./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-context1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/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_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-context1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/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_7387407e-47fb-4dd4-b7ee-1807a2f0a049/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 d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:53:32,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:53:32,495 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:53:32,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:53:32,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:53:32,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:53:32,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:53:32,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:53:32,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:53:32,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:53:32,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:53:32,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:53:32,585 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:53:32,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:53:32,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:53:32,588 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:53:32,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:53:32,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:53:32,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:53:32,590 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:53:32,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:53:32,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:53:32,591 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:53:32,592 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:53:32,592 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:53:32,593 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:53:32,612 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:53:32,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:53:32,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:53:32,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:53:32,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:32,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:53:32,616 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:53:32,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:53:32,616 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:53:32,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:53:32,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:53:32,617 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:53:32,618 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:53:32,618 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:53:32,618 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:53:32,619 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_7387407e-47fb-4dd4-b7ee-1807a2f0a049/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e [2023-11-19 07:53:32,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:53:33,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:53:33,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:53:33,021 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:53:33,021 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:53:33,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/test-context1.wvr.c [2023-11-19 07:53:36,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:53:36,322 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:53:36,323 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/sv-benchmarks/c/weaver/test-context1.wvr.c [2023-11-19 07:53:36,331 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/data/ab552cb8f/126182fb9cf046e5841cb14b2b7f051e/FLAG1c34c2c5a [2023-11-19 07:53:36,355 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/data/ab552cb8f/126182fb9cf046e5841cb14b2b7f051e [2023-11-19 07:53:36,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:53:36,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:53:36,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:36,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:53:36,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:53:36,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416667d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36, skipping insertion in model container [2023-11-19 07:53:36,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,403 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:53:36,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:36,621 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:53:36,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:36,658 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:53:36,658 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:53:36,665 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:53:36,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36 WrapperNode [2023-11-19 07:53:36,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:36,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:36,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:53:36,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:53:36,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,710 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 157 [2023-11-19 07:53:36,710 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:36,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:53:36,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:53:36,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:53:36,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:53:36,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:53:36,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:53:36,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:53:36,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:36,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:36,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:53:36,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:53:36,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:53:36,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:53:36,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:53:36,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:53:36,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:53:36,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:53:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:53:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:53:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:53:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:53:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:53:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:53:36,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:53:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:53:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:53:36,884 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 07:53:37,066 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:53:37,068 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:53:37,470 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:53:37,811 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:53:37,811 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:53:37,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:37 BoogieIcfgContainer [2023-11-19 07:53:37,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:53:37,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:53:37,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:53:37,830 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:53:37,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:36" (1/3) ... [2023-11-19 07:53:37,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22009588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:37, skipping insertion in model container [2023-11-19 07:53:37,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36" (2/3) ... [2023-11-19 07:53:37,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22009588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:37, skipping insertion in model container [2023-11-19 07:53:37,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:37" (3/3) ... [2023-11-19 07:53:37,836 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2023-11-19 07:53:37,846 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:53:37,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:53:37,858 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 07:53:37,858 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:53:37,982 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:53:38,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 290 flow [2023-11-19 07:53:38,133 INFO L124 PetriNetUnfolderBase]: 10/136 cut-off events. [2023-11-19 07:53:38,134 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:53:38,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 136 events. 10/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 131 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 95. Up to 3 conditions per place. [2023-11-19 07:53:38,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 138 transitions, 290 flow [2023-11-19 07:53:38,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 114 transitions, 237 flow [2023-11-19 07:53:38,149 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:53:38,160 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 114 transitions, 237 flow [2023-11-19 07:53:38,163 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 114 transitions, 237 flow [2023-11-19 07:53:38,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 114 transitions, 237 flow [2023-11-19 07:53:38,200 INFO L124 PetriNetUnfolderBase]: 9/114 cut-off events. [2023-11-19 07:53:38,201 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:53:38,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 114 events. 9/114 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 132 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 95. Up to 3 conditions per place. [2023-11-19 07:53:38,204 INFO L119 LiptonReduction]: Number of co-enabled transitions 1042 [2023-11-19 07:53:44,018 INFO L134 LiptonReduction]: Checked pairs total: 1273 [2023-11-19 07:53:44,020 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-11-19 07:53:44,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:53:44,055 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;@70ec0f3a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:53:44,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-11-19 07:53:44,060 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:53:44,061 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:53:44,061 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:44,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:44,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:53:44,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:44,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash 22099, now seen corresponding path program 1 times [2023-11-19 07:53:44,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:44,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810160554] [2023-11-19 07:53:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:44,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:44,350 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 07:53:44,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:44,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810160554] [2023-11-19 07:53:44,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810160554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:44,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:44,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:53:44,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634612989] [2023-11-19 07:53:44,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:44,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:44,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:44,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:44,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:44,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 264 [2023-11-19 07:53:44,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 07:53:44,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:44,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 264 [2023-11-19 07:53:44,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:44,529 INFO L124 PetriNetUnfolderBase]: 193/290 cut-off events. [2023-11-19 07:53:44,529 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:53:44,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 290 events. 193/290 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1041 event pairs, 88 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 524. Up to 280 conditions per place. [2023-11-19 07:53:44,534 INFO L140 encePairwiseOnDemand]: 255/264 looper letters, 18 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-11-19 07:53:44,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 93 flow [2023-11-19 07:53:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-11-19 07:53:44,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2023-11-19 07:53:44,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-11-19 07:53:44,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-11-19 07:53:44,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:44,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-11-19 07:53:44,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:44,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:44,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:44,574 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 67 flow. Second operand 3 states and 348 transitions. [2023-11-19 07:53:44,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 93 flow [2023-11-19 07:53:44,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:53:44,579 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 52 flow [2023-11-19 07:53:44,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2023-11-19 07:53:44,585 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -8 predicate places. [2023-11-19 07:53:44,585 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 52 flow [2023-11-19 07:53:44,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 07:53:44,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:44,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:53:44,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:53:44,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:44,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash 22100, now seen corresponding path program 1 times [2023-11-19 07:53:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:44,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225894946] [2023-11-19 07:53:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:44,658 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 07:53:44,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:44,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225894946] [2023-11-19 07:53:44,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225894946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:44,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:44,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:53:44,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099204885] [2023-11-19 07:53:44,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:44,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:44,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:44,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:44,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:44,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 264 [2023-11-19 07:53:44,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 07:53:44,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:44,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 264 [2023-11-19 07:53:44,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:44,766 INFO L124 PetriNetUnfolderBase]: 194/292 cut-off events. [2023-11-19 07:53:44,766 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:53:44,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 292 events. 194/292 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1045 event pairs, 88 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 579. Up to 284 conditions per place. [2023-11-19 07:53:44,770 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 19 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-11-19 07:53:44,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 102 flow [2023-11-19 07:53:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-11-19 07:53:44,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2023-11-19 07:53:44,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-11-19 07:53:44,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-11-19 07:53:44,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:44,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-11-19 07:53:44,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 07:53:44,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:44,782 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:44,782 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 52 flow. Second operand 3 states and 344 transitions. [2023-11-19 07:53:44,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 102 flow [2023-11-19 07:53:44,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:44,784 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 67 flow [2023-11-19 07:53:44,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2023-11-19 07:53:44,786 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -7 predicate places. [2023-11-19 07:53:44,786 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 67 flow [2023-11-19 07:53:44,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 07:53:44,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:44,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:53:44,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:53:44,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:44,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash 685934, now seen corresponding path program 1 times [2023-11-19 07:53:44,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:44,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754938772] [2023-11-19 07:53:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:44,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:44,983 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 07:53:44,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:44,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754938772] [2023-11-19 07:53:44,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754938772] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:44,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903688434] [2023-11-19 07:53:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:44,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:44,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:44,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:45,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:53:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:45,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:53:45,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:45,130 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 07:53:45,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:53:45,152 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 07:53:45,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903688434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:53:45,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:53:45,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:53:45,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132139496] [2023-11-19 07:53:45,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:53:45,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:53:45,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:53:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:53:45,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 264 [2023-11-19 07:53:45,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 67 flow. Second operand has 7 states, 7 states have (on average 108.14285714285714) internal successors, (757), 7 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 07:53:45,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:45,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 264 [2023-11-19 07:53:45,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:45,321 INFO L124 PetriNetUnfolderBase]: 197/298 cut-off events. [2023-11-19 07:53:45,322 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:53:45,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 298 events. 197/298 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1072 event pairs, 88 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 579. Up to 287 conditions per place. [2023-11-19 07:53:45,326 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 19 selfloop transitions, 9 changer transitions 0/30 dead transitions. [2023-11-19 07:53:45,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 147 flow [2023-11-19 07:53:45,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:53:45,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:53:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 673 transitions. [2023-11-19 07:53:45,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42487373737373735 [2023-11-19 07:53:45,331 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 673 transitions. [2023-11-19 07:53:45,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 673 transitions. [2023-11-19 07:53:45,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:45,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 673 transitions. [2023-11-19 07:53:45,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 07:53:45,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 07:53:45,342 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 07:53:45,342 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 67 flow. Second operand 6 states and 673 transitions. [2023-11-19 07:53:45,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 147 flow [2023-11-19 07:53:45,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:45,344 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 123 flow [2023-11-19 07:53:45,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-11-19 07:53:45,346 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-11-19 07:53:45,346 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 123 flow [2023-11-19 07:53:45,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.14285714285714) internal successors, (757), 7 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 07:53:45,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:45,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:53:45,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:45,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:45,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:45,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash 658968931, now seen corresponding path program 1 times [2023-11-19 07:53:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:45,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220187296] [2023-11-19 07:53:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:45,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:45,676 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 07:53:45,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:45,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220187296] [2023-11-19 07:53:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220187296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:45,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:53:45,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098031305] [2023-11-19 07:53:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:45,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:45,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:45,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:45,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 264 [2023-11-19 07:53:45,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 07:53:45,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:45,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 264 [2023-11-19 07:53:45,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:45,797 INFO L124 PetriNetUnfolderBase]: 174/282 cut-off events. [2023-11-19 07:53:45,798 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:53:45,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 282 events. 174/282 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1065 event pairs, 45 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 580. Up to 243 conditions per place. [2023-11-19 07:53:45,801 INFO L140 encePairwiseOnDemand]: 255/264 looper letters, 31 selfloop transitions, 2 changer transitions 3/38 dead transitions. [2023-11-19 07:53:45,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 214 flow [2023-11-19 07:53:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-11-19 07:53:45,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684343434343434 [2023-11-19 07:53:45,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-11-19 07:53:45,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-11-19 07:53:45,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:45,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-11-19 07:53:45,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 07:53:45,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:45,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:45,810 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 123 flow. Second operand 3 states and 371 transitions. [2023-11-19 07:53:45,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 214 flow [2023-11-19 07:53:45,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 193 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:45,813 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 126 flow [2023-11-19 07:53:45,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-11-19 07:53:45,814 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-11-19 07:53:45,814 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 126 flow [2023-11-19 07:53:45,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 07:53:45,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:45,815 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:53:45,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:53:45,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:45,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:45,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1039348524, now seen corresponding path program 2 times [2023-11-19 07:53:45,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:45,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528019478] [2023-11-19 07:53:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:45,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:45,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:45,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528019478] [2023-11-19 07:53:45,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528019478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986359649] [2023-11-19 07:53:45,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:53:45,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:45,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:45,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:53:46,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:53:46,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:53:46,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:53:46,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:46,057 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 07:53:46,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:53:46,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986359649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:46,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:53:46,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:53:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791138430] [2023-11-19 07:53:46,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:46,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:46,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:46,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:46,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:53:46,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 264 [2023-11-19 07:53:46,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 07:53:46,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:46,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 264 [2023-11-19 07:53:46,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:46,165 INFO L124 PetriNetUnfolderBase]: 160/267 cut-off events. [2023-11-19 07:53:46,165 INFO L125 PetriNetUnfolderBase]: For 37/61 co-relation queries the response was YES. [2023-11-19 07:53:46,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 267 events. 160/267 cut-off events. For 37/61 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1102 event pairs, 94 based on Foata normal form. 1/157 useless extension candidates. Maximal degree in co-relation 691. Up to 257 conditions per place. [2023-11-19 07:53:46,171 INFO L140 encePairwiseOnDemand]: 261/264 looper letters, 22 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-11-19 07:53:46,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 172 flow [2023-11-19 07:53:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:46,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-11-19 07:53:46,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43813131313131315 [2023-11-19 07:53:46,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-11-19 07:53:46,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-11-19 07:53:46,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:46,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-11-19 07:53:46,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 07:53:46,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:46,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:46,179 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 126 flow. Second operand 3 states and 347 transitions. [2023-11-19 07:53:46,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 172 flow [2023-11-19 07:53:46,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 154 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-19 07:53:46,182 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 110 flow [2023-11-19 07:53:46,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-11-19 07:53:46,185 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-11-19 07:53:46,185 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 110 flow [2023-11-19 07:53:46,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 07:53:46,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:46,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:53:46,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:46,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:46,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:46,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1046798867, now seen corresponding path program 1 times [2023-11-19 07:53:46,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:46,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401554196] [2023-11-19 07:53:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:46,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:46,472 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 07:53:46,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:46,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401554196] [2023-11-19 07:53:46,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401554196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:46,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:46,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:46,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955032918] [2023-11-19 07:53:46,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:53:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:46,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:53:46,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:53:46,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 264 [2023-11-19 07:53:46,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 07:53:46,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:46,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 264 [2023-11-19 07:53:46,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:46,601 INFO L124 PetriNetUnfolderBase]: 146/257 cut-off events. [2023-11-19 07:53:46,601 INFO L125 PetriNetUnfolderBase]: For 31/39 co-relation queries the response was YES. [2023-11-19 07:53:46,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 257 events. 146/257 cut-off events. For 31/39 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 956 event pairs, 43 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 626. Up to 157 conditions per place. [2023-11-19 07:53:46,604 INFO L140 encePairwiseOnDemand]: 258/264 looper letters, 35 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2023-11-19 07:53:46,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 217 flow [2023-11-19 07:53:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-11-19 07:53:46,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2023-11-19 07:53:46,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-11-19 07:53:46,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-11-19 07:53:46,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:46,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-11-19 07:53:46,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 07:53:46,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:46,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:46,611 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 110 flow. Second operand 3 states and 362 transitions. [2023-11-19 07:53:46,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 217 flow [2023-11-19 07:53:46,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:46,616 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 125 flow [2023-11-19 07:53:46,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2023-11-19 07:53:46,618 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-11-19 07:53:46,618 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 125 flow [2023-11-19 07:53:46,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 07:53:46,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:46,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:53:46,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:53:46,620 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:46,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:46,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1046798866, now seen corresponding path program 1 times [2023-11-19 07:53:46,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:46,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581787273] [2023-11-19 07:53:46,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:46,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:46,702 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 07:53:46,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581787273] [2023-11-19 07:53:46,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581787273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:46,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:46,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:46,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995731160] [2023-11-19 07:53:46,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:46,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:53:46,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:46,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:53:46,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:53:46,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 264 [2023-11-19 07:53:46,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 07:53:46,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:46,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 264 [2023-11-19 07:53:46,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:46,785 INFO L124 PetriNetUnfolderBase]: 128/233 cut-off events. [2023-11-19 07:53:46,786 INFO L125 PetriNetUnfolderBase]: For 49/52 co-relation queries the response was YES. [2023-11-19 07:53:46,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 233 events. 128/233 cut-off events. For 49/52 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 855 event pairs, 47 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 632. Up to 145 conditions per place. [2023-11-19 07:53:46,788 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 34 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-11-19 07:53:46,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 209 flow [2023-11-19 07:53:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-11-19 07:53:46,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532828282828283 [2023-11-19 07:53:46,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-11-19 07:53:46,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-11-19 07:53:46,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:46,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-11-19 07:53:46,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 07:53:46,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:46,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:46,795 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 125 flow. Second operand 3 states and 359 transitions. [2023-11-19 07:53:46,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 209 flow [2023-11-19 07:53:46,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:46,797 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 124 flow [2023-11-19 07:53:46,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-11-19 07:53:46,798 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-11-19 07:53:46,798 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 124 flow [2023-11-19 07:53:46,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 07:53:46,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:46,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:53:46,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:53:46,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:46,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1046798859, now seen corresponding path program 1 times [2023-11-19 07:53:46,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:46,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319161354] [2023-11-19 07:53:46,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:46,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:46,852 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 07:53:46,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:46,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319161354] [2023-11-19 07:53:46,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319161354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:46,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855458597] [2023-11-19 07:53:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:46,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:46,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:46,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:46,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:53:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:46,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:53:46,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:47,014 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 07:53:47,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:53:47,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855458597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:47,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:53:47,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-11-19 07:53:47,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907095215] [2023-11-19 07:53:47,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:47,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:53:47,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:47,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:53:47,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:53:47,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 264 [2023-11-19 07:53:47,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:47,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 264 [2023-11-19 07:53:47,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:47,163 INFO L124 PetriNetUnfolderBase]: 136/261 cut-off events. [2023-11-19 07:53:47,163 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-11-19 07:53:47,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 261 events. 136/261 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1022 event pairs, 104 based on Foata normal form. 6/214 useless extension candidates. Maximal degree in co-relation 648. Up to 227 conditions per place. [2023-11-19 07:53:47,166 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 26 selfloop transitions, 2 changer transitions 9/39 dead transitions. [2023-11-19 07:53:47,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 218 flow [2023-11-19 07:53:47,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:53:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:53:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 446 transitions. [2023-11-19 07:53:47,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42234848484848486 [2023-11-19 07:53:47,168 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 446 transitions. [2023-11-19 07:53:47,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 446 transitions. [2023-11-19 07:53:47,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:47,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 446 transitions. [2023-11-19 07:53:47,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 07:53:47,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 07:53:47,173 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 07:53:47,173 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 124 flow. Second operand 4 states and 446 transitions. [2023-11-19 07:53:47,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 218 flow [2023-11-19 07:53:47,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:47,176 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 122 flow [2023-11-19 07:53:47,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-11-19 07:53:47,176 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-11-19 07:53:47,177 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 122 flow [2023-11-19 07:53:47,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:47,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:47,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:47,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:47,388 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:47,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:47,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2132484623, now seen corresponding path program 1 times [2023-11-19 07:53:47,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:47,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789842211] [2023-11-19 07:53:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:47,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:47,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:47,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789842211] [2023-11-19 07:53:47,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789842211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:47,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335961967] [2023-11-19 07:53:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:47,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:47,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:47,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:47,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:53:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:47,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:53:47,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:47,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:53:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:47,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335961967] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:53:47,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:53:47,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 10 [2023-11-19 07:53:47,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794640802] [2023-11-19 07:53:47,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:53:47,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:53:47,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:47,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:53:47,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:53:47,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 264 [2023-11-19 07:53:47,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 122 flow. Second operand has 12 states, 12 states have (on average 101.5) internal successors, (1218), 12 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 07:53:47,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:47,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 264 [2023-11-19 07:53:47,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:48,200 INFO L124 PetriNetUnfolderBase]: 249/470 cut-off events. [2023-11-19 07:53:48,200 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-19 07:53:48,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 470 events. 249/470 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2167 event pairs, 86 based on Foata normal form. 34/435 useless extension candidates. Maximal degree in co-relation 1315. Up to 191 conditions per place. [2023-11-19 07:53:48,205 INFO L140 encePairwiseOnDemand]: 254/264 looper letters, 49 selfloop transitions, 13 changer transitions 14/78 dead transitions. [2023-11-19 07:53:48,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 78 transitions, 438 flow [2023-11-19 07:53:48,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:53:48,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:53:48,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 984 transitions. [2023-11-19 07:53:48,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2023-11-19 07:53:48,211 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 984 transitions. [2023-11-19 07:53:48,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 984 transitions. [2023-11-19 07:53:48,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:48,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 984 transitions. [2023-11-19 07:53:48,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 0 states have call successors, (0), 0 states 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 07:53:48,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states 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 07:53:48,223 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states 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 07:53:48,223 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 122 flow. Second operand 9 states and 984 transitions. [2023-11-19 07:53:48,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 78 transitions, 438 flow [2023-11-19 07:53:48,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 78 transitions, 430 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:53:48,227 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 234 flow [2023-11-19 07:53:48,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=234, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-11-19 07:53:48,229 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-11-19 07:53:48,229 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 234 flow [2023-11-19 07:53:48,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.5) internal successors, (1218), 12 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 07:53:48,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:48,230 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:53:48,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:48,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:48,439 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:48,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:48,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1042774134, now seen corresponding path program 2 times [2023-11-19 07:53:48,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:48,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510115501] [2023-11-19 07:53:48,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:48,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:53:48,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:48,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510115501] [2023-11-19 07:53:48,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510115501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:48,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659753014] [2023-11-19 07:53:48,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:53:48,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:48,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:48,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:48,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:53:48,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:53:48,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:53:48,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:53:48,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:48,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:53:48,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:53:48,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659753014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:48,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:53:48,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-19 07:53:48,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906219689] [2023-11-19 07:53:48,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:48,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:48,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:48,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:53:48,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 264 [2023-11-19 07:53:48,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 07:53:48,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:48,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 264 [2023-11-19 07:53:48,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:48,785 INFO L124 PetriNetUnfolderBase]: 198/387 cut-off events. [2023-11-19 07:53:48,785 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2023-11-19 07:53:48,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 387 events. 198/387 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1806 event pairs, 151 based on Foata normal form. 32/396 useless extension candidates. Maximal degree in co-relation 1062. Up to 377 conditions per place. [2023-11-19 07:53:48,788 INFO L140 encePairwiseOnDemand]: 261/264 looper letters, 33 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-11-19 07:53:48,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 280 flow [2023-11-19 07:53:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2023-11-19 07:53:48,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-11-19 07:53:48,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2023-11-19 07:53:48,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2023-11-19 07:53:48,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:48,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2023-11-19 07:53:48,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states 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 07:53:48,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:48,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 07:53:48,796 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 234 flow. Second operand 3 states and 352 transitions. [2023-11-19 07:53:48,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 280 flow [2023-11-19 07:53:48,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 271 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:53:48,803 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 205 flow [2023-11-19 07:53:48,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-11-19 07:53:48,804 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-11-19 07:53:48,805 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 205 flow [2023-11-19 07:53:48,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 07:53:48,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:48,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:48,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:53:49,028 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:49,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1506774886, now seen corresponding path program 1 times [2023-11-19 07:53:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:49,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992733228] [2023-11-19 07:53:49,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:49,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:49,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:49,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992733228] [2023-11-19 07:53:49,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992733228] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:49,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532203470] [2023-11-19 07:53:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:49,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:49,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:49,165 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:49,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:53:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:49,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:53:49,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:49,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:53:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:49,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532203470] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:53:49,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:53:49,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 7 [2023-11-19 07:53:49,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371149549] [2023-11-19 07:53:49,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:53:49,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:53:49,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:49,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:53:49,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:53:49,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 264 [2023-11-19 07:53:49,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 205 flow. Second operand has 9 states, 9 states have (on average 112.55555555555556) internal successors, (1013), 9 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states 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 07:53:49,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:49,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 264 [2023-11-19 07:53:49,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:49,593 INFO L124 PetriNetUnfolderBase]: 314/579 cut-off events. [2023-11-19 07:53:49,593 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2023-11-19 07:53:49,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 579 events. 314/579 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2596 event pairs, 46 based on Foata normal form. 32/598 useless extension candidates. Maximal degree in co-relation 1879. Up to 205 conditions per place. [2023-11-19 07:53:49,597 INFO L140 encePairwiseOnDemand]: 257/264 looper letters, 49 selfloop transitions, 21 changer transitions 28/100 dead transitions. [2023-11-19 07:53:49,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 100 transitions, 682 flow [2023-11-19 07:53:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:53:49,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:53:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1187 transitions. [2023-11-19 07:53:49,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44962121212121214 [2023-11-19 07:53:49,603 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1187 transitions. [2023-11-19 07:53:49,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1187 transitions. [2023-11-19 07:53:49,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:49,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1187 transitions. [2023-11-19 07:53:49,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 07:53:49,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 264.0) internal successors, (2904), 11 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states 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 07:53:49,615 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 264.0) internal successors, (2904), 11 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states 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 07:53:49,615 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 205 flow. Second operand 10 states and 1187 transitions. [2023-11-19 07:53:49,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 100 transitions, 682 flow [2023-11-19 07:53:49,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 100 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:49,621 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 447 flow [2023-11-19 07:53:49,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=447, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-11-19 07:53:49,622 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-11-19 07:53:49,622 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 447 flow [2023-11-19 07:53:49,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.55555555555556) internal successors, (1013), 9 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states 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 07:53:49,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:49,624 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:49,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:49,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:53:49,843 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:49,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:49,843 INFO L85 PathProgramCache]: Analyzing trace with hash -165838637, now seen corresponding path program 1 times [2023-11-19 07:53:49,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:49,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198870145] [2023-11-19 07:53:49,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:49,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:53:49,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:49,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198870145] [2023-11-19 07:53:49,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198870145] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:49,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640094953] [2023-11-19 07:53:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:49,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:49,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:49,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:49,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:53:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:50,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:53:50,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:53:50,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:53:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640094953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:50,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:53:50,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-19 07:53:50,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138196799] [2023-11-19 07:53:50,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:50,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:53:50,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:50,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:53:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:53:50,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 264 [2023-11-19 07:53:50,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 07:53:50,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:50,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 264 [2023-11-19 07:53:50,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:50,197 INFO L124 PetriNetUnfolderBase]: 215/406 cut-off events. [2023-11-19 07:53:50,198 INFO L125 PetriNetUnfolderBase]: For 1592/1601 co-relation queries the response was YES. [2023-11-19 07:53:50,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 406 events. 215/406 cut-off events. For 1592/1601 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1715 event pairs, 99 based on Foata normal form. 60/458 useless extension candidates. Maximal degree in co-relation 1501. Up to 271 conditions per place. [2023-11-19 07:53:50,201 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 34 selfloop transitions, 4 changer transitions 4/44 dead transitions. [2023-11-19 07:53:50,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 390 flow [2023-11-19 07:53:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:53:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:53:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-11-19 07:53:50,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2023-11-19 07:53:50,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-11-19 07:53:50,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-11-19 07:53:50,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:50,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-11-19 07:53:50,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 07:53:50,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 07:53:50,209 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 07:53:50,209 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 447 flow. Second operand 4 states and 468 transitions. [2023-11-19 07:53:50,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 390 flow [2023-11-19 07:53:50,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 333 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-11-19 07:53:50,215 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 246 flow [2023-11-19 07:53:50,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-11-19 07:53:50,216 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-11-19 07:53:50,217 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 246 flow [2023-11-19 07:53:50,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 07:53:50,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:50,217 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:50,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:50,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:53:50,439 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:50,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1317102440, now seen corresponding path program 2 times [2023-11-19 07:53:50,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:50,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983458853] [2023-11-19 07:53:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:50,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983458853] [2023-11-19 07:53:50,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983458853] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427510097] [2023-11-19 07:53:50,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:53:50,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:50,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:50,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:50,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:53:50,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:53:50,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:53:50,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:53:50,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:50,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:53:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:51,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427510097] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:53:51,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:53:51,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-11-19 07:53:51,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31809459] [2023-11-19 07:53:51,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:53:51,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-19 07:53:51,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-19 07:53:51,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:53:51,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 264 [2023-11-19 07:53:51,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 246 flow. Second operand has 23 states, 23 states have (on average 101.56521739130434) internal successors, (2336), 23 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 07:53:51,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:51,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 264 [2023-11-19 07:53:51,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:52,147 INFO L124 PetriNetUnfolderBase]: 389/752 cut-off events. [2023-11-19 07:53:52,147 INFO L125 PetriNetUnfolderBase]: For 1724/1724 co-relation queries the response was YES. [2023-11-19 07:53:52,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2463 conditions, 752 events. 389/752 cut-off events. For 1724/1724 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3835 event pairs, 106 based on Foata normal form. 60/809 useless extension candidates. Maximal degree in co-relation 2443. Up to 188 conditions per place. [2023-11-19 07:53:52,154 INFO L140 encePairwiseOnDemand]: 257/264 looper letters, 30 selfloop transitions, 10 changer transitions 70/112 dead transitions. [2023-11-19 07:53:52,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 112 transitions, 757 flow [2023-11-19 07:53:52,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:53:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-19 07:53:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1602 transitions. [2023-11-19 07:53:52,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40454545454545454 [2023-11-19 07:53:52,164 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1602 transitions. [2023-11-19 07:53:52,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1602 transitions. [2023-11-19 07:53:52,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:52,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1602 transitions. [2023-11-19 07:53:52,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 106.8) internal successors, (1602), 15 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 07:53:52,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 264.0) internal successors, (4224), 16 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states 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 07:53:52,182 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 264.0) internal successors, (4224), 16 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states 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 07:53:52,182 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 246 flow. Second operand 15 states and 1602 transitions. [2023-11-19 07:53:52,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 112 transitions, 757 flow [2023-11-19 07:53:52,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 112 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:52,190 INFO L231 Difference]: Finished difference. Result has 66 places, 38 transitions, 299 flow [2023-11-19 07:53:52,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=299, PETRI_PLACES=66, PETRI_TRANSITIONS=38} [2023-11-19 07:53:52,192 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2023-11-19 07:53:52,193 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 38 transitions, 299 flow [2023-11-19 07:53:52,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 101.56521739130434) internal successors, (2336), 23 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 07:53:52,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:52,194 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:52,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:52,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:53:52,418 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:53:52,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:52,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1397707390, now seen corresponding path program 3 times [2023-11-19 07:53:52,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:52,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98014473] [2023-11-19 07:53:52,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:52,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:53:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98014473] [2023-11-19 07:53:52,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98014473] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898788669] [2023-11-19 07:53:52,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:53:52,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:52,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:52,567 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:52,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:53:52,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:53:52,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:53:52,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:53:52,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 07:53:52,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:53:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 07:53:52,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898788669] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:53:52,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:53:52,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-11-19 07:53:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232821097] [2023-11-19 07:53:52,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:53:52,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:53:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:52,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:53:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:53:52,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 264 [2023-11-19 07:53:52,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 38 transitions, 299 flow. Second operand has 9 states, 9 states have (on average 110.33333333333333) internal successors, (993), 9 states have internal predecessors, (993), 0 states have call successors, (0), 0 states 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 07:53:52,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:52,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 264 [2023-11-19 07:53:52,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:53,043 INFO L124 PetriNetUnfolderBase]: 287/532 cut-off events. [2023-11-19 07:53:53,043 INFO L125 PetriNetUnfolderBase]: For 2328/2328 co-relation queries the response was YES. [2023-11-19 07:53:53,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 532 events. 287/532 cut-off events. For 2328/2328 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2423 event pairs, 65 based on Foata normal form. 28/557 useless extension candidates. Maximal degree in co-relation 1865. Up to 196 conditions per place. [2023-11-19 07:53:53,047 INFO L140 encePairwiseOnDemand]: 259/264 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2023-11-19 07:53:53,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 614 flow [2023-11-19 07:53:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:53:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:53:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 923 transitions. [2023-11-19 07:53:53,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43702651515151514 [2023-11-19 07:53:53,052 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 923 transitions. [2023-11-19 07:53:53,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 923 transitions. [2023-11-19 07:53:53,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:53,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 923 transitions. [2023-11-19 07:53:53,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.375) internal successors, (923), 8 states have internal predecessors, (923), 0 states have call successors, (0), 0 states 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 07:53:53,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 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 07:53:53,118 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 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 07:53:53,118 INFO L175 Difference]: Start difference. First operand has 66 places, 38 transitions, 299 flow. Second operand 8 states and 923 transitions. [2023-11-19 07:53:53,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 614 flow [2023-11-19 07:53:53,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 81 transitions, 537 flow, removed 21 selfloop flow, removed 15 redundant places. [2023-11-19 07:53:53,127 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-11-19 07:53:53,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-11-19 07:53:53,128 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-11-19 07:53:53,128 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-11-19 07:53:53,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.33333333333333) internal successors, (993), 9 states have internal predecessors, (993), 0 states have call successors, (0), 0 states 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 07:53:53,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2023-11-19 07:53:53,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-11-19 07:53:53,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-11-19 07:53:53,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-11-19 07:53:53,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-11-19 07:53:53,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-11-19 07:53:53,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-11-19 07:53:53,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2023-11-19 07:53:53,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2023-11-19 07:53:53,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-11-19 07:53:53,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2023-11-19 07:53:53,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-11-19 07:53:53,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2023-11-19 07:53:53,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2023-11-19 07:53:53,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 28 remaining) [2023-11-19 07:53:53,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2023-11-19 07:53:53,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-11-19 07:53:53,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-11-19 07:53:53,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2023-11-19 07:53:53,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2023-11-19 07:53:53,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-11-19 07:53:53,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-11-19 07:53:53,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-11-19 07:53:53,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2023-11-19 07:53:53,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-11-19 07:53:53,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-11-19 07:53:53,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2023-11-19 07:53:53,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-11-19 07:53:53,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:53,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:53,365 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:53,372 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:53:53,372 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:53:53,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:53:53 BasicIcfg [2023-11-19 07:53:53,376 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:53:53,377 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:53:53,377 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:53:53,377 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:53:53,378 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:37" (3/4) ... [2023-11-19 07:53:53,380 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:53:53,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:53:53,384 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:53:53,392 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-19 07:53:53,393 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:53:53,393 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:53:53,393 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:53:53,503 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:53:53,504 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:53:53,504 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:53:53,505 INFO L158 Benchmark]: Toolchain (without parser) took 17145.79ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 172.2MB in the beginning and 243.2MB in the end (delta: -71.0MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2023-11-19 07:53:53,505 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:53:53,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.57ms. Allocated memory is still 201.3MB. Free memory was 172.2MB in the beginning and 159.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:53:53,506 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.24ms. Allocated memory is still 201.3MB. Free memory was 159.7MB in the beginning and 158.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:53:53,506 INFO L158 Benchmark]: Boogie Preprocessor took 36.30ms. Allocated memory is still 201.3MB. Free memory was 158.6MB in the beginning and 156.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:53:53,507 INFO L158 Benchmark]: RCFGBuilder took 1070.67ms. Allocated memory is still 201.3MB. Free memory was 156.7MB in the beginning and 131.8MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-19 07:53:53,507 INFO L158 Benchmark]: TraceAbstraction took 15551.14ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 130.9MB in the beginning and 247.9MB in the end (delta: -117.1MB). Peak memory consumption was 138.2MB. Max. memory is 16.1GB. [2023-11-19 07:53:53,508 INFO L158 Benchmark]: Witness Printer took 126.92ms. Allocated memory is still 293.6MB. Free memory was 247.9MB in the beginning and 243.2MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:53:53,510 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.57ms. Allocated memory is still 201.3MB. Free memory was 172.2MB in the beginning and 159.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.24ms. Allocated memory is still 201.3MB. Free memory was 159.7MB in the beginning and 158.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.30ms. Allocated memory is still 201.3MB. Free memory was 158.6MB in the beginning and 156.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1070.67ms. Allocated memory is still 201.3MB. Free memory was 156.7MB in the beginning and 131.8MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 15551.14ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 130.9MB in the beginning and 247.9MB in the end (delta: -117.1MB). Peak memory consumption was 138.2MB. Max. memory is 16.1GB. * Witness Printer took 126.92ms. Allocated memory is still 293.6MB. Free memory was 247.9MB in the beginning and 243.2MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 112 PlacesBefore, 33 PlacesAfterwards, 114 TransitionsBefore, 29 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 126 TotalNumberOfCompositions, 1273 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1227, independent: 1219, independent conditional: 0, independent unconditional: 1219, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 494, independent: 492, independent conditional: 0, independent unconditional: 492, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1227, independent: 727, independent conditional: 0, independent unconditional: 727, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 494, unknown conditional: 0, unknown unconditional: 494] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 161 locations, 28 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.3s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 871 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 739 mSDsluCounter, 300 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 270 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1794 IncrementalHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 30 mSDtfsCounter, 1794 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=447occurred in iteration=11, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 187 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 1092 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1170 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 28 InterpolantComputations, 9 PerfectInterpolantSequences, 69/122 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:53:53,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387407e-47fb-4dd4-b7ee-1807a2f0a049/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE