./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/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_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/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_d27e93d9-8f13-43fe-b1de-4893285e2f01/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 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:17:59,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:17:59,603 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:17:59,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:17:59,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:17:59,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:17:59,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:17:59,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:17:59,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:17:59,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:17:59,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:17:59,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:17:59,642 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:17:59,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:17:59,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:17:59,643 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:17:59,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:17:59,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:17:59,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:17:59,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:17:59,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:17:59,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:17:59,647 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:17:59,647 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:17:59,647 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:17:59,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:17:59,648 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:17:59,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:17:59,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:17:59,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:17:59,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:59,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:17:59,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:17:59,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:17:59,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:17:59,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:17:59,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:17:59,652 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:17:59,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:17:59,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:17:59,652 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:17:59,653 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_d27e93d9-8f13-43fe-b1de-4893285e2f01/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2023-11-12 02:17:59,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:17:59,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:17:59,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:17:59,979 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:17:59,979 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:17:59,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-11-12 02:18:03,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:03,496 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:03,497 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-11-12 02:18:03,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/data/a8628b495/c28027c3537444109bca6cad98a93f66/FLAG7b2a190c4 [2023-11-12 02:18:03,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/data/a8628b495/c28027c3537444109bca6cad98a93f66 [2023-11-12 02:18:03,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:03,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:03,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:03,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:03,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:03,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b99a269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03, skipping insertion in model container [2023-11-12 02:18:03,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,590 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:03,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:03,818 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:03,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:03,855 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:03,855 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:03,864 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:18:03,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03 WrapperNode [2023-11-12 02:18:03,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:03,866 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:03,866 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:18:03,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:18:03,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,919 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-11-12 02:18:03,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:03,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:18:03,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:18:03,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:18:03,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,940 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,940 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,960 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:18:03,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:18:03,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:18:03,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:18:03,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (1/1) ... [2023-11-12 02:18:03,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:04,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:04,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:18:04,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:18:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:18:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:18:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:18:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:18:04,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:18:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:18:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:18:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:18:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:18:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:18:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:18:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:18:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:18:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:18:04,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:18:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:18:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:18:04,096 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:18:04,302 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:18:04,306 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:18:04,747 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:18:04,836 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:18:04,836 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 02:18:04,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:04 BoogieIcfgContainer [2023-11-12 02:18:04,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:18:04,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:18:04,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:18:04,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:18:04,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:03" (1/3) ... [2023-11-12 02:18:04,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4ba964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:04, skipping insertion in model container [2023-11-12 02:18:04,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:03" (2/3) ... [2023-11-12 02:18:04,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4ba964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:04, skipping insertion in model container [2023-11-12 02:18:04,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:04" (3/3) ... [2023-11-12 02:18:04,851 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2023-11-12 02:18:04,884 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:18:04,902 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:18:04,902 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 02:18:04,902 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:18:05,026 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:18:05,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 177 transitions, 375 flow [2023-11-12 02:18:05,203 INFO L124 PetriNetUnfolderBase]: 12/174 cut-off events. [2023-11-12 02:18:05,207 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:18:05,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 174 events. 12/174 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 166 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 128. Up to 2 conditions per place. [2023-11-12 02:18:05,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 177 transitions, 375 flow [2023-11-12 02:18:05,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 150 transitions, 315 flow [2023-11-12 02:18:05,238 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:18:05,253 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 150 transitions, 315 flow [2023-11-12 02:18:05,256 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 150 transitions, 315 flow [2023-11-12 02:18:05,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 150 transitions, 315 flow [2023-11-12 02:18:05,303 INFO L124 PetriNetUnfolderBase]: 11/150 cut-off events. [2023-11-12 02:18:05,303 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:18:05,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 150 events. 11/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 163 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 128. Up to 2 conditions per place. [2023-11-12 02:18:05,309 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-11-12 02:18:12,912 INFO L134 LiptonReduction]: Checked pairs total: 2866 [2023-11-12 02:18:12,912 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-11-12 02:18:12,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:12,936 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;@755bb22e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:12,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-12 02:18:12,940 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:12,940 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:18:12,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:12,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:12,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:18:12,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:12,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:12,947 INFO L85 PathProgramCache]: Analyzing trace with hash 22335, now seen corresponding path program 1 times [2023-11-12 02:18:12,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:12,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070921974] [2023-11-12 02:18:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:12,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:13,293 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 02:18:13,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070921974] [2023-11-12 02:18:13,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070921974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:13,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:13,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:13,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676440768] [2023-11-12 02:18:13,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:13,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:13,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:13,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:13,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 332 [2023-11-12 02:18:13,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 02:18:13,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:13,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 332 [2023-11-12 02:18:13,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:13,731 INFO L124 PetriNetUnfolderBase]: 848/1223 cut-off events. [2023-11-12 02:18:13,731 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-12 02:18:13,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 1223 events. 848/1223 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4372 event pairs, 652 based on Foata normal form. 0/637 useless extension candidates. Maximal degree in co-relation 2150. Up to 1223 conditions per place. [2023-11-12 02:18:13,747 INFO L140 encePairwiseOnDemand]: 327/332 looper letters, 29 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-11-12 02:18:13,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 143 flow [2023-11-12 02:18:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-11-12 02:18:13,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979919678714859 [2023-11-12 02:18:13,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-11-12 02:18:13,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-11-12 02:18:13,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:13,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-11-12 02:18:13,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 02:18:13,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:13,793 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:13,795 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 496 transitions. [2023-11-12 02:18:13,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 143 flow [2023-11-12 02:18:13,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:18:13,806 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 87 flow [2023-11-12 02:18:13,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-11-12 02:18:13,814 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-12 02:18:13,814 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 87 flow [2023-11-12 02:18:13,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 02:18:13,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:13,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:18:13,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:13,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:13,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash 694012, now seen corresponding path program 1 times [2023-11-12 02:18:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:13,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481088564] [2023-11-12 02:18:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:13,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:13,989 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 02:18:13,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:13,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481088564] [2023-11-12 02:18:13,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481088564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:13,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:13,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:13,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590687755] [2023-11-12 02:18:13,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:13,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:13,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:14,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 332 [2023-11-12 02:18:14,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 02:18:14,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:14,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 332 [2023-11-12 02:18:14,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:14,272 INFO L124 PetriNetUnfolderBase]: 848/1222 cut-off events. [2023-11-12 02:18:14,272 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-12 02:18:14,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2512 conditions, 1222 events. 848/1222 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4355 event pairs, 652 based on Foata normal form. 0/637 useless extension candidates. Maximal degree in co-relation 2488. Up to 1219 conditions per place. [2023-11-12 02:18:14,286 INFO L140 encePairwiseOnDemand]: 329/332 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-12 02:18:14,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 145 flow [2023-11-12 02:18:14,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:14,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-11-12 02:18:14,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939759036144578 [2023-11-12 02:18:14,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-11-12 02:18:14,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-11-12 02:18:14,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:14,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-11-12 02:18:14,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 02:18:14,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:14,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:14,306 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 87 flow. Second operand 3 states and 492 transitions. [2023-11-12 02:18:14,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 145 flow [2023-11-12 02:18:14,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 140 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:14,310 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 84 flow [2023-11-12 02:18:14,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-11-12 02:18:14,316 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-12 02:18:14,316 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 84 flow [2023-11-12 02:18:14,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 02:18:14,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:14,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:18:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:18:14,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:14,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:14,322 INFO L85 PathProgramCache]: Analyzing trace with hash 694027, now seen corresponding path program 1 times [2023-11-12 02:18:14,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:14,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515414812] [2023-11-12 02:18:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:14,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:14,452 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 02:18:14,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515414812] [2023-11-12 02:18:14,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515414812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:18:14,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280200643] [2023-11-12 02:18:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:14,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:14,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:14,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:14,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:18:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:14,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:18:14,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:14,594 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 02:18:14,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:18:14,612 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 02:18:14,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280200643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:18:14,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:18:14,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:18:14,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884072285] [2023-11-12 02:18:14,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:18:14,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:14,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:14,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:14,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 332 [2023-11-12 02:18:14,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 155.14285714285714) internal successors, (1086), 7 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 02:18:14,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:14,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 332 [2023-11-12 02:18:14,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:14,869 INFO L124 PetriNetUnfolderBase]: 851/1228 cut-off events. [2023-11-12 02:18:14,869 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-12 02:18:14,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 1228 events. 851/1228 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4388 event pairs, 652 based on Foata normal form. 0/645 useless extension candidates. Maximal degree in co-relation 2488. Up to 1225 conditions per place. [2023-11-12 02:18:14,880 INFO L140 encePairwiseOnDemand]: 328/332 looper letters, 28 selfloop transitions, 9 changer transitions 0/37 dead transitions. [2023-11-12 02:18:14,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 188 flow [2023-11-12 02:18:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:18:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:18:14,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 964 transitions. [2023-11-12 02:18:14,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4839357429718876 [2023-11-12 02:18:14,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 964 transitions. [2023-11-12 02:18:14,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 964 transitions. [2023-11-12 02:18:14,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:14,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 964 transitions. [2023-11-12 02:18:14,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states 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 02:18:14,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 02:18:14,896 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 02:18:14,897 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 84 flow. Second operand 6 states and 964 transitions. [2023-11-12 02:18:14,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 188 flow [2023-11-12 02:18:14,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:14,899 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 139 flow [2023-11-12 02:18:14,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2023-11-12 02:18:14,900 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-11-12 02:18:14,900 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 139 flow [2023-11-12 02:18:14,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 155.14285714285714) internal successors, (1086), 7 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 02:18:14,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:14,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:18:14,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:18:15,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:15,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:15,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash 666809385, now seen corresponding path program 1 times [2023-11-12 02:18:15,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:15,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179033791] [2023-11-12 02:18:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:15,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:15,198 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 02:18:15,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:15,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179033791] [2023-11-12 02:18:15,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179033791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:15,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:15,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:15,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784339664] [2023-11-12 02:18:15,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:15,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:15,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:15,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:15,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:15,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 332 [2023-11-12 02:18:15,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 02:18:15,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:15,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 332 [2023-11-12 02:18:15,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:15,508 INFO L124 PetriNetUnfolderBase]: 1060/1499 cut-off events. [2023-11-12 02:18:15,508 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-12 02:18:15,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3103 conditions, 1499 events. 1060/1499 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5586 event pairs, 652 based on Foata normal form. 0/787 useless extension candidates. Maximal degree in co-relation 3067. Up to 1291 conditions per place. [2023-11-12 02:18:15,521 INFO L140 encePairwiseOnDemand]: 327/332 looper letters, 51 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-11-12 02:18:15,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 284 flow [2023-11-12 02:18:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-11-12 02:18:15,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180722891566265 [2023-11-12 02:18:15,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-11-12 02:18:15,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-11-12 02:18:15,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:15,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-11-12 02:18:15,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 02:18:15,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:15,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:15,534 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 139 flow. Second operand 3 states and 516 transitions. [2023-11-12 02:18:15,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 284 flow [2023-11-12 02:18:15,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 263 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:15,540 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 139 flow [2023-11-12 02:18:15,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-11-12 02:18:15,547 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-11-12 02:18:15,547 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 139 flow [2023-11-12 02:18:15,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 02:18:15,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:15,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:18:15,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:18:15,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:15,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:15,552 INFO L85 PathProgramCache]: Analyzing trace with hash -803743945, now seen corresponding path program 1 times [2023-11-12 02:18:15,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:15,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49207280] [2023-11-12 02:18:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:15,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:15,609 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 02:18:15,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:15,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49207280] [2023-11-12 02:18:15,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49207280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:15,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:15,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:15,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751238655] [2023-11-12 02:18:15,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:15,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:15,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:15,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:15,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 332 [2023-11-12 02:18:15,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 02:18:15,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:15,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 332 [2023-11-12 02:18:15,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:15,860 INFO L124 PetriNetUnfolderBase]: 913/1290 cut-off events. [2023-11-12 02:18:15,860 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2023-11-12 02:18:15,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3162 conditions, 1290 events. 913/1290 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4902 event pairs, 277 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 3129. Up to 689 conditions per place. [2023-11-12 02:18:15,872 INFO L140 encePairwiseOnDemand]: 329/332 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-11-12 02:18:15,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 274 flow [2023-11-12 02:18:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-11-12 02:18:15,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140562248995983 [2023-11-12 02:18:15,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-11-12 02:18:15,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-11-12 02:18:15,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:15,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-11-12 02:18:15,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 02:18:15,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:15,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:15,882 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 139 flow. Second operand 3 states and 512 transitions. [2023-11-12 02:18:15,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 274 flow [2023-11-12 02:18:15,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 269 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:15,888 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 136 flow [2023-11-12 02:18:15,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-11-12 02:18:15,891 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-11-12 02:18:15,891 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 136 flow [2023-11-12 02:18:15,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 02:18:15,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:15,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:18:15,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:18:15,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:15,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash -803743928, now seen corresponding path program 1 times [2023-11-12 02:18:15,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:15,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153894178] [2023-11-12 02:18:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:15,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:15,988 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 02:18:15,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153894178] [2023-11-12 02:18:15,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153894178] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:18:15,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980460793] [2023-11-12 02:18:15,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:15,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:15,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:15,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:16,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:18:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:16,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:18:16,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:18:16,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:18:16,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980460793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:16,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:18:16,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 02:18:16,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435208538] [2023-11-12 02:18:16,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:16,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:16,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:16,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:16,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:16,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 332 [2023-11-12 02:18:16,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 02:18:16,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:16,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 332 [2023-11-12 02:18:16,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:16,353 INFO L124 PetriNetUnfolderBase]: 912/1289 cut-off events. [2023-11-12 02:18:16,353 INFO L125 PetriNetUnfolderBase]: For 636/636 co-relation queries the response was YES. [2023-11-12 02:18:16,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3158 conditions, 1289 events. 912/1289 cut-off events. For 636/636 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4444 event pairs, 652 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 3129. Up to 1289 conditions per place. [2023-11-12 02:18:16,363 INFO L140 encePairwiseOnDemand]: 329/332 looper letters, 35 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-12 02:18:16,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 205 flow [2023-11-12 02:18:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-11-12 02:18:16,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879518072289157 [2023-11-12 02:18:16,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-11-12 02:18:16,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-11-12 02:18:16,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:16,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-11-12 02:18:16,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 02:18:16,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:16,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:16,372 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 136 flow. Second operand 3 states and 486 transitions. [2023-11-12 02:18:16,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 205 flow [2023-11-12 02:18:16,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:16,374 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 129 flow [2023-11-12 02:18:16,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-12 02:18:16,375 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-11-12 02:18:16,375 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 129 flow [2023-11-12 02:18:16,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 02:18:16,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:16,376 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:18:16,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:16,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:16,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:16,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash -797909362, now seen corresponding path program 2 times [2023-11-12 02:18:16,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:16,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084682439] [2023-11-12 02:18:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:16,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:16,698 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 02:18:16,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:16,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084682439] [2023-11-12 02:18:16,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084682439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:18:16,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351621427] [2023-11-12 02:18:16,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:18:16,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:16,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:16,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:16,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:18:16,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:18:16,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:18:16,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:18:16,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:16,805 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 02:18:16,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:18:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351621427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:16,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:18:16,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:18:16,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221447829] [2023-11-12 02:18:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:16,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:16,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:16,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:16,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:18:16,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 332 [2023-11-12 02:18:16,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 02:18:16,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:16,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 332 [2023-11-12 02:18:16,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:17,044 INFO L124 PetriNetUnfolderBase]: 912/1288 cut-off events. [2023-11-12 02:18:17,044 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-11-12 02:18:17,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2968 conditions, 1288 events. 912/1288 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4448 event pairs, 652 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 2951. Up to 1283 conditions per place. [2023-11-12 02:18:17,054 INFO L140 encePairwiseOnDemand]: 329/332 looper letters, 31 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2023-11-12 02:18:17,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 191 flow [2023-11-12 02:18:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-11-12 02:18:17,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979919678714859 [2023-11-12 02:18:17,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-11-12 02:18:17,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-11-12 02:18:17,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:17,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-11-12 02:18:17,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 02:18:17,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:17,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:17,064 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 129 flow. Second operand 3 states and 496 transitions. [2023-11-12 02:18:17,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 191 flow [2023-11-12 02:18:17,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 172 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-12 02:18:17,066 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 110 flow [2023-11-12 02:18:17,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-11-12 02:18:17,067 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-11-12 02:18:17,067 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 110 flow [2023-11-12 02:18:17,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 02:18:17,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:17,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:17,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:17,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:17,274 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:17,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:17,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1028780165, now seen corresponding path program 1 times [2023-11-12 02:18:17,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:17,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121235644] [2023-11-12 02:18:17,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:17,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:18:17,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:17,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121235644] [2023-11-12 02:18:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121235644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:18:17,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845511520] [2023-11-12 02:18:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:17,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:17,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:17,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:17,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:18:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:17,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:18:17,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:18:17,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:18:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:18:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845511520] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:18:17,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:18:17,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:18:17,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412154467] [2023-11-12 02:18:17,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:18:17,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:17,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:17,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:17,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 332 [2023-11-12 02:18:17,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 110 flow. Second operand has 7 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 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 02:18:17,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:17,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 332 [2023-11-12 02:18:17,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:17,964 INFO L124 PetriNetUnfolderBase]: 1539/2101 cut-off events. [2023-11-12 02:18:17,965 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-12 02:18:17,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4989 conditions, 2101 events. 1539/2101 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7942 event pairs, 527 based on Foata normal form. 0/1197 useless extension candidates. Maximal degree in co-relation 4953. Up to 1266 conditions per place. [2023-11-12 02:18:17,981 INFO L140 encePairwiseOnDemand]: 328/332 looper letters, 93 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2023-11-12 02:18:17,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 102 transitions, 470 flow [2023-11-12 02:18:17,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:18:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:18:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1034 transitions. [2023-11-12 02:18:17,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190763052208835 [2023-11-12 02:18:17,986 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1034 transitions. [2023-11-12 02:18:17,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1034 transitions. [2023-11-12 02:18:17,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:17,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1034 transitions. [2023-11-12 02:18:17,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 172.33333333333334) internal successors, (1034), 6 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states 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 02:18:17,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 02:18:17,996 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 02:18:17,996 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 110 flow. Second operand 6 states and 1034 transitions. [2023-11-12 02:18:17,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 102 transitions, 470 flow [2023-11-12 02:18:17,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 102 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:18,001 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 161 flow [2023-11-12 02:18:18,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-11-12 02:18:18,003 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-11-12 02:18:18,004 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 161 flow [2023-11-12 02:18:18,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 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 02:18:18,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:18,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:18,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:18,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:18,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:18,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1831173216, now seen corresponding path program 1 times [2023-11-12 02:18:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:18,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433689959] [2023-11-12 02:18:18,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:18,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:18:18,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:18,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433689959] [2023-11-12 02:18:18,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433689959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:18,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:18,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:18,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465493162] [2023-11-12 02:18:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:18,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:18,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:18,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:18,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 332 [2023-11-12 02:18:18,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 02:18:18,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:18,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 332 [2023-11-12 02:18:18,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:18,694 INFO L124 PetriNetUnfolderBase]: 1945/2613 cut-off events. [2023-11-12 02:18:18,694 INFO L125 PetriNetUnfolderBase]: For 3000/3000 co-relation queries the response was YES. [2023-11-12 02:18:18,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 2613 events. 1945/2613 cut-off events. For 3000/3000 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9445 event pairs, 1027 based on Foata normal form. 0/1710 useless extension candidates. Maximal degree in co-relation 7605. Up to 2208 conditions per place. [2023-11-12 02:18:18,728 INFO L140 encePairwiseOnDemand]: 327/332 looper letters, 63 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-11-12 02:18:18,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 403 flow [2023-11-12 02:18:18,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-11-12 02:18:18,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150602409638554 [2023-11-12 02:18:18,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-11-12 02:18:18,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-11-12 02:18:18,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:18,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-11-12 02:18:18,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 02:18:18,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:18,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:18,738 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 161 flow. Second operand 3 states and 513 transitions. [2023-11-12 02:18:18,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 403 flow [2023-11-12 02:18:18,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 66 transitions, 361 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:18,744 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 161 flow [2023-11-12 02:18:18,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-11-12 02:18:18,746 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-11-12 02:18:18,746 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 161 flow [2023-11-12 02:18:18,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 02:18:18,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:18,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:18,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:18:18,748 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:18,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash 931795519, now seen corresponding path program 1 times [2023-11-12 02:18:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:18,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399777648] [2023-11-12 02:18:18,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:18,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:18:18,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:18,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399777648] [2023-11-12 02:18:18,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399777648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:18:18,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265924043] [2023-11-12 02:18:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:18,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:18,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:18,832 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:18,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:18:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:18,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:18:18,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:19,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:18:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265924043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:18:19,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:18:19,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-12 02:18:19,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041020072] [2023-11-12 02:18:19,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:18:19,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:18:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:18:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:18:19,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 332 [2023-11-12 02:18:19,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 161 flow. Second operand has 12 states, 12 states have (on average 144.16666666666666) internal successors, (1730), 12 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states 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 02:18:19,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:19,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 332 [2023-11-12 02:18:19,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:20,227 INFO L124 PetriNetUnfolderBase]: 3489/4724 cut-off events. [2023-11-12 02:18:20,227 INFO L125 PetriNetUnfolderBase]: For 3743/3743 co-relation queries the response was YES. [2023-11-12 02:18:20,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14104 conditions, 4724 events. 3489/4724 cut-off events. For 3743/3743 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 19875 event pairs, 1166 based on Foata normal form. 0/3339 useless extension candidates. Maximal degree in co-relation 10549. Up to 1799 conditions per place. [2023-11-12 02:18:20,267 INFO L140 encePairwiseOnDemand]: 324/332 looper letters, 154 selfloop transitions, 12 changer transitions 0/166 dead transitions. [2023-11-12 02:18:20,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 166 transitions, 958 flow [2023-11-12 02:18:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:20,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:18:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1394 transitions. [2023-11-12 02:18:20,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46653279785809904 [2023-11-12 02:18:20,273 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1394 transitions. [2023-11-12 02:18:20,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1394 transitions. [2023-11-12 02:18:20,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:20,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1394 transitions. [2023-11-12 02:18:20,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 154.88888888888889) internal successors, (1394), 9 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states 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 02:18:20,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 02:18:20,286 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 02:18:20,286 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 161 flow. Second operand 9 states and 1394 transitions. [2023-11-12 02:18:20,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 166 transitions, 958 flow [2023-11-12 02:18:20,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 166 transitions, 951 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:20,302 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 218 flow [2023-11-12 02:18:20,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-11-12 02:18:20,304 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2023-11-12 02:18:20,304 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 218 flow [2023-11-12 02:18:20,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.16666666666666) internal successors, (1730), 12 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states 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 02:18:20,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:20,306 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:20,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:20,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:18:20,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:20,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:20,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1570335461, now seen corresponding path program 1 times [2023-11-12 02:18:20,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:20,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118846516] [2023-11-12 02:18:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:20,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:18:20,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:20,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118846516] [2023-11-12 02:18:20,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118846516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:20,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:20,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:20,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626387411] [2023-11-12 02:18:20,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:20,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:20,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:20,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:20,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 332 [2023-11-12 02:18:20,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 02:18:20,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:20,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 332 [2023-11-12 02:18:20,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:21,105 INFO L124 PetriNetUnfolderBase]: 3083/4212 cut-off events. [2023-11-12 02:18:21,105 INFO L125 PetriNetUnfolderBase]: For 3573/3573 co-relation queries the response was YES. [2023-11-12 02:18:21,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13560 conditions, 4212 events. 3083/4212 cut-off events. For 3573/3573 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17572 event pairs, 952 based on Foata normal form. 212/3423 useless extension candidates. Maximal degree in co-relation 9893. Up to 2136 conditions per place. [2023-11-12 02:18:21,137 INFO L140 encePairwiseOnDemand]: 329/332 looper letters, 63 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-11-12 02:18:21,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 69 transitions, 427 flow [2023-11-12 02:18:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-11-12 02:18:21,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5110441767068273 [2023-11-12 02:18:21,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-11-12 02:18:21,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-11-12 02:18:21,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:21,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-11-12 02:18:21,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 02:18:21,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:21,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:21,146 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 218 flow. Second operand 3 states and 509 transitions. [2023-11-12 02:18:21,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 69 transitions, 427 flow [2023-11-12 02:18:21,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 406 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-12 02:18:21,169 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 195 flow [2023-11-12 02:18:21,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-12 02:18:21,170 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2023-11-12 02:18:21,170 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 195 flow [2023-11-12 02:18:21,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 02:18:21,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:21,171 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:18:21,171 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:21,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -495123060, now seen corresponding path program 2 times [2023-11-12 02:18:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:21,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143838554] [2023-11-12 02:18:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:21,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:18:21,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143838554] [2023-11-12 02:18:21,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143838554] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:18:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23439318] [2023-11-12 02:18:21,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:18:21,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:21,364 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:21,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:18:21,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:18:21,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:18:21,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:18:21,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-12 02:18:21,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:18:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23439318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:21,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:18:21,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-12 02:18:21,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841827309] [2023-11-12 02:18:21,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:21,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:21,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:21,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:21,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:21,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 332 [2023-11-12 02:18:21,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 02:18:21,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:21,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 332 [2023-11-12 02:18:21,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:21,912 INFO L124 PetriNetUnfolderBase]: 2313/3152 cut-off events. [2023-11-12 02:18:21,912 INFO L125 PetriNetUnfolderBase]: For 4328/4328 co-relation queries the response was YES. [2023-11-12 02:18:21,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9964 conditions, 3152 events. 2313/3152 cut-off events. For 4328/4328 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11810 event pairs, 1468 based on Foata normal form. 104/2741 useless extension candidates. Maximal degree in co-relation 7178. Up to 3152 conditions per place. [2023-11-12 02:18:21,935 INFO L140 encePairwiseOnDemand]: 329/332 looper letters, 44 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-12 02:18:21,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 273 flow [2023-11-12 02:18:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:21,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-11-12 02:18:21,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49899598393574296 [2023-11-12 02:18:21,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-11-12 02:18:21,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-11-12 02:18:21,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:21,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-11-12 02:18:21,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states 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 02:18:21,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:21,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:21,944 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 195 flow. Second operand 3 states and 497 transitions. [2023-11-12 02:18:21,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 273 flow [2023-11-12 02:18:21,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 245 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-12 02:18:21,956 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 157 flow [2023-11-12 02:18:21,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-11-12 02:18:21,957 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-11-12 02:18:21,958 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 157 flow [2023-11-12 02:18:21,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 02:18:21,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:21,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:21,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:22,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 02:18:22,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:22,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1177033399, now seen corresponding path program 1 times [2023-11-12 02:18:22,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:22,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296209598] [2023-11-12 02:18:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:22,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:18:22,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296209598] [2023-11-12 02:18:22,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296209598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:22,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:22,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2593723] [2023-11-12 02:18:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:22,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:18:22,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:18:22,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:18:22,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 332 [2023-11-12 02:18:22,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 02:18:22,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:22,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 332 [2023-11-12 02:18:22,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:22,567 INFO L124 PetriNetUnfolderBase]: 1837/2510 cut-off events. [2023-11-12 02:18:22,567 INFO L125 PetriNetUnfolderBase]: For 1137/1137 co-relation queries the response was YES. [2023-11-12 02:18:22,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6773 conditions, 2510 events. 1837/2510 cut-off events. For 1137/1137 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9174 event pairs, 780 based on Foata normal form. 0/2135 useless extension candidates. Maximal degree in co-relation 6761. Up to 1696 conditions per place. [2023-11-12 02:18:22,577 INFO L140 encePairwiseOnDemand]: 328/332 looper letters, 50 selfloop transitions, 5 changer transitions 15/70 dead transitions. [2023-11-12 02:18:22,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 393 flow [2023-11-12 02:18:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:18:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:18:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 652 transitions. [2023-11-12 02:18:22,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49096385542168675 [2023-11-12 02:18:22,581 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 652 transitions. [2023-11-12 02:18:22,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 652 transitions. [2023-11-12 02:18:22,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:22,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 652 transitions. [2023-11-12 02:18:22,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 02:18:22,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 02:18:22,587 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 02:18:22,587 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 157 flow. Second operand 4 states and 652 transitions. [2023-11-12 02:18:22,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 393 flow [2023-11-12 02:18:22,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:22,593 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 128 flow [2023-11-12 02:18:22,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-11-12 02:18:22,594 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-11-12 02:18:22,594 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 128 flow [2023-11-12 02:18:22,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 02:18:22,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:22,595 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:22,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:18:22,595 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:18:22,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1570335485, now seen corresponding path program 2 times [2023-11-12 02:18:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:22,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666330968] [2023-11-12 02:18:22,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:22,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:22,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:22,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666330968] [2023-11-12 02:18:22,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666330968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:18:22,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578719038] [2023-11-12 02:18:22,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:18:22,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:22,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:22,751 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:22,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:18:22,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:18:22,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:18:22,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:18:22,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:18:22,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:18:22,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578719038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:22,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:18:22,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [7] total 8 [2023-11-12 02:18:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252269328] [2023-11-12 02:18:22,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:22,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:22,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:22,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:22,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:18:22,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 332 [2023-11-12 02:18:22,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 02:18:22,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:22,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 332 [2023-11-12 02:18:22,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:23,018 INFO L124 PetriNetUnfolderBase]: 734/1002 cut-off events. [2023-11-12 02:18:23,018 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2023-11-12 02:18:23,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2762 conditions, 1002 events. 734/1002 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2907 event pairs, 435 based on Foata normal form. 0/968 useless extension candidates. Maximal degree in co-relation 2750. Up to 1002 conditions per place. [2023-11-12 02:18:23,021 INFO L140 encePairwiseOnDemand]: 330/332 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-11-12 02:18:23,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 192 flow [2023-11-12 02:18:23,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-11-12 02:18:23,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929718875502008 [2023-11-12 02:18:23,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-11-12 02:18:23,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-11-12 02:18:23,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:23,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-11-12 02:18:23,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 02:18:23,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:23,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 02:18:23,030 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 128 flow. Second operand 3 states and 491 transitions. [2023-11-12 02:18:23,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 192 flow [2023-11-12 02:18:23,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:18:23,034 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-11-12 02:18:23,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-11-12 02:18:23,035 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-11-12 02:18:23,036 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-11-12 02:18:23,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 02:18:23,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-11-12 02:18:23,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-12 02:18:23,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-12 02:18:23,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-12 02:18:23,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-12 02:18:23,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-12 02:18:23,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-12 02:18:23,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-12 02:18:23,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-11-12 02:18:23,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-11-12 02:18:23,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-11-12 02:18:23,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-12 02:18:23,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-12 02:18:23,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-12 02:18:23,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-12 02:18:23,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-12 02:18:23,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-12 02:18:23,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:23,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:23,250 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:23,256 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:18:23,256 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:18:23,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:18:23 BasicIcfg [2023-11-12 02:18:23,260 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:18:23,260 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:18:23,260 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:18:23,260 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:18:23,261 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:04" (3/4) ... [2023-11-12 02:18:23,263 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:18:23,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-12 02:18:23,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-12 02:18:23,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-12 02:18:23,272 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-12 02:18:23,272 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:18:23,272 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:18:23,273 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:18:23,357 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:18:23,358 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:18:23,358 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:18:23,358 INFO L158 Benchmark]: Toolchain (without parser) took 19815.44ms. Allocated memory was 169.9MB in the beginning and 379.6MB in the end (delta: 209.7MB). Free memory was 124.4MB in the beginning and 161.9MB in the end (delta: -37.5MB). Peak memory consumption was 173.5MB. Max. memory is 16.1GB. [2023-11-12 02:18:23,359 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory was 67.8MB in the beginning and 67.7MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:18:23,359 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.18ms. Allocated memory is still 169.9MB. Free memory was 124.1MB in the beginning and 112.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:18:23,360 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.84ms. Allocated memory is still 169.9MB. Free memory was 112.2MB in the beginning and 110.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:18:23,360 INFO L158 Benchmark]: Boogie Preprocessor took 59.31ms. Allocated memory is still 169.9MB. Free memory was 110.2MB in the beginning and 108.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:18:23,360 INFO L158 Benchmark]: RCFGBuilder took 859.39ms. Allocated memory is still 169.9MB. Free memory was 108.5MB in the beginning and 86.1MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-12 02:18:23,361 INFO L158 Benchmark]: TraceAbstraction took 18416.82ms. Allocated memory was 169.9MB in the beginning and 379.6MB in the end (delta: 209.7MB). Free memory was 85.5MB in the beginning and 167.2MB in the end (delta: -81.7MB). Peak memory consumption was 129.5MB. Max. memory is 16.1GB. [2023-11-12 02:18:23,361 INFO L158 Benchmark]: Witness Printer took 97.76ms. Allocated memory is still 379.6MB. Free memory was 167.2MB in the beginning and 161.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 02:18:23,363 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory was 67.8MB in the beginning and 67.7MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.18ms. Allocated memory is still 169.9MB. Free memory was 124.1MB in the beginning and 112.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.84ms. Allocated memory is still 169.9MB. Free memory was 112.2MB in the beginning and 110.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.31ms. Allocated memory is still 169.9MB. Free memory was 110.2MB in the beginning and 108.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 859.39ms. Allocated memory is still 169.9MB. Free memory was 108.5MB in the beginning and 86.1MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 18416.82ms. Allocated memory was 169.9MB in the beginning and 379.6MB in the end (delta: 209.7MB). Free memory was 85.5MB in the beginning and 167.2MB in the end (delta: -81.7MB). Peak memory consumption was 129.5MB. Max. memory is 16.1GB. * Witness Printer took 97.76ms. Allocated memory is still 379.6MB. Free memory was 167.2MB in the beginning and 161.9MB in the end (delta: 5.2MB). 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: 7.7s, 149 PlacesBefore, 36 PlacesAfterwards, 150 TransitionsBefore, 30 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 7 FixpointIterations, 77 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 155 TotalNumberOfCompositions, 2866 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2577, independent: 2549, independent conditional: 0, independent unconditional: 2549, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1446, independent: 1433, independent conditional: 0, independent unconditional: 1433, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2577, independent: 1116, independent conditional: 0, independent unconditional: 1116, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 1446, unknown conditional: 0, unknown unconditional: 1446] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: 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: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: 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, 214 locations, 17 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: 18.2s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 860 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 634 mSDsluCounter, 319 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 234 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1735 IncrementalHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 85 mSDtfsCounter, 1735 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=10, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 149 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 382 SizeOfPredicates, 8 NumberOfNonLiveVariables, 817 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 24 InterpolantComputations, 11 PerfectInterpolantSequences, 52/81 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:18:23,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27e93d9-8f13-43fe-b1de-4893285e2f01/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