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:26,138 INFO L124 PetriNetUnfolderBase]: 895/1334 cut-off events. [2023-11-06 23:07:26,139 INFO L125 PetriNetUnfolderBase]: For 1241/1241 co-relation queries the response was YES. [2023-11-06 23:07:26,143 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 23:07:26,154 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 38 selfloop transitions, 12 changer transitions 0/50 dead transitions. [2023-11-06 23:07:26,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 363 flow [2023-11-06 23:07:26,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:07:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2023-11-06 23:07:26,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46810699588477367 [2023-11-06 23:07:26,158 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2023-11-06 23:07:26,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2023-11-06 23:07:26,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:26,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2023-11-06 23:07:26,164 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 23:07:26,167 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 23:07:26,168 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 23:07:26,169 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 245 flow. Second operand 4 states and 455 transitions. [2023-11-06 23:07:26,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 363 flow [2023-11-06 23:07:26,190 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 23:07:26,192 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 234 flow [2023-11-06 23:07:26,192 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 23:07:26,196 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-11-06 23:07:26,196 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 234 flow [2023-11-06 23:07:26,197 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 23:07:26,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:26,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:07:26,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:26,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:26,409 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 23:07:26,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:26,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1084332809, now seen corresponding path program 1 times [2023-11-06 23:07:26,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:26,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331940002] [2023-11-06 23:07:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:26,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:26,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:26,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331940002] [2023-11-06 23:07:26,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331940002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:26,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:26,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:26,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685461492] [2023-11-06 23:07:26,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:26,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:26,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:26,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:26,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:26,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 23:07:26,474 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 23:07:26,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:26,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 23:07:26,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:26,755 INFO L124 PetriNetUnfolderBase]: 1330/1976 cut-off events. [2023-11-06 23:07:26,755 INFO L125 PetriNetUnfolderBase]: For 3120/3120 co-relation queries the response was YES. [2023-11-06 23:07:26,760 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 23:07:26,778 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 65 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-06 23:07:26,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 67 transitions, 577 flow [2023-11-06 23:07:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:26,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:26,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-11-06 23:07:26,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773662551440329 [2023-11-06 23:07:26,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-11-06 23:07:26,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-11-06 23:07:26,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:26,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-11-06 23:07:26,783 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 23:07:26,786 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 23:07:26,787 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 23:07:26,787 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 234 flow. Second operand 3 states and 348 transitions. [2023-11-06 23:07:26,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 67 transitions, 577 flow [2023-11-06 23:07:26,794 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 23:07:26,796 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 247 flow [2023-11-06 23:07:26,797 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 23:07:26,801 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-11-06 23:07:26,801 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 247 flow [2023-11-06 23:07:26,804 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 23:07:26,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:26,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:07:26,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:07:26,807 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 23:07:26,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1084332709, now seen corresponding path program 1 times [2023-11-06 23:07:26,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:26,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786336021] [2023-11-06 23:07:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:26,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:26,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:26,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786336021] [2023-11-06 23:07:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786336021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:26,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:26,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:26,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455549831] [2023-11-06 23:07:26,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:26,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:26,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:26,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:26,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 23:07:26,895 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 23:07:26,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:26,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 23:07:26,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:27,146 INFO L124 PetriNetUnfolderBase]: 1040/1548 cut-off events. [2023-11-06 23:07:27,146 INFO L125 PetriNetUnfolderBase]: For 2704/2704 co-relation queries the response was YES. [2023-11-06 23:07:27,149 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 23:07:27,163 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 63 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-06 23:07:27,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 65 transitions, 580 flow [2023-11-06 23:07:27,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-11-06 23:07:27,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47462277091906724 [2023-11-06 23:07:27,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-11-06 23:07:27,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-11-06 23:07:27,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:27,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-11-06 23:07:27,168 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 23:07:27,170 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 23:07:27,170 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 23:07:27,171 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 247 flow. Second operand 3 states and 346 transitions. [2023-11-06 23:07:27,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 65 transitions, 580 flow [2023-11-06 23:07:27,175 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 23:07:27,177 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 255 flow [2023-11-06 23:07:27,178 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 23:07:27,181 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2023-11-06 23:07:27,181 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 255 flow [2023-11-06 23:07:27,181 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 23:07:27,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:27,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:07:27,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:07:27,182 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 23:07:27,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:27,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1084330372, now seen corresponding path program 1 times [2023-11-06 23:07:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:27,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123524207] [2023-11-06 23:07:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:27,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123524207] [2023-11-06 23:07:27,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123524207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:27,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:27,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:27,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925209016] [2023-11-06 23:07:27,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:27,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:27,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:27,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:27,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:27,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 23:07:27,248 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 23:07:27,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:27,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 23:07:27,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:27,516 INFO L124 PetriNetUnfolderBase]: 970/1450 cut-off events. [2023-11-06 23:07:27,516 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2023-11-06 23:07:27,519 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 23:07:27,533 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 44 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-06 23:07:27,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 415 flow [2023-11-06 23:07:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-11-06 23:07:27,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773662551440329 [2023-11-06 23:07:27,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-11-06 23:07:27,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-11-06 23:07:27,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:27,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-11-06 23:07:27,538 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 23:07:27,540 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 23:07:27,541 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 23:07:27,541 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 255 flow. Second operand 3 states and 348 transitions. [2023-11-06 23:07:27,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 415 flow [2023-11-06 23:07:27,546 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 23:07:27,547 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 273 flow [2023-11-06 23:07:27,548 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 23:07:27,548 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-06 23:07:27,548 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 273 flow [2023-11-06 23:07:27,549 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 23:07:27,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:27,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:27,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:07:27,550 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 23:07:27,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:27,550 INFO L85 PathProgramCache]: Analyzing trace with hash -745420921, now seen corresponding path program 1 times [2023-11-06 23:07:27,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:27,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880517858] [2023-11-06 23:07:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:27,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:27,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:27,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880517858] [2023-11-06 23:07:27,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880517858] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:27,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327411099] [2023-11-06 23:07:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:27,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:27,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:27,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:27,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:07:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:07:27,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:27,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:27,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327411099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:27,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:07:27,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-06 23:07:27,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35182574] [2023-11-06 23:07:27,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:27,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:27,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:27,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:27,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 23:07:27,872 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 23:07:27,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:27,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 23:07:27,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:28,062 INFO L124 PetriNetUnfolderBase]: 835/1250 cut-off events. [2023-11-06 23:07:28,062 INFO L125 PetriNetUnfolderBase]: For 3083/3083 co-relation queries the response was YES. [2023-11-06 23:07:28,065 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 23:07:28,076 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 60 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-06 23:07:28,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 615 flow [2023-11-06 23:07:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:07:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2023-11-06 23:07:28,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619341563786008 [2023-11-06 23:07:28,079 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2023-11-06 23:07:28,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2023-11-06 23:07:28,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:28,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2023-11-06 23:07:28,081 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 23:07:28,084 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 23:07:28,084 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 23:07:28,084 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 273 flow. Second operand 4 states and 449 transitions. [2023-11-06 23:07:28,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 615 flow [2023-11-06 23:07:28,088 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 23:07:28,090 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 267 flow [2023-11-06 23:07:28,090 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 23:07:28,093 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-11-06 23:07:28,094 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 267 flow [2023-11-06 23:07:28,095 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 23:07:28,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:28,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:28,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:28,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:28,300 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 23:07:28,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash -745420858, now seen corresponding path program 1 times [2023-11-06 23:07:28,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:28,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558163538] [2023-11-06 23:07:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:28,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:28,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558163538] [2023-11-06 23:07:28,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558163538] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:28,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062863975] [2023-11-06 23:07:28,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:28,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:28,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:28,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:28,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:07:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:28,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:07:28,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:28,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:28,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062863975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:28,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:28,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-06 23:07:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882772854] [2023-11-06 23:07:28,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:28,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:07:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:28,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:07:28,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:07:28,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 243 [2023-11-06 23:07:28,647 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 23:07:28,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:28,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 243 [2023-11-06 23:07:28,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:29,147 INFO L124 PetriNetUnfolderBase]: 1980/2915 cut-off events. [2023-11-06 23:07:29,148 INFO L125 PetriNetUnfolderBase]: For 7982/7982 co-relation queries the response was YES. [2023-11-06 23:07:29,153 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 23:07:29,183 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 141 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2023-11-06 23:07:29,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 149 transitions, 1469 flow [2023-11-06 23:07:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:07:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:07:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 679 transitions. [2023-11-06 23:07:29,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657064471879287 [2023-11-06 23:07:29,187 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 679 transitions. [2023-11-06 23:07:29,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 679 transitions. [2023-11-06 23:07:29,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:29,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 679 transitions. [2023-11-06 23:07:29,190 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 23:07:29,193 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 23:07:29,195 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 23:07:29,196 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 267 flow. Second operand 6 states and 679 transitions. [2023-11-06 23:07:29,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 149 transitions, 1469 flow [2023-11-06 23:07:29,202 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 23:07:29,206 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 325 flow [2023-11-06 23:07:29,207 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 23:07:29,208 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-11-06 23:07:29,208 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 325 flow [2023-11-06 23:07:29,208 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 23:07:29,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:29,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:29,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:29,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:29,414 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 23:07:29,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash -745420821, now seen corresponding path program 1 times [2023-11-06 23:07:29,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:29,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405631454] [2023-11-06 23:07:29,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:29,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:29,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:29,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405631454] [2023-11-06 23:07:29,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405631454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:29,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:29,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:29,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544109287] [2023-11-06 23:07:29,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:29,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:29,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:29,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:29,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 23:07:29,460 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 23:07:29,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:29,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 23:07:29,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:29,781 INFO L124 PetriNetUnfolderBase]: 1510/2250 cut-off events. [2023-11-06 23:07:29,781 INFO L125 PetriNetUnfolderBase]: For 6264/6264 co-relation queries the response was YES. [2023-11-06 23:07:29,787 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 23:07:29,801 INFO L140 encePairwiseOnDemand]: 241/243 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-06 23:07:29,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 372 flow [2023-11-06 23:07:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-11-06 23:07:29,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2023-11-06 23:07:29,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-11-06 23:07:29,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-11-06 23:07:29,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:29,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-11-06 23:07:29,806 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 23:07:29,808 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 23:07:29,808 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 23:07:29,809 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 325 flow. Second operand 3 states and 333 transitions. [2023-11-06 23:07:29,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 372 flow [2023-11-06 23:07:29,817 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 23:07:29,818 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 296 flow [2023-11-06 23:07:29,819 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 23:07:29,820 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-11-06 23:07:29,820 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 296 flow [2023-11-06 23:07:29,820 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 23:07:29,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:29,820 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:29,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:07:29,821 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 23:07:29,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1635550076, now seen corresponding path program 1 times [2023-11-06 23:07:29,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:29,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348201533] [2023-11-06 23:07:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:29,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,884 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 23:07:29,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348201533] [2023-11-06 23:07:29,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348201533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607269638] [2023-11-06 23:07:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:29,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:29,889 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:29,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:07:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:07:29,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:29,998 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 23:07:29,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:29,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607269638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:29,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:07:29,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-11-06 23:07:30,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810775964] [2023-11-06 23:07:30,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:30,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:30,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:30,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:30,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 23:07:30,017 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 23:07:30,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:30,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 23:07:30,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:30,427 INFO L124 PetriNetUnfolderBase]: 1631/2426 cut-off events. [2023-11-06 23:07:30,428 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2023-11-06 23:07:30,434 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 23:07:30,448 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 56 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-11-06 23:07:30,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 616 flow [2023-11-06 23:07:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:07:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:07:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 564 transitions. [2023-11-06 23:07:30,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641975308641975 [2023-11-06 23:07:30,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 564 transitions. [2023-11-06 23:07:30,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 564 transitions. [2023-11-06 23:07:30,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:30,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 564 transitions. [2023-11-06 23:07:30,455 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 23:07:30,459 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 23:07:30,459 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 23:07:30,460 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 296 flow. Second operand 5 states and 564 transitions. [2023-11-06 23:07:30,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 616 flow [2023-11-06 23:07:30,469 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 23:07:30,471 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 319 flow [2023-11-06 23:07:30,471 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 23:07:30,471 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-11-06 23:07:30,472 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 319 flow [2023-11-06 23:07:30,472 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 23:07:30,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:30,472 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-06 23:07:30,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:30,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:30,678 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 23:07:30,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash 838597208, now seen corresponding path program 2 times [2023-11-06 23:07:30,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:30,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594904856] [2023-11-06 23:07:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:30,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:30,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:30,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594904856] [2023-11-06 23:07:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594904856] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:30,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838997118] [2023-11-06 23:07:30,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:07:30,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:30,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:30,817 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:30,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:07:30,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:07:30,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:30,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:07:30,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:31,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:31,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838997118] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:31,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:31,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 23:07:31,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77699061] [2023-11-06 23:07:31,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:31,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 23:07:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:31,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 23:07:31,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:07:31,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 23:07:31,171 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 23:07:31,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:31,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 23:07:31,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:32,074 INFO L124 PetriNetUnfolderBase]: 2623/3926 cut-off events. [2023-11-06 23:07:32,074 INFO L125 PetriNetUnfolderBase]: For 16558/16558 co-relation queries the response was YES. [2023-11-06 23:07:32,084 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 23:07:32,106 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 152 selfloop transitions, 31 changer transitions 0/183 dead transitions. [2023-11-06 23:07:32,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 183 transitions, 1578 flow [2023-11-06 23:07:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:07:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:07:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1371 transitions. [2023-11-06 23:07:32,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47016460905349794 [2023-11-06 23:07:32,113 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1371 transitions. [2023-11-06 23:07:32,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1371 transitions. [2023-11-06 23:07:32,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:32,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1371 transitions. [2023-11-06 23:07:32,118 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 23:07:32,124 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 23:07:32,125 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 23:07:32,125 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 319 flow. Second operand 12 states and 1371 transitions. [2023-11-06 23:07:32,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 183 transitions, 1578 flow [2023-11-06 23:07:32,145 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 23:07:32,149 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 648 flow [2023-11-06 23:07:32,149 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 23:07:32,150 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2023-11-06 23:07:32,151 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 648 flow [2023-11-06 23:07:32,152 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 23:07:32,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:32,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:32,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:32,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:32,358 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 23:07:32,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:32,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1635550116, now seen corresponding path program 1 times [2023-11-06 23:07:32,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:32,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687531497] [2023-11-06 23:07:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:32,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:32,457 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 23:07:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687531497] [2023-11-06 23:07:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687531497] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233151645] [2023-11-06 23:07:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:32,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:32,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:32,459 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:32,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:07:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:32,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:07:32,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:32,612 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 23:07:32,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:32,668 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 23:07:32,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233151645] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:32,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:32,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-06 23:07:32,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171898721] [2023-11-06 23:07:32,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:32,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 23:07:32,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 23:07:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:07:32,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 23:07:32,698 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 23:07:32,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:32,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 23:07:32,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:33,625 INFO L124 PetriNetUnfolderBase]: 3415/5114 cut-off events. [2023-11-06 23:07:33,626 INFO L125 PetriNetUnfolderBase]: For 33646/33646 co-relation queries the response was YES. [2023-11-06 23:07:33,644 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 23:07:33,753 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 122 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2023-11-06 23:07:33,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 143 transitions, 1494 flow [2023-11-06 23:07:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:07:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 23:07:33,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 907 transitions. [2023-11-06 23:07:33,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46656378600823045 [2023-11-06 23:07:33,759 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 907 transitions. [2023-11-06 23:07:33,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 907 transitions. [2023-11-06 23:07:33,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:33,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 907 transitions. [2023-11-06 23:07:33,764 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 23:07:33,769 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 23:07:33,770 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 23:07:33,770 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 648 flow. Second operand 8 states and 907 transitions. [2023-11-06 23:07:33,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 143 transitions, 1494 flow [2023-11-06 23:07:33,871 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 23:07:33,877 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 832 flow [2023-11-06 23:07:33,877 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 23:07:33,878 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2023-11-06 23:07:33,879 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 832 flow [2023-11-06 23:07:33,879 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 23:07:33,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:33,880 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:33,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:34,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:34,086 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 23:07:34,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1850293404, now seen corresponding path program 2 times [2023-11-06 23:07:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:34,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137274723] [2023-11-06 23:07:34,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:34,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:34,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:34,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137274723] [2023-11-06 23:07:34,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137274723] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:34,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631845875] [2023-11-06 23:07:34,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:07:34,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:34,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:34,299 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:34,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:07:34,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:07:34,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:34,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 23:07:34,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:34,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631845875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:34,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 23:07:34,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192371343] [2023-11-06 23:07:34,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:34,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 23:07:34,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:34,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 23:07:34,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:07:34,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 243 [2023-11-06 23:07:34,716 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 23:07:34,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:34,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 243 [2023-11-06 23:07:34,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:36,797 INFO L124 PetriNetUnfolderBase]: 7087/10586 cut-off events. [2023-11-06 23:07:36,798 INFO L125 PetriNetUnfolderBase]: For 124460/124460 co-relation queries the response was YES. [2023-11-06 23:07:36,828 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 23:07:36,904 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 654 selfloop transitions, 11 changer transitions 0/665 dead transitions. [2023-11-06 23:07:36,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 665 transitions, 9744 flow [2023-11-06 23:07:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:07:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:07:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1333 transitions. [2023-11-06 23:07:36,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45713305898491086 [2023-11-06 23:07:36,913 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1333 transitions. [2023-11-06 23:07:36,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1333 transitions. [2023-11-06 23:07:36,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:36,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1333 transitions. [2023-11-06 23:07:36,919 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 23:07:36,927 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 23:07:36,928 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 23:07:36,928 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 832 flow. Second operand 12 states and 1333 transitions. [2023-11-06 23:07:36,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 665 transitions, 9744 flow [2023-11-06 23:07:37,092 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 23:07:37,103 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 862 flow [2023-11-06 23:07:37,103 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 23:07:37,104 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2023-11-06 23:07:37,104 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 862 flow [2023-11-06 23:07:37,105 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 23:07:37,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:37,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:37,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:37,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 23:07:37,311 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 23:07:37,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:37,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1572221284, now seen corresponding path program 1 times [2023-11-06 23:07:37,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:37,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34897080] [2023-11-06 23:07:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:37,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,429 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 23:07:37,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:37,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34897080] [2023-11-06 23:07:37,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34897080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:37,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740517104] [2023-11-06 23:07:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:37,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:37,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:37,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:37,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:07:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:07:37,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:37,630 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 23:07:37,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:37,718 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 23:07:37,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740517104] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:37,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:37,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 23:07:37,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252319328] [2023-11-06 23:07:37,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:37,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 23:07:37,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 23:07:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:07:37,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 23:07:37,781 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 23:07:37,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:37,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 23:07:37,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:40,950 INFO L124 PetriNetUnfolderBase]: 10457/15799 cut-off events. [2023-11-06 23:07:40,950 INFO L125 PetriNetUnfolderBase]: For 163320/163320 co-relation queries the response was YES. [2023-11-06 23:07:41,105 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 23:07:41,199 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 264 selfloop transitions, 73 changer transitions 0/337 dead transitions. [2023-11-06 23:07:41,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 337 transitions, 3829 flow [2023-11-06 23:07:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 23:07:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 23:07:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1696 transitions. [2023-11-06 23:07:41,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652949245541838 [2023-11-06 23:07:41,206 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1696 transitions. [2023-11-06 23:07:41,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1696 transitions. [2023-11-06 23:07:41,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:41,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1696 transitions. [2023-11-06 23:07:41,213 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 23:07:41,220 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 23:07:41,222 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 23:07:41,222 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 862 flow. Second operand 15 states and 1696 transitions. [2023-11-06 23:07:41,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 337 transitions, 3829 flow [2023-11-06 23:07:41,880 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 23:07:41,884 INFO L231 Difference]: Finished difference. Result has 106 places, 116 transitions, 1594 flow [2023-11-06 23:07:41,884 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 23:07:41,884 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2023-11-06 23:07:41,885 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 116 transitions, 1594 flow [2023-11-06 23:07:41,885 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 23:07:41,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:41,886 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:41,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:42,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 23:07:42,091 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 23:07:42,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:42,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1963878234, now seen corresponding path program 1 times [2023-11-06 23:07:42,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:42,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944085319] [2023-11-06 23:07:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:42,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,199 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 23:07:42,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:42,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944085319] [2023-11-06 23:07:42,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944085319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:42,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899640133] [2023-11-06 23:07:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:42,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:42,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:42,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:42,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:07:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:07:42,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:42,394 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 23:07:42,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:42,484 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 23:07:42,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899640133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:42,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:42,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 23:07:42,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731024551] [2023-11-06 23:07:42,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 23:07:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 23:07:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:07:42,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 23:07:42,546 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 23:07:42,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:42,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 23:07:42,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:47,081 INFO L124 PetriNetUnfolderBase]: 15563/23656 cut-off events. [2023-11-06 23:07:47,081 INFO L125 PetriNetUnfolderBase]: For 334361/334361 co-relation queries the response was YES. [2023-11-06 23:07:47,332 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 23:07:47,446 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 346 selfloop transitions, 108 changer transitions 0/454 dead transitions. [2023-11-06 23:07:47,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 454 transitions, 5481 flow [2023-11-06 23:07:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 23:07:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 23:07:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2027 transitions. [2023-11-06 23:07:47,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634202103337906 [2023-11-06 23:07:47,465 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2027 transitions. [2023-11-06 23:07:47,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2027 transitions. [2023-11-06 23:07:47,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:47,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2027 transitions. [2023-11-06 23:07:47,478 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 23:07:47,487 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 23:07:47,489 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 23:07:47,489 INFO L175 Difference]: Start difference. First operand has 106 places, 116 transitions, 1594 flow. Second operand 18 states and 2027 transitions. [2023-11-06 23:07:47,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 454 transitions, 5481 flow [2023-11-06 23:07:50,323 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 23:07:50,329 INFO L231 Difference]: Finished difference. Result has 124 places, 180 transitions, 2668 flow [2023-11-06 23:07:50,330 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 23:07:50,330 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2023-11-06 23:07:50,330 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 180 transitions, 2668 flow [2023-11-06 23:07:50,331 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 23:07:50,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:50,331 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:50,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:50,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 23:07:50,537 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 23:07:50,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:50,537 INFO L85 PathProgramCache]: Analyzing trace with hash -756222374, now seen corresponding path program 2 times [2023-11-06 23:07:50,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:50,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003618500] [2023-11-06 23:07:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:50,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:50,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:50,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003618500] [2023-11-06 23:07:50,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003618500] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120612192] [2023-11-06 23:07:50,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:07:50,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:50,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:50,649 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:50,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:07:50,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:07:50,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:50,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:07:50,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:50,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:51,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120612192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:51,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:51,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-06 23:07:51,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530888981] [2023-11-06 23:07:51,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:51,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 23:07:51,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 23:07:51,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2023-11-06 23:07:51,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 23:07:51,068 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 23:07:51,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:51,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 23:07:51,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:57,491 INFO L124 PetriNetUnfolderBase]: 20735/31632 cut-off events. [2023-11-06 23:07:57,492 INFO L125 PetriNetUnfolderBase]: For 595743/595743 co-relation queries the response was YES. [2023-11-06 23:07:57,716 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 23:07:57,849 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 352 selfloop transitions, 151 changer transitions 0/503 dead transitions. [2023-11-06 23:07:57,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 503 transitions, 6558 flow [2023-11-06 23:07:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 23:07:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 23:07:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1925 transitions. [2023-11-06 23:07:57,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598886468167516 [2023-11-06 23:07:57,855 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1925 transitions. [2023-11-06 23:07:57,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1925 transitions. [2023-11-06 23:07:57,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:57,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1925 transitions. [2023-11-06 23:07:57,861 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 23:07:57,868 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 23:07:57,869 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 23:07:57,870 INFO L175 Difference]: Start difference. First operand has 124 places, 180 transitions, 2668 flow. Second operand 17 states and 1925 transitions. [2023-11-06 23:07:57,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 503 transitions, 6558 flow [2023-11-06 23:08:08,591 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 23:08:08,599 INFO L231 Difference]: Finished difference. Result has 145 places, 240 transitions, 3972 flow [2023-11-06 23:08:08,599 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 23:08:08,600 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2023-11-06 23:08:08,600 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 240 transitions, 3972 flow [2023-11-06 23:08:08,600 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 23:08:08,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:08,601 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:08,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:08,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 23:08:08,801 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 23:08:08,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:08,802 INFO L85 PathProgramCache]: Analyzing trace with hash -760869000, now seen corresponding path program 2 times [2023-11-06 23:08:08,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:08,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566642358] [2023-11-06 23:08:08,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:08,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:08,991 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 23:08:08,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:08,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566642358] [2023-11-06 23:08:08,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566642358] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:08,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184960629] [2023-11-06 23:08:08,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:08:08,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:08,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:08,994 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:09,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 23:08:09,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:08:09,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:08:09,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:08:09,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:09,248 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 23:08:09,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:09,398 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 23:08:09,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184960629] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:09,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:09,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-06 23:08:09,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617337146] [2023-11-06 23:08:09,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:09,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 23:08:09,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:09,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 23:08:09,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2023-11-06 23:08:09,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 23:08:09,509 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 23:08:09,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:09,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 23:08:09,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:19,607 INFO L124 PetriNetUnfolderBase]: 25097/38345 cut-off events. [2023-11-06 23:08:19,607 INFO L125 PetriNetUnfolderBase]: For 1065511/1065511 co-relation queries the response was YES. [2023-11-06 23:08:19,839 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 23:08:20,184 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 397 selfloop transitions, 236 changer transitions 0/633 dead transitions. [2023-11-06 23:08:20,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 633 transitions, 8833 flow [2023-11-06 23:08:20,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 23:08:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 23:08:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2373 transitions. [2023-11-06 23:08:20,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2023-11-06 23:08:20,190 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2373 transitions. [2023-11-06 23:08:20,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2373 transitions. [2023-11-06 23:08:20,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:20,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2373 transitions. [2023-11-06 23:08:20,197 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 23:08:20,204 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 23:08:20,205 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 23:08:20,205 INFO L175 Difference]: Start difference. First operand has 145 places, 240 transitions, 3972 flow. Second operand 21 states and 2373 transitions. [2023-11-06 23:08:20,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 633 transitions, 8833 flow [2023-11-06 23:08:35,548 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 23:08:35,558 INFO L231 Difference]: Finished difference. Result has 168 places, 304 transitions, 5586 flow [2023-11-06 23:08:35,558 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 23:08:35,559 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2023-11-06 23:08:35,559 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 304 transitions, 5586 flow [2023-11-06 23:08:35,560 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 23:08:35,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:35,560 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:35,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:35,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 23:08:35,765 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 23:08:35,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash -932637958, now seen corresponding path program 3 times [2023-11-06 23:08:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:35,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800826244] [2023-11-06 23:08:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:35,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,892 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 23:08:35,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:35,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800826244] [2023-11-06 23:08:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800826244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:35,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767838350] [2023-11-06 23:08:35,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:08:35,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:35,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:35,897 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:35,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83384dd0-bb59-4b2b-a392-c94ed5386eb1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 23:08:36,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 23:08:36,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:08:36,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:08:36,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:36,140 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 23:08:36,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:36,280 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 23:08:36,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767838350] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:36,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:36,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-06 23:08:36,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823593729] [2023-11-06 23:08:36,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:36,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 23:08:36,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:36,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 23:08:36,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-06 23:08:36,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 23:08:36,364 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 23:08:36,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:36,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 23:08:36,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand