./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:33,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:33,499 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:24:33,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:33,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:33,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:33,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:33,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:33,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:33,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:33,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:33,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:33,567 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:33,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:33,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:24:33,570 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:33,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:33,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:33,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:33,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:24:33,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:33,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:24:33,573 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:24:33,574 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:33,574 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:33,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:24:33,575 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:33,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:33,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:33,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:33,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:33,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:33,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:33,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:24:33,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:33,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:33,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:33,580 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:24:33,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:33,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:33,581 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:33,581 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_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2023-11-12 02:24:33,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:33,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:33,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:33,869 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:33,869 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:33,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2023-11-12 02:24:37,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:37,245 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:37,257 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2023-11-12 02:24:37,267 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/data/e4441c4ee/7031544acaec4ff8bde7a5ff78145711/FLAG628bf2695 [2023-11-12 02:24:37,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/data/e4441c4ee/7031544acaec4ff8bde7a5ff78145711 [2023-11-12 02:24:37,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:37,299 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:37,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:37,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:37,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:37,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f55c0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37, skipping insertion in model container [2023-11-12 02:24:37,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:37,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:37,595 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:37,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:37,641 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:24:37,641 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:24:37,650 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:37,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37 WrapperNode [2023-11-12 02:24:37,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:37,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:37,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:37,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:37,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,701 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 164 [2023-11-12 02:24:37,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:37,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:37,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:37,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:37,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:37,765 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:37,765 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:37,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:37,766 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (1/1) ... [2023-11-12 02:24:37,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:37,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:37,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:37,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:24:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:24:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:24:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:24:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:24:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:24:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:24:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:24:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:24:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:24:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:24:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:24:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:24:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:24:37,847 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:24:37,991 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:37,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:38,452 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:38,526 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:38,526 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:24:38,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:38 BoogieIcfgContainer [2023-11-12 02:24:38,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:38,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:38,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:38,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:38,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:37" (1/3) ... [2023-11-12 02:24:38,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745ea254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:38, skipping insertion in model container [2023-11-12 02:24:38,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:37" (2/3) ... [2023-11-12 02:24:38,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745ea254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:38, skipping insertion in model container [2023-11-12 02:24:38,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:38" (3/3) ... [2023-11-12 02:24:38,548 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-11-12 02:24:38,558 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:24:38,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:38,571 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-12 02:24:38,571 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:24:38,708 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:24:38,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 265 transitions, 551 flow [2023-11-12 02:24:38,872 INFO L124 PetriNetUnfolderBase]: 20/262 cut-off events. [2023-11-12 02:24:38,872 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:24:38,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 262 events. 20/262 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 273 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 213. Up to 2 conditions per place. [2023-11-12 02:24:38,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 265 transitions, 551 flow [2023-11-12 02:24:38,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 238 transitions, 491 flow [2023-11-12 02:24:38,895 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:38,908 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 238 transitions, 491 flow [2023-11-12 02:24:38,913 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 238 transitions, 491 flow [2023-11-12 02:24:38,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 238 transitions, 491 flow [2023-11-12 02:24:38,986 INFO L124 PetriNetUnfolderBase]: 19/238 cut-off events. [2023-11-12 02:24:38,986 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:24:38,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 238 events. 19/238 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 269 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 213. Up to 2 conditions per place. [2023-11-12 02:24:38,995 INFO L119 LiptonReduction]: Number of co-enabled transitions 3642 [2023-11-12 02:24:48,234 INFO L134 LiptonReduction]: Checked pairs total: 5056 [2023-11-12 02:24:48,234 INFO L136 LiptonReduction]: Total number of compositions: 257 [2023-11-12 02:24:48,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:48,257 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;@78f97b25, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:48,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-12 02:24:48,260 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:24:48,260 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:24:48,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:48,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:48,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:24:48,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:48,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:48,265 INFO L85 PathProgramCache]: Analyzing trace with hash 31613, now seen corresponding path program 1 times [2023-11-12 02:24:48,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:48,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981163462] [2023-11-12 02:24:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:48,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:48,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:48,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981163462] [2023-11-12 02:24:48,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981163462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:48,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:48,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:24:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784646635] [2023-11-12 02:24:48,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:48,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:48,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:48,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:48,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 522 [2023-11-12 02:24:48,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:48,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:48,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 522 [2023-11-12 02:24:48,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:49,045 INFO L124 PetriNetUnfolderBase]: 1243/1760 cut-off events. [2023-11-12 02:24:49,045 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-11-12 02:24:49,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 1760 events. 1243/1760 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6466 event pairs, 925 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 3120. Up to 1756 conditions per place. [2023-11-12 02:24:49,065 INFO L140 encePairwiseOnDemand]: 507/522 looper letters, 40 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-11-12 02:24:49,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 203 flow [2023-11-12 02:24:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2023-11-12 02:24:49,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46807151979565775 [2023-11-12 02:24:49,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2023-11-12 02:24:49,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2023-11-12 02:24:49,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:49,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2023-11-12 02:24:49,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,139 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 101 flow. Second operand 3 states and 733 transitions. [2023-11-12 02:24:49,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 203 flow [2023-11-12 02:24:49,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 194 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:24:49,147 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 152 flow [2023-11-12 02:24:49,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2023-11-12 02:24:49,153 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-12 02:24:49,153 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 152 flow [2023-11-12 02:24:49,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:49,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:24:49,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:24:49,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:49,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash 981360, now seen corresponding path program 1 times [2023-11-12 02:24:49,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:49,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424051116] [2023-11-12 02:24:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:49,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:49,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:49,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424051116] [2023-11-12 02:24:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424051116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:49,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:49,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:49,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139834608] [2023-11-12 02:24:49,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:49,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 522 [2023-11-12 02:24:49,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:49,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 522 [2023-11-12 02:24:49,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:49,609 INFO L124 PetriNetUnfolderBase]: 1243/1757 cut-off events. [2023-11-12 02:24:49,609 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-12 02:24:49,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3608 conditions, 1757 events. 1243/1757 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6450 event pairs, 925 based on Foata normal form. 0/960 useless extension candidates. Maximal degree in co-relation 3549. Up to 1744 conditions per place. [2023-11-12 02:24:49,623 INFO L140 encePairwiseOnDemand]: 517/522 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-11-12 02:24:49,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 228 flow [2023-11-12 02:24:49,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:49,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:49,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2023-11-12 02:24:49,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591315453384419 [2023-11-12 02:24:49,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2023-11-12 02:24:49,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2023-11-12 02:24:49,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:49,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2023-11-12 02:24:49,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,639 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 152 flow. Second operand 3 states and 719 transitions. [2023-11-12 02:24:49,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 228 flow [2023-11-12 02:24:49,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:49,643 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 132 flow [2023-11-12 02:24:49,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2023-11-12 02:24:49,645 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-12 02:24:49,645 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 132 flow [2023-11-12 02:24:49,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:49,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:24:49,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:24:49,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:49,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:49,648 INFO L85 PathProgramCache]: Analyzing trace with hash 981361, now seen corresponding path program 1 times [2023-11-12 02:24:49,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:49,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239093298] [2023-11-12 02:24:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:49,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:49,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:49,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239093298] [2023-11-12 02:24:49,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239093298] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:49,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863824772] [2023-11-12 02:24:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:49,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:49,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:49,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:49,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:24:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:49,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:24:49,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:49,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:50,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863824772] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:50,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:50,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:24:50,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459225817] [2023-11-12 02:24:50,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:50,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:24:50,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:50,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:24:50,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:24:50,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 522 [2023-11-12 02:24:50,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 132 flow. Second operand has 7 states, 7 states have (on average 227.14285714285714) internal successors, (1590), 7 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:50,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:50,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 522 [2023-11-12 02:24:50,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:50,462 INFO L124 PetriNetUnfolderBase]: 1252/1775 cut-off events. [2023-11-12 02:24:50,462 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-12 02:24:50,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3661 conditions, 1775 events. 1252/1775 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6499 event pairs, 925 based on Foata normal form. 0/970 useless extension candidates. Maximal degree in co-relation 3549. Up to 1756 conditions per place. [2023-11-12 02:24:50,477 INFO L140 encePairwiseOnDemand]: 512/522 looper letters, 37 selfloop transitions, 25 changer transitions 0/62 dead transitions. [2023-11-12 02:24:50,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 334 flow [2023-11-12 02:24:50,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:24:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:24:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1427 transitions. [2023-11-12 02:24:50,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556194125159642 [2023-11-12 02:24:50,484 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1427 transitions. [2023-11-12 02:24:50,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1427 transitions. [2023-11-12 02:24:50,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:50,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1427 transitions. [2023-11-12 02:24:50,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.83333333333334) internal successors, (1427), 6 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:50,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:50,502 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:50,503 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 132 flow. Second operand 6 states and 1427 transitions. [2023-11-12 02:24:50,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 334 flow [2023-11-12 02:24:50,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:50,508 INFO L231 Difference]: Finished difference. Result has 46 places, 62 transitions, 301 flow [2023-11-12 02:24:50,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=46, PETRI_TRANSITIONS=62} [2023-11-12 02:24:50,510 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-11-12 02:24:50,510 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 62 transitions, 301 flow [2023-11-12 02:24:50,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.14285714285714) internal successors, (1590), 7 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:50,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:50,512 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:24:50,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:50,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:50,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:50,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash -827727810, now seen corresponding path program 2 times [2023-11-12 02:24:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:50,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772039119] [2023-11-12 02:24:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:50,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:50,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772039119] [2023-11-12 02:24:50,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772039119] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:50,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515183450] [2023-11-12 02:24:50,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:24:50,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:50,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:50,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:50,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:24:51,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:24:51,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:24:51,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:24:51,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:51,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:24:51,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:24:51,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515183450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:51,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:24:51,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:24:51,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149620540] [2023-11-12 02:24:51,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:51,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:51,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:51,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:51,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:24:51,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 522 [2023-11-12 02:24:51,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 62 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:51,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:51,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 522 [2023-11-12 02:24:51,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:51,347 INFO L124 PetriNetUnfolderBase]: 1252/1774 cut-off events. [2023-11-12 02:24:51,348 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-12 02:24:51,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3708 conditions, 1774 events. 1252/1774 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6515 event pairs, 925 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 3620. Up to 1769 conditions per place. [2023-11-12 02:24:51,364 INFO L140 encePairwiseOnDemand]: 519/522 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-11-12 02:24:51,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 413 flow [2023-11-12 02:24:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2023-11-12 02:24:51,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46871008939974457 [2023-11-12 02:24:51,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2023-11-12 02:24:51,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2023-11-12 02:24:51,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:51,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2023-11-12 02:24:51,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:51,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:51,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:51,412 INFO L175 Difference]: Start difference. First operand has 46 places, 62 transitions, 301 flow. Second operand 3 states and 734 transitions. [2023-11-12 02:24:51,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 413 flow [2023-11-12 02:24:51,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 376 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:51,423 INFO L231 Difference]: Finished difference. Result has 46 places, 61 transitions, 266 flow [2023-11-12 02:24:51,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=46, PETRI_TRANSITIONS=61} [2023-11-12 02:24:51,426 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-11-12 02:24:51,426 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 61 transitions, 266 flow [2023-11-12 02:24:51,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:51,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:51,427 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-12 02:24:51,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 02:24:51,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-12 02:24:51,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:51,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:51,633 INFO L85 PathProgramCache]: Analyzing trace with hash 786845233, now seen corresponding path program 1 times [2023-11-12 02:24:51,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:51,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446414692] [2023-11-12 02:24:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446414692] [2023-11-12 02:24:51,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446414692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664073176] [2023-11-12 02:24:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:51,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:51,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:51,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:51,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:24:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:51,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:24:51,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:24:51,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:24:51,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664073176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:51,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:24:51,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-12 02:24:51,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750958915] [2023-11-12 02:24:51,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:51,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:24:51,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:51,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:24:51,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:24:52,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 522 [2023-11-12 02:24:52,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 61 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:52,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:52,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 522 [2023-11-12 02:24:52,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:52,408 INFO L124 PetriNetUnfolderBase]: 1252/1776 cut-off events. [2023-11-12 02:24:52,408 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-12 02:24:52,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3701 conditions, 1776 events. 1252/1776 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6559 event pairs, 925 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 3621. Up to 1765 conditions per place. [2023-11-12 02:24:52,423 INFO L140 encePairwiseOnDemand]: 515/522 looper letters, 47 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2023-11-12 02:24:52,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 401 flow [2023-11-12 02:24:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:24:52,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:24:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 931 transitions. [2023-11-12 02:24:52,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44588122605363983 [2023-11-12 02:24:52,429 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 931 transitions. [2023-11-12 02:24:52,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 931 transitions. [2023-11-12 02:24:52,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:52,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 931 transitions. [2023-11-12 02:24:52,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:52,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:52,442 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:52,442 INFO L175 Difference]: Start difference. First operand has 46 places, 61 transitions, 266 flow. Second operand 4 states and 931 transitions. [2023-11-12 02:24:52,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 401 flow [2023-11-12 02:24:52,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:52,447 INFO L231 Difference]: Finished difference. Result has 48 places, 63 transitions, 312 flow [2023-11-12 02:24:52,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=48, PETRI_TRANSITIONS=63} [2023-11-12 02:24:52,450 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-11-12 02:24:52,450 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 63 transitions, 312 flow [2023-11-12 02:24:52,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:52,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:52,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:52,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:52,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:52,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:52,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1338325061, now seen corresponding path program 1 times [2023-11-12 02:24:52,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:52,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283448798] [2023-11-12 02:24:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:52,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:52,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:52,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283448798] [2023-11-12 02:24:52,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283448798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:52,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:52,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:52,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119932375] [2023-11-12 02:24:52,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:52,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:52,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:52,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:52,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:52,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 522 [2023-11-12 02:24:52,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 63 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:52,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:52,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 522 [2023-11-12 02:24:52,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:53,130 INFO L124 PetriNetUnfolderBase]: 1688/2356 cut-off events. [2023-11-12 02:24:53,130 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-12 02:24:53,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4901 conditions, 2356 events. 1688/2356 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9205 event pairs, 925 based on Foata normal form. 0/1326 useless extension candidates. Maximal degree in co-relation 4818. Up to 1849 conditions per place. [2023-11-12 02:24:53,149 INFO L140 encePairwiseOnDemand]: 517/522 looper letters, 80 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-11-12 02:24:53,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 83 transitions, 521 flow [2023-11-12 02:24:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-11-12 02:24:53,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49361430395913153 [2023-11-12 02:24:53,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-11-12 02:24:53,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-11-12 02:24:53,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:53,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-11-12 02:24:53,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:53,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:53,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:53,162 INFO L175 Difference]: Start difference. First operand has 48 places, 63 transitions, 312 flow. Second operand 3 states and 773 transitions. [2023-11-12 02:24:53,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 83 transitions, 521 flow [2023-11-12 02:24:53,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 83 transitions, 503 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:53,167 INFO L231 Difference]: Finished difference. Result has 50 places, 65 transitions, 315 flow [2023-11-12 02:24:53,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=50, PETRI_TRANSITIONS=65} [2023-11-12 02:24:53,168 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-11-12 02:24:53,168 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 65 transitions, 315 flow [2023-11-12 02:24:53,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:53,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:53,169 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-12 02:24:53,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:24:53,169 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:53,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash -200830946, now seen corresponding path program 1 times [2023-11-12 02:24:53,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:53,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545845460] [2023-11-12 02:24:53,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:53,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:24:53,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545845460] [2023-11-12 02:24:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545845460] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:53,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741503324] [2023-11-12 02:24:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:53,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:53,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:53,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:53,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:24:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:53,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:24:53,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:24:53,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:24:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741503324] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:53,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:53,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-11-12 02:24:53,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672484737] [2023-11-12 02:24:53,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:53,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 02:24:53,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 02:24:53,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:24:54,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 522 [2023-11-12 02:24:54,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 65 transitions, 315 flow. Second operand has 15 states, 15 states have (on average 216.33333333333334) internal successors, (3245), 15 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:54,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:54,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 522 [2023-11-12 02:24:54,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:55,071 INFO L124 PetriNetUnfolderBase]: 3365/4689 cut-off events. [2023-11-12 02:24:55,072 INFO L125 PetriNetUnfolderBase]: For 1028/1028 co-relation queries the response was YES. [2023-11-12 02:24:55,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10974 conditions, 4689 events. 3365/4689 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18943 event pairs, 2442 based on Foata normal form. 4/2922 useless extension candidates. Maximal degree in co-relation 10866. Up to 2332 conditions per place. [2023-11-12 02:24:55,115 INFO L140 encePairwiseOnDemand]: 513/522 looper letters, 65 selfloop transitions, 42 changer transitions 0/107 dead transitions. [2023-11-12 02:24:55,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 107 transitions, 691 flow [2023-11-12 02:24:55,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:24:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:24:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2687 transitions. [2023-11-12 02:24:55,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42895913154533843 [2023-11-12 02:24:55,127 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2687 transitions. [2023-11-12 02:24:55,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2687 transitions. [2023-11-12 02:24:55,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:55,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2687 transitions. [2023-11-12 02:24:55,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 223.91666666666666) internal successors, (2687), 12 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:55,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 522.0) internal successors, (6786), 13 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:55,152 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 522.0) internal successors, (6786), 13 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:55,152 INFO L175 Difference]: Start difference. First operand has 50 places, 65 transitions, 315 flow. Second operand 12 states and 2687 transitions. [2023-11-12 02:24:55,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 107 transitions, 691 flow [2023-11-12 02:24:55,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 107 transitions, 685 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:55,158 INFO L231 Difference]: Finished difference. Result has 61 places, 77 transitions, 492 flow [2023-11-12 02:24:55,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=492, PETRI_PLACES=61, PETRI_TRANSITIONS=77} [2023-11-12 02:24:55,159 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2023-11-12 02:24:55,159 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 77 transitions, 492 flow [2023-11-12 02:24:55,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 216.33333333333334) internal successors, (3245), 15 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:55,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:55,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:55,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:55,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:55,370 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:55,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:55,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1463666468, now seen corresponding path program 1 times [2023-11-12 02:24:55,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:55,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316371734] [2023-11-12 02:24:55,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:55,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:55,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:55,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316371734] [2023-11-12 02:24:55,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316371734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:55,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:55,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:55,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575966696] [2023-11-12 02:24:55,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:55,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 522 [2023-11-12 02:24:55,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 77 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:55,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:55,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 522 [2023-11-12 02:24:55,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:56,199 INFO L124 PetriNetUnfolderBase]: 4269/5841 cut-off events. [2023-11-12 02:24:56,199 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2023-11-12 02:24:56,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13271 conditions, 5841 events. 4269/5841 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 23989 event pairs, 2442 based on Foata normal form. 0/3623 useless extension candidates. Maximal degree in co-relation 13165. Up to 4938 conditions per place. [2023-11-12 02:24:56,250 INFO L140 encePairwiseOnDemand]: 517/522 looper letters, 96 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2023-11-12 02:24:56,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 99 transitions, 751 flow [2023-11-12 02:24:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-11-12 02:24:56,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49361430395913153 [2023-11-12 02:24:56,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-11-12 02:24:56,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-11-12 02:24:56,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:56,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-11-12 02:24:56,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:56,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:56,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:56,262 INFO L175 Difference]: Start difference. First operand has 61 places, 77 transitions, 492 flow. Second operand 3 states and 773 transitions. [2023-11-12 02:24:56,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 99 transitions, 751 flow [2023-11-12 02:24:56,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 99 transitions, 635 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-12 02:24:56,268 INFO L231 Difference]: Finished difference. Result has 56 places, 79 transitions, 397 flow [2023-11-12 02:24:56,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=397, PETRI_PLACES=56, PETRI_TRANSITIONS=79} [2023-11-12 02:24:56,271 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-11-12 02:24:56,271 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 79 transitions, 397 flow [2023-11-12 02:24:56,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:56,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:56,272 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-11-12 02:24:56,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:24:56,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:56,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1899825447, now seen corresponding path program 2 times [2023-11-12 02:24:56,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:56,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531750331] [2023-11-12 02:24:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:24:56,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:56,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531750331] [2023-11-12 02:24:56,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531750331] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:56,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009430829] [2023-11-12 02:24:56,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:24:56,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:56,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:56,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:56,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:24:56,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:24:56,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:24:56,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:24:56,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-12 02:24:56,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:24:56,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009430829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:56,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:24:56,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-11-12 02:24:56,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207202473] [2023-11-12 02:24:56,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:56,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:24:56,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:24:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:24:56,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 522 [2023-11-12 02:24:56,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 79 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 231.25) internal successors, (925), 4 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:56,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:56,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 522 [2023-11-12 02:24:56,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:57,336 INFO L124 PetriNetUnfolderBase]: 3613/4935 cut-off events. [2023-11-12 02:24:57,336 INFO L125 PetriNetUnfolderBase]: For 1939/1939 co-relation queries the response was YES. [2023-11-12 02:24:57,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13150 conditions, 4935 events. 3613/4935 cut-off events. For 1939/1939 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 18873 event pairs, 2442 based on Foata normal form. 2/3163 useless extension candidates. Maximal degree in co-relation 13074. Up to 4899 conditions per place. [2023-11-12 02:24:57,372 INFO L140 encePairwiseOnDemand]: 517/522 looper letters, 66 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2023-11-12 02:24:57,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 533 flow [2023-11-12 02:24:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:24:57,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:24:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 957 transitions. [2023-11-12 02:24:57,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-12 02:24:57,377 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 957 transitions. [2023-11-12 02:24:57,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 957 transitions. [2023-11-12 02:24:57,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:57,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 957 transitions. [2023-11-12 02:24:57,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:57,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:57,386 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:57,387 INFO L175 Difference]: Start difference. First operand has 56 places, 79 transitions, 397 flow. Second operand 4 states and 957 transitions. [2023-11-12 02:24:57,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 533 flow [2023-11-12 02:24:57,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 500 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:57,392 INFO L231 Difference]: Finished difference. Result has 53 places, 76 transitions, 368 flow [2023-11-12 02:24:57,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=53, PETRI_TRANSITIONS=76} [2023-11-12 02:24:57,393 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-11-12 02:24:57,393 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 76 transitions, 368 flow [2023-11-12 02:24:57,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.25) internal successors, (925), 4 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:57,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:57,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:57,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:57,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:57,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:57,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1870974849, now seen corresponding path program 1 times [2023-11-12 02:24:57,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:57,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393675140] [2023-11-12 02:24:57,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:57,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:57,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:57,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393675140] [2023-11-12 02:24:57,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393675140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:57,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972284673] [2023-11-12 02:24:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:57,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:57,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:57,667 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:57,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:24:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:57,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:24:57,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:57,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:24:57,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972284673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:57,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:24:57,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 02:24:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156502973] [2023-11-12 02:24:57,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:57,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:24:57,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:57,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:24:57,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:24:57,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 522 [2023-11-12 02:24:57,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 76 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 240.5) internal successors, (962), 4 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:57,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:57,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 522 [2023-11-12 02:24:57,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:58,360 INFO L124 PetriNetUnfolderBase]: 2957/4031 cut-off events. [2023-11-12 02:24:58,360 INFO L125 PetriNetUnfolderBase]: For 832/832 co-relation queries the response was YES. [2023-11-12 02:24:58,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10119 conditions, 4031 events. 2957/4031 cut-off events. For 832/832 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 15716 event pairs, 858 based on Foata normal form. 0/2959 useless extension candidates. Maximal degree in co-relation 10046. Up to 1976 conditions per place. [2023-11-12 02:24:58,388 INFO L140 encePairwiseOnDemand]: 518/522 looper letters, 111 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2023-11-12 02:24:58,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 115 transitions, 708 flow [2023-11-12 02:24:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:24:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:24:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1024 transitions. [2023-11-12 02:24:58,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904214559386973 [2023-11-12 02:24:58,394 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1024 transitions. [2023-11-12 02:24:58,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1024 transitions. [2023-11-12 02:24:58,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:58,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1024 transitions. [2023-11-12 02:24:58,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:58,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:58,419 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:58,419 INFO L175 Difference]: Start difference. First operand has 53 places, 76 transitions, 368 flow. Second operand 4 states and 1024 transitions. [2023-11-12 02:24:58,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 115 transitions, 708 flow [2023-11-12 02:24:58,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 115 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:58,426 INFO L231 Difference]: Finished difference. Result has 53 places, 75 transitions, 361 flow [2023-11-12 02:24:58,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=53, PETRI_TRANSITIONS=75} [2023-11-12 02:24:58,427 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-11-12 02:24:58,427 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 75 transitions, 361 flow [2023-11-12 02:24:58,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.5) internal successors, (962), 4 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:58,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:58,428 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:58,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:58,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:58,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:24:58,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1935117954, now seen corresponding path program 1 times [2023-11-12 02:24:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323332484] [2023-11-12 02:24:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:58,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323332484] [2023-11-12 02:24:58,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323332484] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637232830] [2023-11-12 02:24:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:58,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:58,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:58,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:58,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:24:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:58,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:24:58,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:24:58,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:24:58,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637232830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:58,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:24:58,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-11-12 02:24:58,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719278065] [2023-11-12 02:24:58,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:58,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:24:58,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:58,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:24:58,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:24:59,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 522 [2023-11-12 02:24:59,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 75 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:59,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:59,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 522 [2023-11-12 02:24:59,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:59,802 INFO L124 PetriNetUnfolderBase]: 3509/4818 cut-off events. [2023-11-12 02:24:59,802 INFO L125 PetriNetUnfolderBase]: For 3809/3809 co-relation queries the response was YES. [2023-11-12 02:24:59,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13260 conditions, 4818 events. 3509/4818 cut-off events. For 3809/3809 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 18845 event pairs, 2175 based on Foata normal form. 58/3910 useless extension candidates. Maximal degree in co-relation 13187. Up to 4013 conditions per place. [2023-11-12 02:24:59,832 INFO L140 encePairwiseOnDemand]: 512/522 looper letters, 89 selfloop transitions, 25 changer transitions 2/116 dead transitions. [2023-11-12 02:24:59,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 116 transitions, 720 flow [2023-11-12 02:24:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:24:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:24:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1381 transitions. [2023-11-12 02:24:59,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409323116219668 [2023-11-12 02:24:59,838 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1381 transitions. [2023-11-12 02:24:59,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1381 transitions. [2023-11-12 02:24:59,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:59,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1381 transitions. [2023-11-12 02:24:59,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.16666666666666) internal successors, (1381), 6 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:59,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:59,849 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:59,850 INFO L175 Difference]: Start difference. First operand has 53 places, 75 transitions, 361 flow. Second operand 6 states and 1381 transitions. [2023-11-12 02:24:59,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 116 transitions, 720 flow [2023-11-12 02:24:59,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 116 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:59,858 INFO L231 Difference]: Finished difference. Result has 58 places, 77 transitions, 426 flow [2023-11-12 02:24:59,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=426, PETRI_PLACES=58, PETRI_TRANSITIONS=77} [2023-11-12 02:24:59,859 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2023-11-12 02:24:59,859 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 77 transitions, 426 flow [2023-11-12 02:24:59,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:59,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:59,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:59,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:00,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:00,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:25:00,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:00,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1678792128, now seen corresponding path program 1 times [2023-11-12 02:25:00,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:00,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650347677] [2023-11-12 02:25:00,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:00,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:00,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:00,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650347677] [2023-11-12 02:25:00,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650347677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:00,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:00,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:00,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221003578] [2023-11-12 02:25:00,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:00,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:00,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:00,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:00,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:00,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 522 [2023-11-12 02:25:00,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 77 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:00,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:00,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 522 [2023-11-12 02:25:00,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:00,976 INFO L124 PetriNetUnfolderBase]: 5149/7004 cut-off events. [2023-11-12 02:25:00,976 INFO L125 PetriNetUnfolderBase]: For 5190/5190 co-relation queries the response was YES. [2023-11-12 02:25:00,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18779 conditions, 7004 events. 5149/7004 cut-off events. For 5190/5190 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 29261 event pairs, 2291 based on Foata normal form. 0/5580 useless extension candidates. Maximal degree in co-relation 18700. Up to 4819 conditions per place. [2023-11-12 02:25:01,026 INFO L140 encePairwiseOnDemand]: 518/522 looper letters, 99 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-11-12 02:25:01,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 720 flow [2023-11-12 02:25:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 770 transitions. [2023-11-12 02:25:01,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49169859514687103 [2023-11-12 02:25:01,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 770 transitions. [2023-11-12 02:25:01,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 770 transitions. [2023-11-12 02:25:01,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:01,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 770 transitions. [2023-11-12 02:25:01,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:01,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:01,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:01,036 INFO L175 Difference]: Start difference. First operand has 58 places, 77 transitions, 426 flow. Second operand 3 states and 770 transitions. [2023-11-12 02:25:01,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 720 flow [2023-11-12 02:25:01,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 677 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:25:01,043 INFO L231 Difference]: Finished difference. Result has 58 places, 78 transitions, 397 flow [2023-11-12 02:25:01,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=397, PETRI_PLACES=58, PETRI_TRANSITIONS=78} [2023-11-12 02:25:01,044 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2023-11-12 02:25:01,044 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 78 transitions, 397 flow [2023-11-12 02:25:01,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:01,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:01,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:01,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:25:01,045 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:25:01,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:01,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1236349113, now seen corresponding path program 1 times [2023-11-12 02:25:01,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:01,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127131802] [2023-11-12 02:25:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:01,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:25:01,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:01,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127131802] [2023-11-12 02:25:01,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127131802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:01,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722544337] [2023-11-12 02:25:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:01,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:01,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:01,111 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:01,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:25:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:01,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:25:01,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:01,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:01,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722544337] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:01,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:01,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-11-12 02:25:01,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425377423] [2023-11-12 02:25:01,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:01,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:25:01,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:01,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:25:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:25:01,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 522 [2023-11-12 02:25:01,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 78 transitions, 397 flow. Second operand has 13 states, 13 states have (on average 212.53846153846155) internal successors, (2763), 13 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:01,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:01,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 522 [2023-11-12 02:25:01,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:02,987 INFO L124 PetriNetUnfolderBase]: 5349/7294 cut-off events. [2023-11-12 02:25:02,988 INFO L125 PetriNetUnfolderBase]: For 4726/4726 co-relation queries the response was YES. [2023-11-12 02:25:03,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20582 conditions, 7294 events. 5349/7294 cut-off events. For 4726/4726 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 30246 event pairs, 1912 based on Foata normal form. 82/5974 useless extension candidates. Maximal degree in co-relation 20506. Up to 2457 conditions per place. [2023-11-12 02:25:03,048 INFO L140 encePairwiseOnDemand]: 509/522 looper letters, 141 selfloop transitions, 39 changer transitions 3/183 dead transitions. [2023-11-12 02:25:03,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 183 transitions, 1125 flow [2023-11-12 02:25:03,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:25:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:25:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2455 transitions. [2023-11-12 02:25:03,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275513758272379 [2023-11-12 02:25:03,057 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2455 transitions. [2023-11-12 02:25:03,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2455 transitions. [2023-11-12 02:25:03,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:03,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2455 transitions. [2023-11-12 02:25:03,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 223.1818181818182) internal successors, (2455), 11 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:03,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 522.0) internal successors, (6264), 12 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:03,076 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 522.0) internal successors, (6264), 12 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:03,076 INFO L175 Difference]: Start difference. First operand has 58 places, 78 transitions, 397 flow. Second operand 11 states and 2455 transitions. [2023-11-12 02:25:03,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 183 transitions, 1125 flow [2023-11-12 02:25:03,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 183 transitions, 1113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:03,089 INFO L231 Difference]: Finished difference. Result has 70 places, 85 transitions, 536 flow [2023-11-12 02:25:03,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=536, PETRI_PLACES=70, PETRI_TRANSITIONS=85} [2023-11-12 02:25:03,090 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2023-11-12 02:25:03,090 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 85 transitions, 536 flow [2023-11-12 02:25:03,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 212.53846153846155) internal successors, (2763), 13 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:03,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:03,092 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:03,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:03,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:03,297 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:25:03,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1588379916, now seen corresponding path program 1 times [2023-11-12 02:25:03,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:03,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645026987] [2023-11-12 02:25:03,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:03,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:03,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:03,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645026987] [2023-11-12 02:25:03,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645026987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:03,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663836592] [2023-11-12 02:25:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:03,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:03,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:03,377 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:03,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:25:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:03,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:25:03,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:25:03,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:03,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663836592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:03,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:25:03,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-11-12 02:25:03,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498842739] [2023-11-12 02:25:03,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:03,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:03,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:03,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:03,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 522 [2023-11-12 02:25:03,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 85 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 220.8) internal successors, (1104), 5 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:03,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:03,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 522 [2023-11-12 02:25:03,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:04,510 INFO L124 PetriNetUnfolderBase]: 4779/6520 cut-off events. [2023-11-12 02:25:04,510 INFO L125 PetriNetUnfolderBase]: For 8469/8469 co-relation queries the response was YES. [2023-11-12 02:25:04,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20170 conditions, 6520 events. 4779/6520 cut-off events. For 8469/8469 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 26119 event pairs, 3027 based on Foata normal form. 0/5487 useless extension candidates. Maximal degree in co-relation 20084. Up to 6119 conditions per place. [2023-11-12 02:25:04,566 INFO L140 encePairwiseOnDemand]: 512/522 looper letters, 59 selfloop transitions, 17 changer transitions 38/114 dead transitions. [2023-11-12 02:25:04,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 114 transitions, 868 flow [2023-11-12 02:25:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:04,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1378 transitions. [2023-11-12 02:25:04,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4399744572158365 [2023-11-12 02:25:04,572 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1378 transitions. [2023-11-12 02:25:04,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1378 transitions. [2023-11-12 02:25:04,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:04,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1378 transitions. [2023-11-12 02:25:04,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.66666666666666) internal successors, (1378), 6 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:04,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:04,583 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:04,583 INFO L175 Difference]: Start difference. First operand has 70 places, 85 transitions, 536 flow. Second operand 6 states and 1378 transitions. [2023-11-12 02:25:04,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 114 transitions, 868 flow [2023-11-12 02:25:04,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 114 transitions, 817 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-12 02:25:04,598 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 456 flow [2023-11-12 02:25:04,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=456, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2023-11-12 02:25:04,599 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2023-11-12 02:25:04,599 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 456 flow [2023-11-12 02:25:04,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.8) internal successors, (1104), 5 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:04,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:04,600 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:04,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:04,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 02:25:04,806 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:25:04,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1069654175, now seen corresponding path program 1 times [2023-11-12 02:25:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:04,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343867267] [2023-11-12 02:25:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:04,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 02:25:04,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:04,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343867267] [2023-11-12 02:25:04,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343867267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:04,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827970008] [2023-11-12 02:25:04,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:04,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:04,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:04,900 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:04,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:25:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:05,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:25:05,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 02:25:05,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:05,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827970008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:05,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:25:05,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 02:25:05,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087529218] [2023-11-12 02:25:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:05,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:05,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:05,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:05,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:05,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 522 [2023-11-12 02:25:05,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 241.25) internal successors, (965), 4 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:05,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:05,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 522 [2023-11-12 02:25:05,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:05,692 INFO L124 PetriNetUnfolderBase]: 4208/5732 cut-off events. [2023-11-12 02:25:05,692 INFO L125 PetriNetUnfolderBase]: For 4863/4863 co-relation queries the response was YES. [2023-11-12 02:25:05,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17949 conditions, 5732 events. 4208/5732 cut-off events. For 4863/4863 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 23698 event pairs, 1090 based on Foata normal form. 164/5211 useless extension candidates. Maximal degree in co-relation 17860. Up to 2491 conditions per place. [2023-11-12 02:25:05,734 INFO L140 encePairwiseOnDemand]: 518/522 looper letters, 102 selfloop transitions, 9 changer transitions 0/111 dead transitions. [2023-11-12 02:25:05,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 800 flow [2023-11-12 02:25:05,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:05,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:05,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1018 transitions. [2023-11-12 02:25:05,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875478927203065 [2023-11-12 02:25:05,739 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1018 transitions. [2023-11-12 02:25:05,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1018 transitions. [2023-11-12 02:25:05,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:05,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1018 transitions. [2023-11-12 02:25:05,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:05,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:05,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:05,748 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 456 flow. Second operand 4 states and 1018 transitions. [2023-11-12 02:25:05,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 800 flow [2023-11-12 02:25:05,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 111 transitions, 686 flow, removed 16 selfloop flow, removed 9 redundant places. [2023-11-12 02:25:05,778 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 360 flow [2023-11-12 02:25:05,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=360, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2023-11-12 02:25:05,778 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-11-12 02:25:05,779 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 360 flow [2023-11-12 02:25:05,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.25) internal successors, (965), 4 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:05,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:05,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:05,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:05,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 02:25:05,985 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:25:05,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1315729347, now seen corresponding path program 1 times [2023-11-12 02:25:05,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:05,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503263751] [2023-11-12 02:25:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:05,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:25:06,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:06,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503263751] [2023-11-12 02:25:06,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503263751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:06,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163294835] [2023-11-12 02:25:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:06,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:06,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:06,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:06,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:25:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:06,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:25:06,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:06,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:25:06,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163294835] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:06,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:06,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-11-12 02:25:06,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292778183] [2023-11-12 02:25:06,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:06,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:25:06,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:06,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:25:06,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:25:06,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-11-12 02:25:06,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 360 flow. Second operand has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:06,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:06,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-11-12 02:25:06,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:07,860 INFO L124 PetriNetUnfolderBase]: 4722/6396 cut-off events. [2023-11-12 02:25:07,860 INFO L125 PetriNetUnfolderBase]: For 6553/6553 co-relation queries the response was YES. [2023-11-12 02:25:07,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18891 conditions, 6396 events. 4722/6396 cut-off events. For 6553/6553 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 25520 event pairs, 986 based on Foata normal form. 0/5284 useless extension candidates. Maximal degree in co-relation 18819. Up to 1903 conditions per place. [2023-11-12 02:25:07,889 INFO L140 encePairwiseOnDemand]: 508/522 looper letters, 123 selfloop transitions, 22 changer transitions 88/233 dead transitions. [2023-11-12 02:25:07,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 233 transitions, 1521 flow [2023-11-12 02:25:07,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:25:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-12 02:25:07,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3123 transitions. [2023-11-12 02:25:07,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273399014778325 [2023-11-12 02:25:07,900 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3123 transitions. [2023-11-12 02:25:07,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3123 transitions. [2023-11-12 02:25:07,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:07,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3123 transitions. [2023-11-12 02:25:07,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 223.07142857142858) internal successors, (3123), 14 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:07,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 522.0) internal successors, (7830), 15 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:07,924 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 522.0) internal successors, (7830), 15 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:07,925 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 360 flow. Second operand 14 states and 3123 transitions. [2023-11-12 02:25:07,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 233 transitions, 1521 flow [2023-11-12 02:25:07,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 233 transitions, 1455 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:07,937 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 376 flow [2023-11-12 02:25:07,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=376, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-11-12 02:25:07,938 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2023-11-12 02:25:07,938 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 376 flow [2023-11-12 02:25:07,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:07,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:07,940 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:07,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:08,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 02:25:08,146 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:25:08,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1440521633, now seen corresponding path program 2 times [2023-11-12 02:25:08,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:08,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133512284] [2023-11-12 02:25:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:08,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 02:25:08,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133512284] [2023-11-12 02:25:08,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133512284] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485212556] [2023-11-12 02:25:08,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:25:08,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:08,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:08,273 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:08,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 02:25:08,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:25:08,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:25:08,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:25:08,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-12 02:25:08,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-12 02:25:08,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485212556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:08,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:08,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2023-11-12 02:25:08,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919364283] [2023-11-12 02:25:08,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:08,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:25:08,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:25:08,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:08,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 522 [2023-11-12 02:25:08,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:08,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:08,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 522 [2023-11-12 02:25:08,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:09,300 INFO L124 PetriNetUnfolderBase]: 4683/6214 cut-off events. [2023-11-12 02:25:09,300 INFO L125 PetriNetUnfolderBase]: For 6904/6904 co-relation queries the response was YES. [2023-11-12 02:25:09,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20326 conditions, 6214 events. 4683/6214 cut-off events. For 6904/6904 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 24705 event pairs, 1155 based on Foata normal form. 0/5747 useless extension candidates. Maximal degree in co-relation 20244. Up to 2732 conditions per place. [2023-11-12 02:25:09,337 INFO L140 encePairwiseOnDemand]: 516/522 looper letters, 135 selfloop transitions, 11 changer transitions 15/161 dead transitions. [2023-11-12 02:25:09,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 161 transitions, 1140 flow [2023-11-12 02:25:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:25:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:25:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1742 transitions. [2023-11-12 02:25:09,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767378215654078 [2023-11-12 02:25:09,342 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1742 transitions. [2023-11-12 02:25:09,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1742 transitions. [2023-11-12 02:25:09,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:09,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1742 transitions. [2023-11-12 02:25:09,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 248.85714285714286) internal successors, (1742), 7 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:09,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 522.0) internal successors, (4176), 8 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:09,355 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 522.0) internal successors, (4176), 8 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:09,355 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 376 flow. Second operand 7 states and 1742 transitions. [2023-11-12 02:25:09,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 161 transitions, 1140 flow [2023-11-12 02:25:09,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 161 transitions, 1082 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-11-12 02:25:09,375 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 386 flow [2023-11-12 02:25:09,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-11-12 02:25:09,376 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-11-12 02:25:09,376 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 386 flow [2023-11-12 02:25:09,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:09,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:09,377 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:09,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-12 02:25:09,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:25:09,582 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:25:09,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1207968262, now seen corresponding path program 1 times [2023-11-12 02:25:09,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:09,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733370600] [2023-11-12 02:25:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 02:25:09,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:09,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733370600] [2023-11-12 02:25:09,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733370600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:09,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309129178] [2023-11-12 02:25:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:09,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:09,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:09,691 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:09,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 02:25:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:09,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:25:09,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 02:25:09,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:09,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309129178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:09,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:25:09,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 02:25:09,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393508240] [2023-11-12 02:25:09,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:09,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:09,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:09,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:09,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 522 [2023-11-12 02:25:09,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:09,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:09,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 522 [2023-11-12 02:25:09,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:10,350 INFO L124 PetriNetUnfolderBase]: 3255/4322 cut-off events. [2023-11-12 02:25:10,350 INFO L125 PetriNetUnfolderBase]: For 8734/8734 co-relation queries the response was YES. [2023-11-12 02:25:10,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14087 conditions, 4322 events. 3255/4322 cut-off events. For 8734/8734 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 15372 event pairs, 307 based on Foata normal form. 232/4087 useless extension candidates. Maximal degree in co-relation 14009. Up to 2568 conditions per place. [2023-11-12 02:25:10,370 INFO L140 encePairwiseOnDemand]: 519/522 looper letters, 109 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-11-12 02:25:10,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 111 transitions, 854 flow [2023-11-12 02:25:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1013 transitions. [2023-11-12 02:25:10,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48515325670498083 [2023-11-12 02:25:10,374 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1013 transitions. [2023-11-12 02:25:10,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1013 transitions. [2023-11-12 02:25:10,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:10,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1013 transitions. [2023-11-12 02:25:10,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.25) internal successors, (1013), 4 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) [2023-11-12 02:25:10,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,382 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,382 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 386 flow. Second operand 4 states and 1013 transitions. [2023-11-12 02:25:10,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 111 transitions, 854 flow [2023-11-12 02:25:10,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 111 transitions, 747 flow, removed 28 selfloop flow, removed 6 redundant places. [2023-11-12 02:25:10,398 INFO L231 Difference]: Finished difference. Result has 56 places, 65 transitions, 329 flow [2023-11-12 02:25:10,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=56, PETRI_TRANSITIONS=65} [2023-11-12 02:25:10,399 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-11-12 02:25:10,399 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 65 transitions, 329 flow [2023-11-12 02:25:10,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:10,400 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:10,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:10,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:25:10,606 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:25:10,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1216216504, now seen corresponding path program 2 times [2023-11-12 02:25:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:10,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63856217] [2023-11-12 02:25:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:10,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 02:25:10,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63856217] [2023-11-12 02:25:10,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63856217] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558714248] [2023-11-12 02:25:10,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:25:10,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:10,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:10,843 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:10,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-12 02:25:11,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:25:11,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:25:11,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:25:11,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-12 02:25:11,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-12 02:25:11,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558714248] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:11,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:11,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-11-12 02:25:11,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270351493] [2023-11-12 02:25:11,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:11,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:25:11,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:11,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:25:11,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:25:11,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-11-12 02:25:11,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 65 transitions, 329 flow. Second operand has 10 states, 10 states have (on average 214.7) internal successors, (2147), 10 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:11,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:11,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-11-12 02:25:11,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:12,506 INFO L124 PetriNetUnfolderBase]: 7181/9425 cut-off events. [2023-11-12 02:25:12,506 INFO L125 PetriNetUnfolderBase]: For 10673/10673 co-relation queries the response was YES. [2023-11-12 02:25:12,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27316 conditions, 9425 events. 7181/9425 cut-off events. For 10673/10673 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 37407 event pairs, 854 based on Foata normal form. 0/8375 useless extension candidates. Maximal degree in co-relation 27203. Up to 3244 conditions per place. [2023-11-12 02:25:12,625 INFO L140 encePairwiseOnDemand]: 510/522 looper letters, 0 selfloop transitions, 0 changer transitions 235/235 dead transitions. [2023-11-12 02:25:12,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 235 transitions, 1555 flow [2023-11-12 02:25:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:25:12,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-12 02:25:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3306 transitions. [2023-11-12 02:25:12,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2023-11-12 02:25:12,631 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3306 transitions. [2023-11-12 02:25:12,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3306 transitions. [2023-11-12 02:25:12,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:12,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3306 transitions. [2023-11-12 02:25:12,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 220.4) internal successors, (3306), 15 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 522.0) internal successors, (8352), 16 states have internal predecessors, (8352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,645 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 522.0) internal successors, (8352), 16 states have internal predecessors, (8352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,645 INFO L175 Difference]: Start difference. First operand has 56 places, 65 transitions, 329 flow. Second operand 15 states and 3306 transitions. [2023-11-12 02:25:12,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 235 transitions, 1555 flow [2023-11-12 02:25:12,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 235 transitions, 1549 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:12,682 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2023-11-12 02:25:12,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2023-11-12 02:25:12,683 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-11-12 02:25:12,683 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2023-11-12 02:25:12,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 214.7) internal successors, (2147), 10 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2023-11-12 02:25:12,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-12 02:25:12,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-12 02:25:12,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-12 02:25:12,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-12 02:25:12,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-12 02:25:12,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-12 02:25:12,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-12 02:25:12,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-12 02:25:12,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-12 02:25:12,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-12 02:25:12,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-12 02:25:12,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-12 02:25:12,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-12 02:25:12,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2023-11-12 02:25:12,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2023-11-12 02:25:12,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2023-11-12 02:25:12,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-12 02:25:12,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-12 02:25:12,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-12 02:25:12,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-12 02:25:12,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-12 02:25:12,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-12 02:25:12,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-12 02:25:12,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-12 02:25:12,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:12,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:12,901 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:12,907 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:25:12,907 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:25:12,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:25:12 BasicIcfg [2023-11-12 02:25:12,912 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:25:12,912 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:25:12,912 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:25:12,913 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:25:12,913 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:38" (3/4) ... [2023-11-12 02:25:12,915 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:25:12,918 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-12 02:25:12,918 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-12 02:25:12,918 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-12 02:25:12,928 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-12 02:25:12,928 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:25:12,929 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:25:12,929 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:25:13,049 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:25:13,050 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:25:13,050 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:25:13,051 INFO L158 Benchmark]: Toolchain (without parser) took 35751.72ms. Allocated memory was 138.4MB in the beginning and 675.3MB in the end (delta: 536.9MB). Free memory was 95.1MB in the beginning and 566.6MB in the end (delta: -471.5MB). Peak memory consumption was 66.6MB. Max. memory is 16.1GB. [2023-11-12 02:25:13,051 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 92.3MB. Free memory is still 37.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:25:13,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.88ms. Allocated memory is still 138.4MB. Free memory was 95.1MB in the beginning and 82.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:25:13,052 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.13ms. Allocated memory is still 138.4MB. Free memory was 82.9MB in the beginning and 80.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:25:13,052 INFO L158 Benchmark]: Boogie Preprocessor took 61.70ms. Allocated memory is still 138.4MB. Free memory was 80.8MB in the beginning and 79.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:25:13,053 INFO L158 Benchmark]: RCFGBuilder took 764.72ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 79.1MB in the beginning and 145.4MB in the end (delta: -66.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2023-11-12 02:25:13,053 INFO L158 Benchmark]: TraceAbstraction took 34374.00ms. Allocated memory was 176.2MB in the beginning and 675.3MB in the end (delta: 499.1MB). Free memory was 145.4MB in the beginning and 573.1MB in the end (delta: -427.7MB). Peak memory consumption was 444.3MB. Max. memory is 16.1GB. [2023-11-12 02:25:13,053 INFO L158 Benchmark]: Witness Printer took 137.72ms. Allocated memory is still 675.3MB. Free memory was 573.1MB in the beginning and 566.6MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 02:25:13,056 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 92.3MB. Free memory is still 37.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.88ms. Allocated memory is still 138.4MB. Free memory was 95.1MB in the beginning and 82.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.13ms. Allocated memory is still 138.4MB. Free memory was 82.9MB in the beginning and 80.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.70ms. Allocated memory is still 138.4MB. Free memory was 80.8MB in the beginning and 79.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 764.72ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 79.1MB in the beginning and 145.4MB in the end (delta: -66.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * TraceAbstraction took 34374.00ms. Allocated memory was 176.2MB in the beginning and 675.3MB in the end (delta: 499.1MB). Free memory was 145.4MB in the beginning and 573.1MB in the end (delta: -427.7MB). Peak memory consumption was 444.3MB. Max. memory is 16.1GB. * Witness Printer took 137.72ms. Allocated memory is still 675.3MB. Free memory was 573.1MB in the beginning and 566.6MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.3s, 229 PlacesBefore, 46 PlacesAfterwards, 238 TransitionsBefore, 43 TransitionsAfterwards, 3642 CoEnabledTransitionPairs, 6 FixpointIterations, 150 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 257 TotalNumberOfCompositions, 5056 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3370, independent: 3276, independent conditional: 0, independent unconditional: 3276, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1934, independent: 1904, independent conditional: 0, independent unconditional: 1904, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3370, independent: 1372, independent conditional: 0, independent unconditional: 1372, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 1934, unknown conditional: 0, unknown unconditional: 1934] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 93, Positive conditional cache size: 0, Positive unconditional cache size: 93, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: 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 7 procedures, 303 locations, 25 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: 34.2s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3293 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2540 mSDsluCounter, 1356 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1106 mSDsCounter, 356 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6857 IncrementalHoareTripleChecker+Invalid, 7213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 356 mSolverCounterUnsat, 250 mSDtfsCounter, 6857 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 197 SyntacticMatches, 6 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=536occurred in iteration=13, InterpolantAutomatonStates: 115, 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: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 382 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 1106 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2598 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 39 InterpolantComputations, 13 PerfectInterpolantSequences, 205/287 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! [2023-11-12 02:25:13,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7af7053f-063f-47ff-b267-b15c2aefbc0e/bin/uautomizer-verify-uTZkv6EMXl/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