./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:55,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:55,480 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:54:55,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:55,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:55,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:55,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:55,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:55,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:55,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:55,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:55,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:55,518 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:55,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:55,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:54:55,520 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:55,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:55,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:55,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:55,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:54:55,523 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:55,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:54:55,525 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:54:55,526 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:54:55,526 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:55,527 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:54:55,527 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:55,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:55,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:55,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:55,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:55,535 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:55,535 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:55,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:54:55,536 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:55,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:55,537 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:55,537 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:54:55,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:55,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:55,539 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:55,543 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_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2023-11-19 07:54:55,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:55,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:55,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:55,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:55,872 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:55,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2023-11-19 07:54:59,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:59,332 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:59,333 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2023-11-19 07:54:59,352 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/data/03b6b570c/4ae634892e434047ab5fd214fb93afd2/FLAG70817116d [2023-11-19 07:54:59,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/data/03b6b570c/4ae634892e434047ab5fd214fb93afd2 [2023-11-19 07:54:59,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:59,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:59,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:59,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:59,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:59,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:59" (1/1) ... [2023-11-19 07:54:59,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49255700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:59, skipping insertion in model container [2023-11-19 07:54:59,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:59" (1/1) ... [2023-11-19 07:54:59,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:00,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:00,180 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:00,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:00,357 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:00,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00 WrapperNode [2023-11-19 07:55:00,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:00,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:00,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:00,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:00,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,428 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 280 [2023-11-19 07:55:00,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:00,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:00,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:00,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:00,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:00,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:00,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:00,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:00,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:00,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:00,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:00,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:55:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:55:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:55:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:55:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:55:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:55:00,573 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:55:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:00,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:00,575 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:55:00,746 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:00,748 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:01,210 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:01,232 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:01,232 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-19 07:55:01,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:01 BoogieIcfgContainer [2023-11-19 07:55:01,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:01,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:01,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:01,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:01,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:59" (1/3) ... [2023-11-19 07:55:01,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd81c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:01, skipping insertion in model container [2023-11-19 07:55:01,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (2/3) ... [2023-11-19 07:55:01,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd81c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:01, skipping insertion in model container [2023-11-19 07:55:01,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:01" (3/3) ... [2023-11-19 07:55:01,248 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2023-11-19 07:55:01,258 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:55:01,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:01,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-19 07:55:01,271 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:55:01,412 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:55:01,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 310 transitions, 627 flow [2023-11-19 07:55:01,633 INFO L124 PetriNetUnfolderBase]: 78/478 cut-off events. [2023-11-19 07:55:01,633 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:55:01,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 478 events. 78/478 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2366 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2023-11-19 07:55:01,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 310 transitions, 627 flow [2023-11-19 07:55:01,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 307 transitions, 621 flow [2023-11-19 07:55:01,687 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:55:01,702 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 307 transitions, 621 flow [2023-11-19 07:55:01,705 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 307 transitions, 621 flow [2023-11-19 07:55:01,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 307 transitions, 621 flow [2023-11-19 07:55:01,825 INFO L124 PetriNetUnfolderBase]: 77/475 cut-off events. [2023-11-19 07:55:01,826 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:55:01,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 475 events. 77/475 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2347 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2023-11-19 07:55:01,852 INFO L119 LiptonReduction]: Number of co-enabled transitions 31328 [2023-11-19 07:55:07,067 INFO L134 LiptonReduction]: Checked pairs total: 50999 [2023-11-19 07:55:07,067 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-11-19 07:55:07,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:07,092 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e85ef91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:07,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-19 07:55:07,095 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:55:07,095 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:55:07,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:55:07,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:07,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:55:07,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:55:07,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:07,103 INFO L85 PathProgramCache]: Analyzing trace with hash 38762, now seen corresponding path program 1 times [2023-11-19 07:55:07,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:07,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252556083] [2023-11-19 07:55:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:07,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252556083] [2023-11-19 07:55:07,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252556083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:07,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:07,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:55:07,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653135286] [2023-11-19 07:55:07,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:07,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:07,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:07,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:07,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 594 [2023-11-19 07:55:07,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 121 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:07,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:07,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 594 [2023-11-19 07:55:07,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:07,947 INFO L124 PetriNetUnfolderBase]: 1101/2267 cut-off events. [2023-11-19 07:55:07,948 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:55:07,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 2267 events. 1101/2267 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14880 event pairs, 945 based on Foata normal form. 271/1811 useless extension candidates. Maximal degree in co-relation 4233. Up to 2073 conditions per place. [2023-11-19 07:55:07,966 INFO L140 encePairwiseOnDemand]: 557/594 looper letters, 73 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-19 07:55:07,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 329 flow [2023-11-19 07:55:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2023-11-19 07:55:07,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49607182940516276 [2023-11-19 07:55:07,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2023-11-19 07:55:07,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2023-11-19 07:55:07,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:08,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2023-11-19 07:55:08,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:08,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:08,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:08,022 INFO L175 Difference]: Start difference. First operand has 85 places, 121 transitions, 249 flow. Second operand 3 states and 884 transitions. [2023-11-19 07:55:08,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 329 flow [2023-11-19 07:55:08,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 329 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:55:08,032 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 183 flow [2023-11-19 07:55:08,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2023-11-19 07:55:08,038 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 0 predicate places. [2023-11-19 07:55:08,038 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 183 flow [2023-11-19 07:55:08,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:08,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:08,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:55:08,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:55:08,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:55:08,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:08,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1157309410, now seen corresponding path program 1 times [2023-11-19 07:55:08,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:08,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691768894] [2023-11-19 07:55:08,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:08,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:08,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:08,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691768894] [2023-11-19 07:55:08,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691768894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:08,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:08,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:08,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945493703] [2023-11-19 07:55:08,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:08,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:08,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:08,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:08,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 594 [2023-11-19 07:55:08,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:08,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:08,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 594 [2023-11-19 07:55:08,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:08,561 INFO L124 PetriNetUnfolderBase]: 1101/2268 cut-off events. [2023-11-19 07:55:08,561 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:55:08,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 2268 events. 1101/2268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14891 event pairs, 945 based on Foata normal form. 1/1543 useless extension candidates. Maximal degree in co-relation 4338. Up to 2075 conditions per place. [2023-11-19 07:55:08,578 INFO L140 encePairwiseOnDemand]: 591/594 looper letters, 74 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-11-19 07:55:08,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 337 flow [2023-11-19 07:55:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-11-19 07:55:08,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775533108866442 [2023-11-19 07:55:08,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-11-19 07:55:08,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-11-19 07:55:08,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:08,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-11-19 07:55:08,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:08,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:08,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:08,594 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 183 flow. Second operand 3 states and 851 transitions. [2023-11-19 07:55:08,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 337 flow [2023-11-19 07:55:08,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:55:08,598 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 191 flow [2023-11-19 07:55:08,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2023-11-19 07:55:08,600 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 1 predicate places. [2023-11-19 07:55:08,600 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 191 flow [2023-11-19 07:55:08,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:08,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:08,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:55:08,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:55:08,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:55:08,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1542278104, now seen corresponding path program 1 times [2023-11-19 07:55:08,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:08,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988146611] [2023-11-19 07:55:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:08,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:08,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:08,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988146611] [2023-11-19 07:55:08,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988146611] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:08,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423553797] [2023-11-19 07:55:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:08,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:08,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:08,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:08,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:55:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:08,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:55:08,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:08,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423553797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:08,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:55:08,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 07:55:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738805046] [2023-11-19 07:55:08,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:08,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:55:08,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:55:08,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:08,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 594 [2023-11-19 07:55:08,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:08,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:08,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 594 [2023-11-19 07:55:08,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:09,292 INFO L124 PetriNetUnfolderBase]: 1101/2271 cut-off events. [2023-11-19 07:55:09,292 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:55:09,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4365 conditions, 2271 events. 1101/2271 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14872 event pairs, 945 based on Foata normal form. 0/1544 useless extension candidates. Maximal degree in co-relation 4353. Up to 2075 conditions per place. [2023-11-19 07:55:09,311 INFO L140 encePairwiseOnDemand]: 591/594 looper letters, 74 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-11-19 07:55:09,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 361 flow [2023-11-19 07:55:09,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:55:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1624 transitions. [2023-11-19 07:55:09,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556677890011223 [2023-11-19 07:55:09,318 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1624 transitions. [2023-11-19 07:55:09,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1624 transitions. [2023-11-19 07:55:09,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:09,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1624 transitions. [2023-11-19 07:55:09,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.6666666666667) internal successors, (1624), 6 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:09,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:09,337 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:09,337 INFO L175 Difference]: Start difference. First operand has 86 places, 87 transitions, 191 flow. Second operand 6 states and 1624 transitions. [2023-11-19 07:55:09,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 361 flow [2023-11-19 07:55:09,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 357 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:55:09,342 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 223 flow [2023-11-19 07:55:09,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2023-11-19 07:55:09,343 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2023-11-19 07:55:09,343 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 223 flow [2023-11-19 07:55:09,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:09,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:09,345 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-19 07:55:09,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:09,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:09,559 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:55:09,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2076151483, now seen corresponding path program 1 times [2023-11-19 07:55:09,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:09,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066467766] [2023-11-19 07:55:09,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:09,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:55:09,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066467766] [2023-11-19 07:55:09,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066467766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:09,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:09,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:09,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526763862] [2023-11-19 07:55:09,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:09,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:09,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:09,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:09,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:09,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 594 [2023-11-19 07:55:09,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:09,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:09,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 594 [2023-11-19 07:55:09,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:10,158 INFO L124 PetriNetUnfolderBase]: 1056/2137 cut-off events. [2023-11-19 07:55:10,158 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:55:10,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 2137 events. 1056/2137 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14273 event pairs, 84 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 4080. Up to 1924 conditions per place. [2023-11-19 07:55:10,181 INFO L140 encePairwiseOnDemand]: 589/594 looper letters, 98 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-11-19 07:55:10,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 111 transitions, 465 flow [2023-11-19 07:55:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-11-19 07:55:10,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2023-11-19 07:55:10,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-11-19 07:55:10,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-11-19 07:55:10,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:10,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-11-19 07:55:10,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:10,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:10,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:10,200 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 223 flow. Second operand 3 states and 873 transitions. [2023-11-19 07:55:10,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 111 transitions, 465 flow [2023-11-19 07:55:10,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 111 transitions, 451 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:55:10,206 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 213 flow [2023-11-19 07:55:10,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-11-19 07:55:10,207 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2023-11-19 07:55:10,208 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 213 flow [2023-11-19 07:55:10,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:10,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:10,209 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 07:55:10,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:55:10,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:55:10,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1978307407, now seen corresponding path program 1 times [2023-11-19 07:55:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:10,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823618019] [2023-11-19 07:55:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:10,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:10,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:10,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823618019] [2023-11-19 07:55:10,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823618019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401577135] [2023-11-19 07:55:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:10,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:10,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:10,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:10,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:55:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:10,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:55:10,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:10,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:10,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401577135] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:10,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:55:10,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 07:55:10,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822607439] [2023-11-19 07:55:10,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:10,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:55:10,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:55:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:55:10,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 594 [2023-11-19 07:55:10,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 213 flow. Second operand has 12 states, 12 states have (on average 258.25) internal successors, (3099), 12 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:10,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:10,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 594 [2023-11-19 07:55:10,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:11,085 INFO L124 PetriNetUnfolderBase]: 1056/2133 cut-off events. [2023-11-19 07:55:11,086 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-19 07:55:11,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4190 conditions, 2133 events. 1056/2133 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13722 event pairs, 903 based on Foata normal form. 6/1510 useless extension candidates. Maximal degree in co-relation 4137. Up to 1945 conditions per place. [2023-11-19 07:55:11,108 INFO L140 encePairwiseOnDemand]: 591/594 looper letters, 72 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2023-11-19 07:55:11,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 415 flow [2023-11-19 07:55:11,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:55:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:55:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3173 transitions. [2023-11-19 07:55:11,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451459034792368 [2023-11-19 07:55:11,122 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3173 transitions. [2023-11-19 07:55:11,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3173 transitions. [2023-11-19 07:55:11,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:11,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3173 transitions. [2023-11-19 07:55:11,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 264.4166666666667) internal successors, (3173), 12 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:11,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:11,158 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:11,159 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 213 flow. Second operand 12 states and 3173 transitions. [2023-11-19 07:55:11,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 415 flow [2023-11-19 07:55:11,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 94 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:55:11,169 INFO L231 Difference]: Finished difference. Result has 108 places, 94 transitions, 293 flow [2023-11-19 07:55:11,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=293, PETRI_PLACES=108, PETRI_TRANSITIONS=94} [2023-11-19 07:55:11,173 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 23 predicate places. [2023-11-19 07:55:11,173 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 94 transitions, 293 flow [2023-11-19 07:55:11,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 258.25) internal successors, (3099), 12 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:11,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:11,176 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 07:55:11,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:11,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:11,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:55:11,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1903865969, now seen corresponding path program 2 times [2023-11-19 07:55:11,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:11,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631604021] [2023-11-19 07:55:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:11,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:55:11,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:55:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:55:11,505 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:55:11,505 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:55:11,507 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-19 07:55:11,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-11-19 07:55:11,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-11-19 07:55:11,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-11-19 07:55:11,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-11-19 07:55:11,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-11-19 07:55:11,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-11-19 07:55:11,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-11-19 07:55:11,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-11-19 07:55:11,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-11-19 07:55:11,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-11-19 07:55:11,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-11-19 07:55:11,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-11-19 07:55:11,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-11-19 07:55:11,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-11-19 07:55:11,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-11-19 07:55:11,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-11-19 07:55:11,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-11-19 07:55:11,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-11-19 07:55:11,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-11-19 07:55:11,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-11-19 07:55:11,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-11-19 07:55:11,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-11-19 07:55:11,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-11-19 07:55:11,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-11-19 07:55:11,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-11-19 07:55:11,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-11-19 07:55:11,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-11-19 07:55:11,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-11-19 07:55:11,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:55:11,524 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-11-19 07:55:11,527 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:55:11,528 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:55:11,606 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:55:11,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 400 transitions, 816 flow [2023-11-19 07:55:11,775 INFO L124 PetriNetUnfolderBase]: 126/774 cut-off events. [2023-11-19 07:55:11,776 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:55:11,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 774 events. 126/774 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4343 event pairs, 0 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 480. Up to 12 conditions per place. [2023-11-19 07:55:11,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 400 transitions, 816 flow [2023-11-19 07:55:11,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 400 transitions, 816 flow [2023-11-19 07:55:11,806 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:55:11,806 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 341 places, 400 transitions, 816 flow [2023-11-19 07:55:11,806 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 341 places, 400 transitions, 816 flow [2023-11-19 07:55:11,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 400 transitions, 816 flow [2023-11-19 07:55:11,943 INFO L124 PetriNetUnfolderBase]: 126/774 cut-off events. [2023-11-19 07:55:11,943 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:55:11,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 774 events. 126/774 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4343 event pairs, 0 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 480. Up to 12 conditions per place. [2023-11-19 07:55:12,008 INFO L119 LiptonReduction]: Number of co-enabled transitions 81488 [2023-11-19 07:55:18,246 INFO L134 LiptonReduction]: Checked pairs total: 131875 [2023-11-19 07:55:18,247 INFO L136 LiptonReduction]: Total number of compositions: 348 [2023-11-19 07:55:18,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:18,251 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e85ef91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:18,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-19 07:55:18,253 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:55:18,253 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:55:18,254 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:55:18,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:18,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:55:18,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:55:18,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash 65431, now seen corresponding path program 1 times [2023-11-19 07:55:18,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:18,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468993263] [2023-11-19 07:55:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:18,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:18,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:18,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468993263] [2023-11-19 07:55:18,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468993263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:18,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:18,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:55:18,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918322662] [2023-11-19 07:55:18,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:18,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:18,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 748 [2023-11-19 07:55:18,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 163 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:18,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:18,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 748 [2023-11-19 07:55:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:26,230 INFO L124 PetriNetUnfolderBase]: 54433/82334 cut-off events. [2023-11-19 07:55:26,230 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2023-11-19 07:55:26,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161367 conditions, 82334 events. 54433/82334 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 2518. Compared 633095 event pairs, 49330 based on Foata normal form. 9005/63388 useless extension candidates. Maximal degree in co-relation 76010. Up to 78906 conditions per place. [2023-11-19 07:55:27,002 INFO L140 encePairwiseOnDemand]: 699/748 looper letters, 103 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-11-19 07:55:27,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 464 flow [2023-11-19 07:55:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1149 transitions. [2023-11-19 07:55:27,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120320855614974 [2023-11-19 07:55:27,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1149 transitions. [2023-11-19 07:55:27,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1149 transitions. [2023-11-19 07:55:27,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:27,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1149 transitions. [2023-11-19 07:55:27,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 383.0) internal successors, (1149), 3 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:27,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:27,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:27,026 INFO L175 Difference]: Start difference. First operand has 114 places, 163 transitions, 342 flow. Second operand 3 states and 1149 transitions. [2023-11-19 07:55:27,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 464 flow [2023-11-19 07:55:27,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:55:27,032 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 266 flow [2023-11-19 07:55:27,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=748, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-11-19 07:55:27,034 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-11-19 07:55:27,034 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 266 flow [2023-11-19 07:55:27,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:27,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:27,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:55:27,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:55:27,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:55:27,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2032288, now seen corresponding path program 1 times [2023-11-19 07:55:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:27,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703112527] [2023-11-19 07:55:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:27,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:27,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:27,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703112527] [2023-11-19 07:55:27,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703112527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:27,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:27,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:27,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227433019] [2023-11-19 07:55:27,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:27,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:27,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:27,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:27,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:27,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 748 [2023-11-19 07:55:27,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:27,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:27,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 748 [2023-11-19 07:55:27,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:34,017 INFO L124 PetriNetUnfolderBase]: 54433/82333 cut-off events. [2023-11-19 07:55:34,017 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2023-11-19 07:55:34,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161372 conditions, 82333 events. 54433/82333 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 2518. Compared 633230 event pairs, 49330 based on Foata normal form. 0/54383 useless extension candidates. Maximal degree in co-relation 161359. Up to 78903 conditions per place. [2023-11-19 07:55:34,505 INFO L140 encePairwiseOnDemand]: 745/748 looper letters, 102 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-19 07:55:34,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 470 flow [2023-11-19 07:55:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:34,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1100 transitions. [2023-11-19 07:55:34,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2023-11-19 07:55:34,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1100 transitions. [2023-11-19 07:55:34,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1100 transitions. [2023-11-19 07:55:34,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:34,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1100 transitions. [2023-11-19 07:55:34,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.6666666666667) internal successors, (1100), 3 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:34,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:34,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:34,523 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 266 flow. Second operand 3 states and 1100 transitions. [2023-11-19 07:55:34,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 470 flow [2023-11-19 07:55:34,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 466 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:55:34,528 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 262 flow [2023-11-19 07:55:34,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=748, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2023-11-19 07:55:34,530 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-11-19 07:55:34,530 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 262 flow [2023-11-19 07:55:34,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:34,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:34,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:34,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:55:34,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:55:34,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash 48128457, now seen corresponding path program 1 times [2023-11-19 07:55:34,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:34,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972267176] [2023-11-19 07:55:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:34,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:34,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:34,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972267176] [2023-11-19 07:55:34,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972267176] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:34,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064364337] [2023-11-19 07:55:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:34,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:34,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:34,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:34,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:55:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:34,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:55:34,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:34,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:34,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064364337] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:34,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:55:34,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:55:34,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311588990] [2023-11-19 07:55:34,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:34,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:34,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 748 [2023-11-19 07:55:34,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 332.57142857142856) internal successors, (2328), 7 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:34,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:34,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 748 [2023-11-19 07:55:34,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:41,688 INFO L124 PetriNetUnfolderBase]: 54433/82336 cut-off events. [2023-11-19 07:55:41,689 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-11-19 07:55:41,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161381 conditions, 82336 events. 54433/82336 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 2515. Compared 633094 event pairs, 49330 based on Foata normal form. 3/54390 useless extension candidates. Maximal degree in co-relation 161353. Up to 78905 conditions per place. [2023-11-19 07:55:42,233 INFO L140 encePairwiseOnDemand]: 745/748 looper letters, 102 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-11-19 07:55:42,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 488 flow [2023-11-19 07:55:42,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:55:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2096 transitions. [2023-11-19 07:55:42,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46702317290552586 [2023-11-19 07:55:42,243 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2096 transitions. [2023-11-19 07:55:42,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2096 transitions. [2023-11-19 07:55:42,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:42,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2096 transitions. [2023-11-19 07:55:42,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 349.3333333333333) internal successors, (2096), 6 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) [2023-11-19 07:55:42,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 748.0) internal successors, (5236), 7 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:42,281 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 748.0) internal successors, (5236), 7 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:42,282 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 262 flow. Second operand 6 states and 2096 transitions. [2023-11-19 07:55:42,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 488 flow [2023-11-19 07:55:42,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:55:42,287 INFO L231 Difference]: Finished difference. Result has 122 places, 121 transitions, 294 flow [2023-11-19 07:55:42,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=748, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2023-11-19 07:55:42,290 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 8 predicate places. [2023-11-19 07:55:42,290 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 294 flow [2023-11-19 07:55:42,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 332.57142857142856) internal successors, (2328), 7 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:42,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:42,292 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:42,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:42,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a6158a-63da-4b8f-ba19-eb8ab16508bf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:42,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:55:42,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1604262528, now seen corresponding path program 2 times [2023-11-19 07:55:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:42,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122994067] [2023-11-19 07:55:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:55:42,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:42,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122994067] [2023-11-19 07:55:42,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122994067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:42,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:42,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:42,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527070248] [2023-11-19 07:55:42,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:42,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:42,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:42,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:42,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:42,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 748 [2023-11-19 07:55:42,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:42,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:42,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 748 [2023-11-19 07:55:42,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand