./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya --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 dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:56:53,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:56:53,586 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 02:56:53,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:56:53,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:56:53,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:56:53,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:56:53,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:56:53,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:56:53,616 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:56:53,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:56:53,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:56:53,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:56:53,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:56:53,619 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:56:53,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:56:53,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:56:53,621 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:56:53,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:56:53,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:56:53,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:56:53,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:56:53,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:56:53,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:56:53,624 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 02:56:53,624 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:56:53,625 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:56:53,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:56:53,625 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:56:53,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:56:53,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:56:53,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:56:53,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:56:53,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:56:53,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:56:53,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:56:53,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:56:53,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:56:53,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:56:53,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:56:53,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:56:53,630 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:56:53,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:56:53,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:56:53,631 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_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2023-11-29 02:56:53,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:56:53,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:56:53,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:56:53,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:56:53,853 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:56:53,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-29 02:56:56,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:56:56,837 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:56:56,838 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-29 02:56:56,846 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/data/d2f4f01f4/98256f27d85a46b89e4f13b975a6fe05/FLAG89f549202 [2023-11-29 02:56:56,858 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/data/d2f4f01f4/98256f27d85a46b89e4f13b975a6fe05 [2023-11-29 02:56:56,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:56:56,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:56:56,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:56:56,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:56:56,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:56:56,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:56:56" (1/1) ... [2023-11-29 02:56:56,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ce1e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:56, skipping insertion in model container [2023-11-29 02:56:56,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:56:56" (1/1) ... [2023-11-29 02:56:56,893 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:56:57,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:56:57,072 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:56:57,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:56:57,108 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:56:57,108 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:56:57,117 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:56:57,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57 WrapperNode [2023-11-29 02:56:57,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:56:57,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:56:57,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:56:57,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:56:57,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,165 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 110 [2023-11-29 02:56:57,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:56:57,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:56:57,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:56:57,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:56:57,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,201 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 2, 7, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 02:56:57,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:56:57,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:56:57,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:56:57,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:56:57,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (1/1) ... [2023-11-29 02:56:57,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:56:57,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:56:57,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:56:57,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:56:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:56:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 02:56:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 02:56:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 02:56:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 02:56:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 02:56:57,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 02:56:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:56:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:56:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:56:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:56:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 02:56:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:56:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:56:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:56:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:56:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:56:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 02:56:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 02:56:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 02:56:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:56:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:56:57,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:56:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:56:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:56:57,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:56:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:56:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 02:56:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:56:57,298 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 02:56:57,456 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:56:57,458 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:56:57,741 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:56:57,962 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:56:57,962 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 02:56:57,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:56:57 BoogieIcfgContainer [2023-11-29 02:56:57,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:56:57,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:56:57,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:56:57,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:56:57,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:56:56" (1/3) ... [2023-11-29 02:56:57,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338725dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:56:57, skipping insertion in model container [2023-11-29 02:56:57,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:56:57" (2/3) ... [2023-11-29 02:56:57,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338725dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:56:57, skipping insertion in model container [2023-11-29 02:56:57,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:56:57" (3/3) ... [2023-11-29 02:56:57,972 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-11-29 02:56:57,982 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 02:56:57,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:56:57,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 02:56:57,994 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:56:58,050 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 02:56:58,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 43 transitions, 107 flow [2023-11-29 02:56:58,113 INFO L124 PetriNetUnfolderBase]: 3/40 cut-off events. [2023-11-29 02:56:58,113 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 02:56:58,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 3/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-29 02:56:58,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 43 transitions, 107 flow [2023-11-29 02:56:58,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 36 transitions, 84 flow [2023-11-29 02:56:58,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:56:58,138 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;@652618c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:56:58,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-29 02:56:58,142 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:56:58,142 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 02:56:58,142 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:56:58,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:58,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 02:56:58,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:56:58,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:58,149 INFO L85 PathProgramCache]: Analyzing trace with hash 437758, now seen corresponding path program 1 times [2023-11-29 02:56:58,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:58,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892095106] [2023-11-29 02:56:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:58,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:58,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:58,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892095106] [2023-11-29 02:56:58,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892095106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:58,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:58,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:56:58,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611688900] [2023-11-29 02:56:58,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:58,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:56:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:58,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:56:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:56:58,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-29 02:56:58,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:58,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:58,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-29 02:56:58,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:58,705 INFO L124 PetriNetUnfolderBase]: 227/430 cut-off events. [2023-11-29 02:56:58,705 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-29 02:56:58,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 430 events. 227/430 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1989 event pairs, 171 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 722. Up to 353 conditions per place. [2023-11-29 02:56:58,713 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 22 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-11-29 02:56:58,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 142 flow [2023-11-29 02:56:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:56:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:56:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2023-11-29 02:56:58,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2023-11-29 02:56:58,729 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 92 transitions. [2023-11-29 02:56:58,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 92 transitions. [2023-11-29 02:56:58,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:58,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 92 transitions. [2023-11-29 02:56:58,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:58,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:58,740 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:58,742 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 84 flow. Second operand 4 states and 92 transitions. [2023-11-29 02:56:58,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 142 flow [2023-11-29 02:56:58,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 02:56:58,750 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 107 flow [2023-11-29 02:56:58,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-11-29 02:56:58,755 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-11-29 02:56:58,756 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 107 flow [2023-11-29 02:56:58,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:58,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:58,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 02:56:58,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:56:58,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:56:58,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash 156777721, now seen corresponding path program 1 times [2023-11-29 02:56:58,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:58,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157320203] [2023-11-29 02:56:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:58,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:58,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157320203] [2023-11-29 02:56:58,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157320203] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:56:58,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856950627] [2023-11-29 02:56:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:58,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:56:58,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:56:58,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:56:58,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:56:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:59,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:56:59,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:56:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:59,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:56:59,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856950627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:59,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:56:59,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 02:56:59,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355537433] [2023-11-29 02:56:59,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:59,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:56:59,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:59,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:56:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:56:59,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-29 02:56:59,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:59,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:59,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-29 02:56:59,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:59,215 INFO L124 PetriNetUnfolderBase]: 227/417 cut-off events. [2023-11-29 02:56:59,215 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 02:56:59,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 417 events. 227/417 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1860 event pairs, 171 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 800. Up to 348 conditions per place. [2023-11-29 02:56:59,221 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 18 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-11-29 02:56:59,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 38 transitions, 153 flow [2023-11-29 02:56:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:56:59,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:56:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2023-11-29 02:56:59,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2023-11-29 02:56:59,224 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 122 transitions. [2023-11-29 02:56:59,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 122 transitions. [2023-11-29 02:56:59,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:59,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 122 transitions. [2023-11-29 02:56:59,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:59,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:59,228 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:59,228 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 107 flow. Second operand 6 states and 122 transitions. [2023-11-29 02:56:59,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 38 transitions, 153 flow [2023-11-29 02:56:59,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:56:59,231 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 114 flow [2023-11-29 02:56:59,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-11-29 02:56:59,232 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-11-29 02:56:59,232 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 114 flow [2023-11-29 02:56:59,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:59,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:59,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 02:56:59,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:56:59,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:56:59,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:56:59,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 565142489, now seen corresponding path program 1 times [2023-11-29 02:56:59,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:59,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131343123] [2023-11-29 02:56:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:59,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:59,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131343123] [2023-11-29 02:56:59,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131343123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:56:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692471394] [2023-11-29 02:56:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:59,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:56:59,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:56:59,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:56:59,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:56:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:59,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:56:59,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:56:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:59,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:56:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:59,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692471394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:56:59,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:56:59,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 02:56:59,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432284811] [2023-11-29 02:56:59,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:56:59,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:56:59,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:59,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:56:59,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:56:59,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-29 02:56:59,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 114 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:59,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:56:59,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-29 02:56:59,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:56:59,924 INFO L124 PetriNetUnfolderBase]: 230/429 cut-off events. [2023-11-29 02:56:59,924 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 02:56:59,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 429 events. 230/429 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1924 event pairs, 171 based on Foata normal form. 3/386 useless extension candidates. Maximal degree in co-relation 801. Up to 355 conditions per place. [2023-11-29 02:56:59,929 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 21 selfloop transitions, 13 changer transitions 0/47 dead transitions. [2023-11-29 02:56:59,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 236 flow [2023-11-29 02:56:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:56:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:56:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2023-11-29 02:56:59,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2023-11-29 02:56:59,932 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 197 transitions. [2023-11-29 02:56:59,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 197 transitions. [2023-11-29 02:56:59,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:56:59,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 197 transitions. [2023-11-29 02:56:59,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 19.7) internal successors, (197), 10 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:59,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 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) [2023-11-29 02:56:59,936 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 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) [2023-11-29 02:56:59,936 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 114 flow. Second operand 10 states and 197 transitions. [2023-11-29 02:56:59,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 236 flow [2023-11-29 02:56:59,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 190 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 02:56:59,939 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 166 flow [2023-11-29 02:56:59,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-29 02:56:59,940 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2023-11-29 02:56:59,940 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 166 flow [2023-11-29 02:56:59,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:56:59,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:56:59,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:59,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:57:00,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:00,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:57:00,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:00,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1249997623, now seen corresponding path program 1 times [2023-11-29 02:57:00,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382092904] [2023-11-29 02:57:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:00,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:00,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:00,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382092904] [2023-11-29 02:57:00,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382092904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:00,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:00,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:57:00,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147848139] [2023-11-29 02:57:00,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:00,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:57:00,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:00,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:00,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:57:00,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2023-11-29 02:57:00,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:00,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2023-11-29 02:57:00,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:00,417 INFO L124 PetriNetUnfolderBase]: 556/998 cut-off events. [2023-11-29 02:57:00,418 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-29 02:57:00,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 998 events. 556/998 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5114 event pairs, 223 based on Foata normal form. 26/955 useless extension candidates. Maximal degree in co-relation 1948. Up to 616 conditions per place. [2023-11-29 02:57:00,428 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 56 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-11-29 02:57:00,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 71 transitions, 342 flow [2023-11-29 02:57:00,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:57:00,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:57:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-29 02:57:00,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2023-11-29 02:57:00,430 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-29 02:57:00,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-29 02:57:00,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:00,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-29 02:57:00,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,432 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,432 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 166 flow. Second operand 4 states and 110 transitions. [2023-11-29 02:57:00,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 71 transitions, 342 flow [2023-11-29 02:57:00,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 331 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 02:57:00,436 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 184 flow [2023-11-29 02:57:00,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2023-11-29 02:57:00,437 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2023-11-29 02:57:00,437 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 184 flow [2023-11-29 02:57:00,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:00,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:00,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:57:00,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:57:00,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:00,439 INFO L85 PathProgramCache]: Analyzing trace with hash 464337150, now seen corresponding path program 1 times [2023-11-29 02:57:00,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:00,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790288604] [2023-11-29 02:57:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:00,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:00,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:00,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790288604] [2023-11-29 02:57:00,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790288604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:00,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:00,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:57:00,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171808815] [2023-11-29 02:57:00,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:00,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:57:00,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:00,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:00,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:57:00,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2023-11-29 02:57:00,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:00,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2023-11-29 02:57:00,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:00,763 INFO L124 PetriNetUnfolderBase]: 900/1503 cut-off events. [2023-11-29 02:57:00,763 INFO L125 PetriNetUnfolderBase]: For 465/640 co-relation queries the response was YES. [2023-11-29 02:57:00,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3436 conditions, 1503 events. 900/1503 cut-off events. For 465/640 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7861 event pairs, 405 based on Foata normal form. 99/1513 useless extension candidates. Maximal degree in co-relation 3400. Up to 952 conditions per place. [2023-11-29 02:57:00,777 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 62 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-11-29 02:57:00,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 404 flow [2023-11-29 02:57:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:57:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:57:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-29 02:57:00,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2023-11-29 02:57:00,778 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-29 02:57:00,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-29 02:57:00,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:00,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-29 02:57:00,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,781 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,781 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 184 flow. Second operand 4 states and 110 transitions. [2023-11-29 02:57:00,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 404 flow [2023-11-29 02:57:00,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:57:00,785 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 210 flow [2023-11-29 02:57:00,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-11-29 02:57:00,786 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-11-29 02:57:00,786 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 210 flow [2023-11-29 02:57:00,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:00,787 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:00,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:57:00,787 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:57:00,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:00,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1622304388, now seen corresponding path program 1 times [2023-11-29 02:57:00,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:00,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81979557] [2023-11-29 02:57:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:00,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:57:00,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:00,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81979557] [2023-11-29 02:57:00,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81979557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:00,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:00,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:57:00,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298895762] [2023-11-29 02:57:00,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:00,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:57:00,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:00,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:57:00,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:57:00,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2023-11-29 02:57:00,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:00,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:00,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2023-11-29 02:57:00,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:01,047 INFO L124 PetriNetUnfolderBase]: 563/996 cut-off events. [2023-11-29 02:57:01,047 INFO L125 PetriNetUnfolderBase]: For 466/616 co-relation queries the response was YES. [2023-11-29 02:57:01,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 996 events. 563/996 cut-off events. For 466/616 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5105 event pairs, 403 based on Foata normal form. 52/963 useless extension candidates. Maximal degree in co-relation 2450. Up to 825 conditions per place. [2023-11-29 02:57:01,056 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 34 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-29 02:57:01,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 279 flow [2023-11-29 02:57:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:57:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:57:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-29 02:57:01,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2023-11-29 02:57:01,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-29 02:57:01,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-29 02:57:01,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:01,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-29 02:57:01,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:01,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:01,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:01,059 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 210 flow. Second operand 3 states and 78 transitions. [2023-11-29 02:57:01,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 279 flow [2023-11-29 02:57:01,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 52 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:57:01,063 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 208 flow [2023-11-29 02:57:01,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-11-29 02:57:01,064 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-11-29 02:57:01,064 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 208 flow [2023-11-29 02:57:01,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:01,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:01,065 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 02:57:01,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:57:01,065 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:57:01,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:01,065 INFO L85 PathProgramCache]: Analyzing trace with hash -217579724, now seen corresponding path program 2 times [2023-11-29 02:57:01,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:01,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828948560] [2023-11-29 02:57:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:01,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:01,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:01,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828948560] [2023-11-29 02:57:01,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828948560] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:01,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995847011] [2023-11-29 02:57:01,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:57:01,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:01,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:01,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:01,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:57:01,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:57:01,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:57:01,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:57:01,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 02:57:01,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 02:57:01,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995847011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:01,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:57:01,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 02:57:01,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878432426] [2023-11-29 02:57:01,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:01,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 02:57:01,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:01,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 02:57:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:57:01,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-29 02:57:01,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 208 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:01,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:01,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-29 02:57:01,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:01,801 INFO L124 PetriNetUnfolderBase]: 564/999 cut-off events. [2023-11-29 02:57:01,802 INFO L125 PetriNetUnfolderBase]: For 414/564 co-relation queries the response was YES. [2023-11-29 02:57:01,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 999 events. 564/999 cut-off events. For 414/564 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5110 event pairs, 403 based on Foata normal form. 53/966 useless extension candidates. Maximal degree in co-relation 2386. Up to 817 conditions per place. [2023-11-29 02:57:01,813 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 21 selfloop transitions, 18 changer transitions 0/54 dead transitions. [2023-11-29 02:57:01,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 54 transitions, 292 flow [2023-11-29 02:57:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:57:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 02:57:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 261 transitions. [2023-11-29 02:57:01,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335548172757475 [2023-11-29 02:57:01,815 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 261 transitions. [2023-11-29 02:57:01,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 261 transitions. [2023-11-29 02:57:01,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:01,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 261 transitions. [2023-11-29 02:57:01,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 18.642857142857142) internal successors, (261), 14 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:01,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:01,820 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:01,820 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 208 flow. Second operand 14 states and 261 transitions. [2023-11-29 02:57:01,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 54 transitions, 292 flow [2023-11-29 02:57:01,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 54 transitions, 276 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-29 02:57:01,823 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 234 flow [2023-11-29 02:57:01,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=234, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-11-29 02:57:01,824 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-11-29 02:57:01,825 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 234 flow [2023-11-29 02:57:01,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:01,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:01,825 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:01,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:57:02,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 02:57:02,028 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:57:02,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1876576321, now seen corresponding path program 1 times [2023-11-29 02:57:02,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:02,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85814411] [2023-11-29 02:57:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:57:02,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:02,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85814411] [2023-11-29 02:57:02,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85814411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:02,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531010751] [2023-11-29 02:57:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:02,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:02,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,118 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:02,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:57:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:02,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:57:02,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:02,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:02,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:02,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531010751] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:02,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:57:02,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-29 02:57:02,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589452063] [2023-11-29 02:57:02,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:02,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 02:57:02,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:02,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 02:57:02,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:57:02,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-29 02:57:02,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 234 flow. Second operand has 19 states, 19 states have (on average 14.0) internal successors, (266), 19 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:02,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:02,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-29 02:57:02,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:03,593 INFO L124 PetriNetUnfolderBase]: 1564/2534 cut-off events. [2023-11-29 02:57:03,594 INFO L125 PetriNetUnfolderBase]: For 865/1127 co-relation queries the response was YES. [2023-11-29 02:57:03,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6336 conditions, 2534 events. 1564/2534 cut-off events. For 865/1127 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14202 event pairs, 262 based on Foata normal form. 168/2581 useless extension candidates. Maximal degree in co-relation 3797. Up to 392 conditions per place. [2023-11-29 02:57:03,618 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 118 selfloop transitions, 25 changer transitions 8/161 dead transitions. [2023-11-29 02:57:03,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 161 transitions, 874 flow [2023-11-29 02:57:03,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:57:03,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 02:57:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 294 transitions. [2023-11-29 02:57:03,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2023-11-29 02:57:03,621 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 294 transitions. [2023-11-29 02:57:03,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 294 transitions. [2023-11-29 02:57:03,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:03,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 294 transitions. [2023-11-29 02:57:03,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,625 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,625 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 234 flow. Second operand 14 states and 294 transitions. [2023-11-29 02:57:03,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 161 transitions, 874 flow [2023-11-29 02:57:03,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 161 transitions, 806 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-29 02:57:03,635 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 238 flow [2023-11-29 02:57:03,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=238, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-29 02:57:03,636 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2023-11-29 02:57:03,637 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 238 flow [2023-11-29 02:57:03,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.0) internal successors, (266), 19 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:03,637 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:03,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 02:57:03,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 02:57:03,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:57:03,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1549332557, now seen corresponding path program 1 times [2023-11-29 02:57:03,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999053019] [2023-11-29 02:57:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:57:03,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:03,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999053019] [2023-11-29 02:57:03,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999053019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:03,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371585984] [2023-11-29 02:57:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:03,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:03,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:03,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:57:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:04,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:57:04,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:04,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:04,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371585984] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:04,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:57:04,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-29 02:57:04,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748887198] [2023-11-29 02:57:04,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:04,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 02:57:04,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:04,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 02:57:04,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:57:04,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-29 02:57:04,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 238 flow. Second operand has 19 states, 19 states have (on average 14.210526315789474) internal successors, (270), 19 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:04,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:04,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-29 02:57:04,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:05,323 INFO L124 PetriNetUnfolderBase]: 1642/2734 cut-off events. [2023-11-29 02:57:05,324 INFO L125 PetriNetUnfolderBase]: For 2141/2203 co-relation queries the response was YES. [2023-11-29 02:57:05,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 2734 events. 1642/2734 cut-off events. For 2141/2203 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 15812 event pairs, 278 based on Foata normal form. 84/2717 useless extension candidates. Maximal degree in co-relation 4175. Up to 488 conditions per place. [2023-11-29 02:57:05,346 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 81 selfloop transitions, 19 changer transitions 53/162 dead transitions. [2023-11-29 02:57:05,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 162 transitions, 941 flow [2023-11-29 02:57:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:57:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 02:57:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 294 transitions. [2023-11-29 02:57:05,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2023-11-29 02:57:05,348 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 294 transitions. [2023-11-29 02:57:05,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 294 transitions. [2023-11-29 02:57:05,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:05,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 294 transitions. [2023-11-29 02:57:05,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:05,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:05,352 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:05,352 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 238 flow. Second operand 14 states and 294 transitions. [2023-11-29 02:57:05,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 162 transitions, 941 flow [2023-11-29 02:57:05,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 162 transitions, 848 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-11-29 02:57:05,360 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 210 flow [2023-11-29 02:57:05,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=210, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2023-11-29 02:57:05,361 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2023-11-29 02:57:05,361 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 210 flow [2023-11-29 02:57:05,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.210526315789474) internal successors, (270), 19 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:05,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:05,362 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:05,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:57:05,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 02:57:05,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:57:05,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash 724794789, now seen corresponding path program 1 times [2023-11-29 02:57:05,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:05,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357198282] [2023-11-29 02:57:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:05,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:57:05,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:05,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357198282] [2023-11-29 02:57:05,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357198282] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:05,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089593727] [2023-11-29 02:57:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:05,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:05,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:05,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:05,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:57:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:05,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:57:05,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:57:05,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:57:05,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089593727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:05,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:57:05,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 02:57:05,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089150934] [2023-11-29 02:57:05,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:05,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:57:05,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:05,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:57:05,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:57:05,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2023-11-29 02:57:05,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 210 flow. Second operand has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 12 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:05,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:05,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2023-11-29 02:57:05,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:06,448 INFO L124 PetriNetUnfolderBase]: 1855/3259 cut-off events. [2023-11-29 02:57:06,448 INFO L125 PetriNetUnfolderBase]: For 2939/3033 co-relation queries the response was YES. [2023-11-29 02:57:06,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8762 conditions, 3259 events. 1855/3259 cut-off events. For 2939/3033 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19185 event pairs, 593 based on Foata normal form. 132/3306 useless extension candidates. Maximal degree in co-relation 5819. Up to 1201 conditions per place. [2023-11-29 02:57:06,497 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 137 selfloop transitions, 13 changer transitions 0/160 dead transitions. [2023-11-29 02:57:06,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 160 transitions, 944 flow [2023-11-29 02:57:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:57:06,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:57:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 272 transitions. [2023-11-29 02:57:06,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6325581395348837 [2023-11-29 02:57:06,499 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 272 transitions. [2023-11-29 02:57:06,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 272 transitions. [2023-11-29 02:57:06,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:06,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 272 transitions. [2023-11-29 02:57:06,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.2) internal successors, (272), 10 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:06,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 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) [2023-11-29 02:57:06,503 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 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) [2023-11-29 02:57:06,503 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 210 flow. Second operand 10 states and 272 transitions. [2023-11-29 02:57:06,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 160 transitions, 944 flow [2023-11-29 02:57:06,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 815 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-11-29 02:57:06,512 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 239 flow [2023-11-29 02:57:06,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=239, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-11-29 02:57:06,513 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2023-11-29 02:57:06,513 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 239 flow [2023-11-29 02:57:06,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 12 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:06,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:06,514 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:06,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:57:06,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:06,716 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:57:06,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1748836730, now seen corresponding path program 1 times [2023-11-29 02:57:06,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:06,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543181356] [2023-11-29 02:57:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:06,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:57:06,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543181356] [2023-11-29 02:57:06,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543181356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074551406] [2023-11-29 02:57:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:06,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:06,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:06,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:06,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:57:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:06,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:57:06,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:57:06,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:57:07,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074551406] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:07,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:57:07,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 02:57:07,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506304563] [2023-11-29 02:57:07,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:07,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:57:07,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:07,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:57:07,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:57:07,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2023-11-29 02:57:07,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 239 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:07,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:07,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2023-11-29 02:57:07,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:07,942 INFO L124 PetriNetUnfolderBase]: 3829/6430 cut-off events. [2023-11-29 02:57:07,942 INFO L125 PetriNetUnfolderBase]: For 6862/7086 co-relation queries the response was YES. [2023-11-29 02:57:07,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17045 conditions, 6430 events. 3829/6430 cut-off events. For 6862/7086 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 40260 event pairs, 1073 based on Foata normal form. 258/6567 useless extension candidates. Maximal degree in co-relation 13749. Up to 2239 conditions per place. [2023-11-29 02:57:07,982 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 191 selfloop transitions, 13 changer transitions 0/217 dead transitions. [2023-11-29 02:57:07,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 217 transitions, 1414 flow [2023-11-29 02:57:07,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:57:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:57:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 272 transitions. [2023-11-29 02:57:07,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6325581395348837 [2023-11-29 02:57:07,985 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 272 transitions. [2023-11-29 02:57:07,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 272 transitions. [2023-11-29 02:57:07,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:07,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 272 transitions. [2023-11-29 02:57:07,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.2) internal successors, (272), 10 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:07,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 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) [2023-11-29 02:57:07,989 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 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) [2023-11-29 02:57:07,989 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 239 flow. Second operand 10 states and 272 transitions. [2023-11-29 02:57:07,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 217 transitions, 1414 flow [2023-11-29 02:57:07,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 217 transitions, 1331 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-11-29 02:57:08,003 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 311 flow [2023-11-29 02:57:08,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=311, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-11-29 02:57:08,004 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2023-11-29 02:57:08,004 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 311 flow [2023-11-29 02:57:08,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:08,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:08,005 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 02:57:08,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:57:08,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:08,205 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:57:08,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1192290688, now seen corresponding path program 2 times [2023-11-29 02:57:08,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:08,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870827104] [2023-11-29 02:57:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:08,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 02:57:08,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:08,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870827104] [2023-11-29 02:57:08,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870827104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:08,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805429698] [2023-11-29 02:57:08,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:57:08,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:08,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:08,417 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:08,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:57:08,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:57:08,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:57:08,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:57:08,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 02:57:08,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 02:57:08,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805429698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:08,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:57:08,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-11-29 02:57:08,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647328568] [2023-11-29 02:57:08,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:08,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:57:08,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:08,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:57:08,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:57:08,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-29 02:57:08,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 311 flow. Second operand has 13 states, 13 states have (on average 14.307692307692308) internal successors, (186), 13 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:08,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:08,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-29 02:57:08,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:10,268 INFO L124 PetriNetUnfolderBase]: 8755/13898 cut-off events. [2023-11-29 02:57:10,268 INFO L125 PetriNetUnfolderBase]: For 19457/20152 co-relation queries the response was YES. [2023-11-29 02:57:10,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40317 conditions, 13898 events. 8755/13898 cut-off events. For 19457/20152 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 92439 event pairs, 1142 based on Foata normal form. 160/13885 useless extension candidates. Maximal degree in co-relation 31979. Up to 2816 conditions per place. [2023-11-29 02:57:10,327 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 142 selfloop transitions, 38 changer transitions 45/237 dead transitions. [2023-11-29 02:57:10,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 237 transitions, 1595 flow [2023-11-29 02:57:10,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:57:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 02:57:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 322 transitions. [2023-11-29 02:57:10,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2023-11-29 02:57:10,330 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 322 transitions. [2023-11-29 02:57:10,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 322 transitions. [2023-11-29 02:57:10,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:10,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 322 transitions. [2023-11-29 02:57:10,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 20.125) internal successors, (322), 16 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:10,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:10,333 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:10,333 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 311 flow. Second operand 16 states and 322 transitions. [2023-11-29 02:57:10,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 237 transitions, 1595 flow [2023-11-29 02:57:10,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 237 transitions, 1492 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-11-29 02:57:10,385 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 449 flow [2023-11-29 02:57:10,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=449, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2023-11-29 02:57:10,386 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2023-11-29 02:57:10,386 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 449 flow [2023-11-29 02:57:10,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.307692307692308) internal successors, (186), 13 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:10,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:57:10,387 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:10,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 02:57:10,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:10,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:57:10,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:10,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1800533452, now seen corresponding path program 2 times [2023-11-29 02:57:10,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:10,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443697255] [2023-11-29 02:57:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:10,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 02:57:10,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:10,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443697255] [2023-11-29 02:57:10,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443697255] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:10,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870969328] [2023-11-29 02:57:10,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:57:10,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:10,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:10,831 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:10,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:57:10,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:57:10,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:57:10,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:57:10,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 02:57:11,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 02:57:11,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870969328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:11,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:57:11,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-11-29 02:57:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427010499] [2023-11-29 02:57:11,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:11,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:57:11,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:11,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:57:11,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:57:11,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-29 02:57:11,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 449 flow. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:11,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:57:11,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-29 02:57:11,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:57:12,531 INFO L124 PetriNetUnfolderBase]: 7881/12527 cut-off events. [2023-11-29 02:57:12,531 INFO L125 PetriNetUnfolderBase]: For 26901/27656 co-relation queries the response was YES. [2023-11-29 02:57:12,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37412 conditions, 12527 events. 7881/12527 cut-off events. For 26901/27656 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 84024 event pairs, 658 based on Foata normal form. 550/12982 useless extension candidates. Maximal degree in co-relation 27463. Up to 2992 conditions per place. [2023-11-29 02:57:12,558 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 0 selfloop transitions, 0 changer transitions 233/233 dead transitions. [2023-11-29 02:57:12,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 233 transitions, 1708 flow [2023-11-29 02:57:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:57:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 02:57:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 317 transitions. [2023-11-29 02:57:12,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46075581395348836 [2023-11-29 02:57:12,560 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 317 transitions. [2023-11-29 02:57:12,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 317 transitions. [2023-11-29 02:57:12,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:12,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 317 transitions. [2023-11-29 02:57:12,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 19.8125) internal successors, (317), 16 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:12,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:12,564 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:12,564 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 449 flow. Second operand 16 states and 317 transitions. [2023-11-29 02:57:12,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 233 transitions, 1708 flow [2023-11-29 02:57:12,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 233 transitions, 1676 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-11-29 02:57:12,626 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2023-11-29 02:57:12,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2023-11-29 02:57:12,627 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2023-11-29 02:57:12,627 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2023-11-29 02:57:12,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:12,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-11-29 02:57:12,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-29 02:57:12,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-29 02:57:12,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-29 02:57:12,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-29 02:57:12,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-29 02:57:12,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-11-29 02:57:12,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-11-29 02:57:12,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-11-29 02:57:12,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-29 02:57:12,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-29 02:57:12,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-29 02:57:12,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-29 02:57:12,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 02:57:12,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:57:12,832 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:12,836 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 02:57:12,836 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 02:57:12,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:57:12 BasicIcfg [2023-11-29 02:57:12,840 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 02:57:12,841 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:57:12,841 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:57:12,841 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:57:12,841 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:56:57" (3/4) ... [2023-11-29 02:57:12,842 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 02:57:12,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 02:57:12,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 02:57:12,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-29 02:57:12,850 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 99 nodes and edges [2023-11-29 02:57:12,851 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-11-29 02:57:12,851 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 02:57:12,851 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 02:57:12,931 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 02:57:12,932 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 02:57:12,932 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:57:12,932 INFO L158 Benchmark]: Toolchain (without parser) took 16070.75ms. Allocated memory was 138.4MB in the beginning and 501.2MB in the end (delta: 362.8MB). Free memory was 93.3MB in the beginning and 182.8MB in the end (delta: -89.5MB). Peak memory consumption was 275.7MB. Max. memory is 16.1GB. [2023-11-29 02:57:12,933 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 138.4MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:57:12,933 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.91ms. Allocated memory is still 138.4MB. Free memory was 93.3MB in the beginning and 81.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 02:57:12,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.46ms. Allocated memory is still 138.4MB. Free memory was 81.6MB in the beginning and 79.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:57:12,934 INFO L158 Benchmark]: Boogie Preprocessor took 51.75ms. Allocated memory is still 138.4MB. Free memory was 79.6MB in the beginning and 77.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:57:12,935 INFO L158 Benchmark]: RCFGBuilder took 743.92ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 76.8MB in the beginning and 117.8MB in the end (delta: -40.9MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2023-11-29 02:57:12,935 INFO L158 Benchmark]: TraceAbstraction took 14875.03ms. Allocated memory was 182.5MB in the beginning and 501.2MB in the end (delta: 318.8MB). Free memory was 117.8MB in the beginning and 188.4MB in the end (delta: -70.6MB). Peak memory consumption was 375.2MB. Max. memory is 16.1GB. [2023-11-29 02:57:12,935 INFO L158 Benchmark]: Witness Printer took 91.11ms. Allocated memory is still 501.2MB. Free memory was 188.0MB in the beginning and 182.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 02:57:12,938 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 138.4MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.91ms. Allocated memory is still 138.4MB. Free memory was 93.3MB in the beginning and 81.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.46ms. Allocated memory is still 138.4MB. Free memory was 81.6MB in the beginning and 79.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.75ms. Allocated memory is still 138.4MB. Free memory was 79.6MB in the beginning and 77.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 743.92ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 76.8MB in the beginning and 117.8MB in the end (delta: -40.9MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * TraceAbstraction took 14875.03ms. Allocated memory was 182.5MB in the beginning and 501.2MB in the end (delta: 318.8MB). Free memory was 117.8MB in the beginning and 188.4MB in the end (delta: -70.6MB). Peak memory consumption was 375.2MB. Max. memory is 16.1GB. * Witness Printer took 91.11ms. Allocated memory is still 501.2MB. Free memory was 188.0MB in the beginning and 182.8MB 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: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: 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, 66 locations, 13 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: 14.8s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1196 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1129 mSDsluCounter, 858 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 851 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4700 IncrementalHoareTripleChecker+Invalid, 4747 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 7 mSDtfsCounter, 4700 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 457 GetRequests, 277 SyntacticMatches, 7 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449occurred in iteration=12, InterpolantAutomatonStates: 125, 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: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 388 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 529 ConstructedInterpolants, 0 QuantifiedInterpolants, 1581 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1183 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 322/527 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 02:57:12,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b08d9b8-10c9-4148-ae15-ce22bdde2424/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE