./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme --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 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:45:16,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:45:16,822 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:45:16,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:45:16,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:45:16,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:45:16,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:45:16,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:45:16,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:45:16,866 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:45:16,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:45:16,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:45:16,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:45:16,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:45:16,870 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:45:16,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:45:16,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:45:16,873 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:45:16,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:45:16,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:45:16,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:45:16,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:45:16,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:45:16,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:45:16,878 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:45:16,879 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:45:16,880 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:45:16,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:45:16,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:45:16,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:45:16,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:45:16,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:45:16,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:45:16,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:16,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:45:16,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:45:16,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:45:16,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:45:16,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:45:16,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:45:16,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:45:16,889 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:45:16,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:45:16,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:45:16,891 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_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 [2023-11-26 10:45:17,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:45:17,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:45:17,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:45:17,294 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:45:17,295 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:45:17,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2023-11-26 10:45:20,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:45:21,111 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:45:21,111 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2023-11-26 10:45:21,127 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/data/e96d9e32c/32e2b4aa04c545e187c1c3dcd2f7904a/FLAGc3d0a76b7 [2023-11-26 10:45:21,144 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/data/e96d9e32c/32e2b4aa04c545e187c1c3dcd2f7904a [2023-11-26 10:45:21,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:45:21,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:45:21,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:21,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:45:21,159 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:45:21,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3845d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21, skipping insertion in model container [2023-11-26 10:45:21,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:45:21,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:21,478 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:45:21,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:21,554 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:45:21,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21 WrapperNode [2023-11-26 10:45:21,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:21,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:21,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:45:21,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:45:21,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,658 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 22, calls inlined = 30, statements flattened = 501 [2023-11-26 10:45:21,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:21,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:45:21,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:45:21,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:45:21,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,726 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 2, 2, 18]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 2]. [2023-11-26 10:45:21,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,727 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:45:21,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:45:21,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:45:21,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:45:21,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (1/1) ... [2023-11-26 10:45:21,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:21,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:21,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:45:21,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:45:21,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:45:21,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:45:21,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:45:21,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:45:21,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:45:21,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:45:21,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:45:21,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:45:21,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:45:21,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:45:21,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 10:45:21,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 10:45:21,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 10:45:21,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 10:45:21,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:45:21,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:45:21,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:45:21,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:45:21,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:45:21,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:45:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:45:21,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:45:21,944 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:45:22,181 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:45:22,185 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:45:23,476 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:45:24,282 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:45:24,284 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 10:45:24,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:24 BoogieIcfgContainer [2023-11-26 10:45:24,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:45:24,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:45:24,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:45:24,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:45:24,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:45:21" (1/3) ... [2023-11-26 10:45:24,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3546e599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:24, skipping insertion in model container [2023-11-26 10:45:24,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:21" (2/3) ... [2023-11-26 10:45:24,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3546e599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:24, skipping insertion in model container [2023-11-26 10:45:24,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:24" (3/3) ... [2023-11-26 10:45:24,298 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-11-26 10:45:24,311 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:45:24,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:45:24,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-26 10:45:24,325 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:45:24,558 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 10:45:24,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 171 transitions, 356 flow [2023-11-26 10:45:24,695 INFO L124 PetriNetUnfolderBase]: 26/169 cut-off events. [2023-11-26 10:45:24,695 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 10:45:24,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 169 events. 26/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 837 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2023-11-26 10:45:24,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 171 transitions, 356 flow [2023-11-26 10:45:24,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 168 transitions, 348 flow [2023-11-26 10:45:24,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:24,730 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;@35fe2077, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:24,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-11-26 10:45:24,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:45:24,735 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 10:45:24,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:45:24,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:24,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:45:24,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:24,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:24,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1507955, now seen corresponding path program 1 times [2023-11-26 10:45:24,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:24,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326851667] [2023-11-26 10:45:24,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:24,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:25,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:25,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326851667] [2023-11-26 10:45:25,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326851667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:25,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:25,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:25,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232306604] [2023-11-26 10:45:25,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:25,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:25,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:25,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:25,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:25,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-26 10:45:25,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 168 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:25,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:25,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-26 10:45:25,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:26,711 INFO L124 PetriNetUnfolderBase]: 2727/6183 cut-off events. [2023-11-26 10:45:26,711 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-26 10:45:26,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10205 conditions, 6183 events. 2727/6183 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 55993 event pairs, 1685 based on Foata normal form. 100/4993 useless extension candidates. Maximal degree in co-relation 9884. Up to 3943 conditions per place. [2023-11-26 10:45:26,785 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 78 selfloop transitions, 7 changer transitions 3/170 dead transitions. [2023-11-26 10:45:26,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 170 transitions, 524 flow [2023-11-26 10:45:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:45:26,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 438 transitions. [2023-11-26 10:45:26,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2023-11-26 10:45:26,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 438 transitions. [2023-11-26 10:45:26,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 438 transitions. [2023-11-26 10:45:26,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:26,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 438 transitions. [2023-11-26 10:45:26,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:26,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:26,826 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:26,828 INFO L175 Difference]: Start difference. First operand has 149 places, 168 transitions, 348 flow. Second operand 4 states and 438 transitions. [2023-11-26 10:45:26,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 170 transitions, 524 flow [2023-11-26 10:45:26,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 170 transitions, 516 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:45:26,843 INFO L231 Difference]: Finished difference. Result has 149 places, 167 transitions, 385 flow [2023-11-26 10:45:26,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=149, PETRI_TRANSITIONS=167} [2023-11-26 10:45:26,850 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-26 10:45:26,850 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 167 transitions, 385 flow [2023-11-26 10:45:26,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:26,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:26,851 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:45:26,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:45:26,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:26,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1975311829, now seen corresponding path program 1 times [2023-11-26 10:45:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:26,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364967757] [2023-11-26 10:45:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:27,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:27,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364967757] [2023-11-26 10:45:27,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364967757] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:27,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950204441] [2023-11-26 10:45:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:27,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:27,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:27,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:27,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:45:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:27,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:45:27,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:27,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:27,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950204441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:27,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:27,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 10:45:27,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048184474] [2023-11-26 10:45:27,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:27,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:45:27,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:45:27,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:45:27,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-26 10:45:27,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 167 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:27,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:27,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-26 10:45:27,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:28,765 INFO L124 PetriNetUnfolderBase]: 2727/6178 cut-off events. [2023-11-26 10:45:28,766 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-26 10:45:28,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10172 conditions, 6178 events. 2727/6178 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 55929 event pairs, 1685 based on Foata normal form. 2/4893 useless extension candidates. Maximal degree in co-relation 10122. Up to 3932 conditions per place. [2023-11-26 10:45:28,831 INFO L140 encePairwiseOnDemand]: 162/171 looper letters, 71 selfloop transitions, 12 changer transitions 0/165 dead transitions. [2023-11-26 10:45:28,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 165 transitions, 543 flow [2023-11-26 10:45:28,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:45:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:45:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 601 transitions. [2023-11-26 10:45:28,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857699805068226 [2023-11-26 10:45:28,837 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 601 transitions. [2023-11-26 10:45:28,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 601 transitions. [2023-11-26 10:45:28,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:28,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 601 transitions. [2023-11-26 10:45:28,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:28,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:28,902 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:28,902 INFO L175 Difference]: Start difference. First operand has 149 places, 167 transitions, 385 flow. Second operand 6 states and 601 transitions. [2023-11-26 10:45:28,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 165 transitions, 543 flow [2023-11-26 10:45:28,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 165 transitions, 543 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:45:28,916 INFO L231 Difference]: Finished difference. Result has 149 places, 165 transitions, 401 flow [2023-11-26 10:45:28,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=401, PETRI_PLACES=149, PETRI_TRANSITIONS=165} [2023-11-26 10:45:28,918 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-26 10:45:28,919 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 165 transitions, 401 flow [2023-11-26 10:45:28,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:28,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:28,920 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:45:28,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:29,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:29,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:29,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1105126060, now seen corresponding path program 1 times [2023-11-26 10:45:29,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:29,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355052653] [2023-11-26 10:45:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:29,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:29,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355052653] [2023-11-26 10:45:29,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355052653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598266192] [2023-11-26 10:45:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:29,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:29,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:29,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:29,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:45:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:29,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:45:29,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:29,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:29,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598266192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:45:29,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:45:29,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 10:45:29,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553148553] [2023-11-26 10:45:29,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:29,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:45:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:29,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:45:29,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:45:29,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-26 10:45:29,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 165 transitions, 401 flow. Second operand has 12 states, 12 states have (on average 87.08333333333333) internal successors, (1045), 12 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:29,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:29,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-26 10:45:29,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:30,929 INFO L124 PetriNetUnfolderBase]: 2733/6202 cut-off events. [2023-11-26 10:45:30,930 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-26 10:45:30,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10266 conditions, 6202 events. 2733/6202 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 56290 event pairs, 1685 based on Foata normal form. 6/4920 useless extension candidates. Maximal degree in co-relation 10124. Up to 3943 conditions per place. [2023-11-26 10:45:30,992 INFO L140 encePairwiseOnDemand]: 162/171 looper letters, 76 selfloop transitions, 25 changer transitions 0/183 dead transitions. [2023-11-26 10:45:30,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 183 transitions, 717 flow [2023-11-26 10:45:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:45:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:45:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 967 transitions. [2023-11-26 10:45:30,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654970760233918 [2023-11-26 10:45:30,998 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 967 transitions. [2023-11-26 10:45:30,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 967 transitions. [2023-11-26 10:45:30,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:31,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 967 transitions. [2023-11-26 10:45:31,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.7) internal successors, (967), 10 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:31,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:31,012 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:31,013 INFO L175 Difference]: Start difference. First operand has 149 places, 165 transitions, 401 flow. Second operand 10 states and 967 transitions. [2023-11-26 10:45:31,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 183 transitions, 717 flow [2023-11-26 10:45:31,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 183 transitions, 659 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-26 10:45:31,030 INFO L231 Difference]: Finished difference. Result has 156 places, 183 transitions, 541 flow [2023-11-26 10:45:31,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=541, PETRI_PLACES=156, PETRI_TRANSITIONS=183} [2023-11-26 10:45:31,032 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 7 predicate places. [2023-11-26 10:45:31,033 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 183 transitions, 541 flow [2023-11-26 10:45:31,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.08333333333333) internal successors, (1045), 12 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:31,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:31,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:31,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:31,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:31,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1564540902, now seen corresponding path program 1 times [2023-11-26 10:45:31,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:31,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213682407] [2023-11-26 10:45:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:31,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:31,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213682407] [2023-11-26 10:45:31,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213682407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:31,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:31,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:31,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586684087] [2023-11-26 10:45:31,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:31,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:31,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:31,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:31,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:31,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 171 [2023-11-26 10:45:31,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 183 transitions, 541 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:31,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:31,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 171 [2023-11-26 10:45:31,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:32,393 INFO L124 PetriNetUnfolderBase]: 2731/6200 cut-off events. [2023-11-26 10:45:32,394 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-11-26 10:45:32,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 6200 events. 2731/6200 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 56057 event pairs, 1685 based on Foata normal form. 2/4916 useless extension candidates. Maximal degree in co-relation 10204. Up to 3952 conditions per place. [2023-11-26 10:45:32,440 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 90 selfloop transitions, 7 changer transitions 0/181 dead transitions. [2023-11-26 10:45:32,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 181 transitions, 725 flow [2023-11-26 10:45:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:32,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:45:32,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-11-26 10:45:32,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2023-11-26 10:45:32,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-11-26 10:45:32,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-11-26 10:45:32,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:32,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-11-26 10:45:32,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:32,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:32,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:32,454 INFO L175 Difference]: Start difference. First operand has 156 places, 183 transitions, 541 flow. Second operand 3 states and 351 transitions. [2023-11-26 10:45:32,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 181 transitions, 725 flow [2023-11-26 10:45:32,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 181 transitions, 695 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-26 10:45:32,472 INFO L231 Difference]: Finished difference. Result has 155 places, 181 transitions, 515 flow [2023-11-26 10:45:32,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=515, PETRI_PLACES=155, PETRI_TRANSITIONS=181} [2023-11-26 10:45:32,474 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 6 predicate places. [2023-11-26 10:45:32,475 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 181 transitions, 515 flow [2023-11-26 10:45:32,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:32,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:32,476 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-26 10:45:32,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:45:32,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:32,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1129203634, now seen corresponding path program 2 times [2023-11-26 10:45:32,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:32,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433945898] [2023-11-26 10:45:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:32,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433945898] [2023-11-26 10:45:32,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433945898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:32,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217566674] [2023-11-26 10:45:32,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:45:32,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:32,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:32,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:32,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:45:32,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:45:32,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:45:32,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:45:32,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:45:32,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:45:33,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217566674] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:45:33,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:45:33,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2023-11-26 10:45:33,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630255822] [2023-11-26 10:45:33,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:33,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 10:45:33,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:33,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 10:45:33,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:45:33,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-26 10:45:33,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 181 transitions, 515 flow. Second operand has 15 states, 15 states have (on average 87.33333333333333) internal successors, (1310), 15 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:33,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:33,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-26 10:45:33,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:34,449 INFO L124 PetriNetUnfolderBase]: 2733/6202 cut-off events. [2023-11-26 10:45:34,450 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-26 10:45:34,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10266 conditions, 6202 events. 2733/6202 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 55950 event pairs, 1685 based on Foata normal form. 2/4918 useless extension candidates. Maximal degree in co-relation 10196. Up to 3935 conditions per place. [2023-11-26 10:45:34,503 INFO L140 encePairwiseOnDemand]: 162/171 looper letters, 68 selfloop transitions, 33 changer transitions 0/183 dead transitions. [2023-11-26 10:45:34,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 183 transitions, 721 flow [2023-11-26 10:45:34,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:45:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 10:45:34,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1221 transitions. [2023-11-26 10:45:34,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492577597840755 [2023-11-26 10:45:34,510 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1221 transitions. [2023-11-26 10:45:34,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1221 transitions. [2023-11-26 10:45:34,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:34,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1221 transitions. [2023-11-26 10:45:34,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 93.92307692307692) internal successors, (1221), 13 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:34,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:34,523 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:34,523 INFO L175 Difference]: Start difference. First operand has 155 places, 181 transitions, 515 flow. Second operand 13 states and 1221 transitions. [2023-11-26 10:45:34,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 183 transitions, 721 flow [2023-11-26 10:45:34,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 183 transitions, 685 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-26 10:45:34,530 INFO L231 Difference]: Finished difference. Result has 159 places, 183 transitions, 549 flow [2023-11-26 10:45:34,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=549, PETRI_PLACES=159, PETRI_TRANSITIONS=183} [2023-11-26 10:45:34,534 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 10 predicate places. [2023-11-26 10:45:34,534 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 183 transitions, 549 flow [2023-11-26 10:45:34,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 87.33333333333333) internal successors, (1310), 15 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:34,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:34,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:34,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 10:45:34,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:34,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:34,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:34,743 INFO L85 PathProgramCache]: Analyzing trace with hash -337690398, now seen corresponding path program 1 times [2023-11-26 10:45:34,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:34,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884098091] [2023-11-26 10:45:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:34,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:45:34,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:34,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884098091] [2023-11-26 10:45:34,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884098091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:34,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:34,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990804061] [2023-11-26 10:45:34,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:34,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:34,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:34,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 171 [2023-11-26 10:45:34,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 183 transitions, 549 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:34,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:34,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 171 [2023-11-26 10:45:34,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:35,848 INFO L124 PetriNetUnfolderBase]: 3199/6902 cut-off events. [2023-11-26 10:45:35,849 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-26 10:45:35,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11727 conditions, 6902 events. 3199/6902 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 60792 event pairs, 1535 based on Foata normal form. 108/5507 useless extension candidates. Maximal degree in co-relation 11561. Up to 3510 conditions per place. [2023-11-26 10:45:35,893 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 136 selfloop transitions, 5 changer transitions 0/215 dead transitions. [2023-11-26 10:45:35,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 215 transitions, 896 flow [2023-11-26 10:45:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:35,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:45:35,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2023-11-26 10:45:35,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6505847953216374 [2023-11-26 10:45:35,896 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2023-11-26 10:45:35,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2023-11-26 10:45:35,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:35,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2023-11-26 10:45:35,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:35,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:35,902 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:35,902 INFO L175 Difference]: Start difference. First operand has 159 places, 183 transitions, 549 flow. Second operand 4 states and 445 transitions. [2023-11-26 10:45:35,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 215 transitions, 896 flow [2023-11-26 10:45:35,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 215 transitions, 776 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-11-26 10:45:35,909 INFO L231 Difference]: Finished difference. Result has 148 places, 181 transitions, 435 flow [2023-11-26 10:45:35,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=148, PETRI_TRANSITIONS=181} [2023-11-26 10:45:35,911 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -1 predicate places. [2023-11-26 10:45:35,911 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 181 transitions, 435 flow [2023-11-26 10:45:35,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:35,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:35,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:35,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:45:35,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:35,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:35,913 INFO L85 PathProgramCache]: Analyzing trace with hash -336704348, now seen corresponding path program 1 times [2023-11-26 10:45:35,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:35,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109356129] [2023-11-26 10:45:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:35,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:45:35,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:35,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109356129] [2023-11-26 10:45:35,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109356129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:35,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:35,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:35,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155875851] [2023-11-26 10:45:35,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:35,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:35,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:35,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:35,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:35,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-26 10:45:36,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 181 transitions, 435 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 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) [2023-11-26 10:45:36,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:36,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-26 10:45:36,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:37,213 INFO L124 PetriNetUnfolderBase]: 4833/10380 cut-off events. [2023-11-26 10:45:37,213 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-26 10:45:37,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17819 conditions, 10380 events. 4833/10380 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 93256 event pairs, 2077 based on Foata normal form. 108/8662 useless extension candidates. Maximal degree in co-relation 15315. Up to 4523 conditions per place. [2023-11-26 10:45:37,282 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 158 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-11-26 10:45:37,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 236 transitions, 867 flow [2023-11-26 10:45:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:45:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-11-26 10:45:37,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2023-11-26 10:45:37,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-11-26 10:45:37,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-11-26 10:45:37,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:37,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-11-26 10:45:37,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:37,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:37,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:37,292 INFO L175 Difference]: Start difference. First operand has 148 places, 181 transitions, 435 flow. Second operand 3 states and 396 transitions. [2023-11-26 10:45:37,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 236 transitions, 867 flow [2023-11-26 10:45:37,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 236 transitions, 857 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:45:37,337 INFO L231 Difference]: Finished difference. Result has 148 places, 182 transitions, 443 flow [2023-11-26 10:45:37,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=443, PETRI_PLACES=148, PETRI_TRANSITIONS=182} [2023-11-26 10:45:37,338 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -1 predicate places. [2023-11-26 10:45:37,338 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 182 transitions, 443 flow [2023-11-26 10:45:37,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 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) [2023-11-26 10:45:37,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:37,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:37,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:45:37,340 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:37,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1878466070, now seen corresponding path program 1 times [2023-11-26 10:45:37,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:37,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087002879] [2023-11-26 10:45:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:37,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:45:37,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:37,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087002879] [2023-11-26 10:45:37,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087002879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:37,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:37,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:37,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850321606] [2023-11-26 10:45:37,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:37,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:37,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:37,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:37,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:37,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-26 10:45:37,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 182 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:37,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:37,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-26 10:45:37,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:38,781 INFO L124 PetriNetUnfolderBase]: 5180/11517 cut-off events. [2023-11-26 10:45:38,781 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2023-11-26 10:45:38,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19585 conditions, 11517 events. 5180/11517 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 106942 event pairs, 2572 based on Foata normal form. 0/9447 useless extension candidates. Maximal degree in co-relation 7438. Up to 5861 conditions per place. [2023-11-26 10:45:38,845 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 134 selfloop transitions, 7 changer transitions 0/217 dead transitions. [2023-11-26 10:45:38,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 217 transitions, 796 flow [2023-11-26 10:45:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:38,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:45:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2023-11-26 10:45:38,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6593567251461988 [2023-11-26 10:45:38,848 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2023-11-26 10:45:38,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2023-11-26 10:45:38,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:38,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2023-11-26 10:45:38,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:38,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:38,852 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:38,853 INFO L175 Difference]: Start difference. First operand has 148 places, 182 transitions, 443 flow. Second operand 4 states and 451 transitions. [2023-11-26 10:45:38,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 217 transitions, 796 flow [2023-11-26 10:45:38,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 217 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:45:38,859 INFO L231 Difference]: Finished difference. Result has 150 places, 182 transitions, 463 flow [2023-11-26 10:45:38,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=150, PETRI_TRANSITIONS=182} [2023-11-26 10:45:38,860 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 1 predicate places. [2023-11-26 10:45:38,861 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 182 transitions, 463 flow [2023-11-26 10:45:38,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:38,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:38,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:38,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:45:38,862 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:38,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1451355986, now seen corresponding path program 1 times [2023-11-26 10:45:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:38,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946312627] [2023-11-26 10:45:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:45:38,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946312627] [2023-11-26 10:45:38,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946312627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:38,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:38,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:38,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864561876] [2023-11-26 10:45:38,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:38,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:38,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:38,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 171 [2023-11-26 10:45:38,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 182 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:38,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:38,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 171 [2023-11-26 10:45:38,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:40,136 INFO L124 PetriNetUnfolderBase]: 5199/11340 cut-off events. [2023-11-26 10:45:40,137 INFO L125 PetriNetUnfolderBase]: For 1551/1551 co-relation queries the response was YES. [2023-11-26 10:45:40,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19934 conditions, 11340 events. 5199/11340 cut-off events. For 1551/1551 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 104394 event pairs, 2303 based on Foata normal form. 216/9578 useless extension candidates. Maximal degree in co-relation 15437. Up to 5262 conditions per place. [2023-11-26 10:45:40,206 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 135 selfloop transitions, 5 changer transitions 0/214 dead transitions. [2023-11-26 10:45:40,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 214 transitions, 802 flow [2023-11-26 10:45:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:40,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:45:40,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-11-26 10:45:40,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461988304093568 [2023-11-26 10:45:40,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-11-26 10:45:40,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-11-26 10:45:40,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:40,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-11-26 10:45:40,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:40,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:40,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:40,214 INFO L175 Difference]: Start difference. First operand has 150 places, 182 transitions, 463 flow. Second operand 4 states and 442 transitions. [2023-11-26 10:45:40,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 214 transitions, 802 flow [2023-11-26 10:45:40,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 214 transitions, 796 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:45:40,233 INFO L231 Difference]: Finished difference. Result has 149 places, 180 transitions, 457 flow [2023-11-26 10:45:40,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=457, PETRI_PLACES=149, PETRI_TRANSITIONS=180} [2023-11-26 10:45:40,235 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-26 10:45:40,235 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 180 transitions, 457 flow [2023-11-26 10:45:40,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:40,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:40,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:40,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:45:40,236 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:40,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1780441404, now seen corresponding path program 1 times [2023-11-26 10:45:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:40,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373523944] [2023-11-26 10:45:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:40,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:45:40,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:40,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373523944] [2023-11-26 10:45:40,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373523944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:40,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:40,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:40,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641054215] [2023-11-26 10:45:40,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:40,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:40,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:40,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-26 10:45:40,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 180 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 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) [2023-11-26 10:45:40,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:40,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-26 10:45:40,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:42,266 INFO L124 PetriNetUnfolderBase]: 8111/17552 cut-off events. [2023-11-26 10:45:42,267 INFO L125 PetriNetUnfolderBase]: For 1797/1797 co-relation queries the response was YES. [2023-11-26 10:45:42,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31159 conditions, 17552 events. 8111/17552 cut-off events. For 1797/1797 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 166760 event pairs, 3597 based on Foata normal form. 184/15128 useless extension candidates. Maximal degree in co-relation 23583. Up to 7877 conditions per place. [2023-11-26 10:45:42,365 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 160 selfloop transitions, 2 changer transitions 0/235 dead transitions. [2023-11-26 10:45:42,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 235 transitions, 914 flow [2023-11-26 10:45:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:45:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-11-26 10:45:42,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7680311890838206 [2023-11-26 10:45:42,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-11-26 10:45:42,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-11-26 10:45:42,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:42,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-11-26 10:45:42,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:42,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:42,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:42,374 INFO L175 Difference]: Start difference. First operand has 149 places, 180 transitions, 457 flow. Second operand 3 states and 394 transitions. [2023-11-26 10:45:42,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 235 transitions, 914 flow [2023-11-26 10:45:42,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 235 transitions, 898 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:45:42,395 INFO L231 Difference]: Finished difference. Result has 149 places, 181 transitions, 465 flow [2023-11-26 10:45:42,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=465, PETRI_PLACES=149, PETRI_TRANSITIONS=181} [2023-11-26 10:45:42,396 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-26 10:45:42,396 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 181 transitions, 465 flow [2023-11-26 10:45:42,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 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) [2023-11-26 10:45:42,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:42,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:42,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:45:42,397 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:42,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:42,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1781427454, now seen corresponding path program 1 times [2023-11-26 10:45:42,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:42,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148165939] [2023-11-26 10:45:42,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:42,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:45:42,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148165939] [2023-11-26 10:45:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148165939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:42,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:42,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:42,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861218334] [2023-11-26 10:45:42,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:42,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:42,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:42,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 171 [2023-11-26 10:45:42,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 181 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:42,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:42,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 171 [2023-11-26 10:45:42,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:44,479 INFO L124 PetriNetUnfolderBase]: 8936/18507 cut-off events. [2023-11-26 10:45:44,479 INFO L125 PetriNetUnfolderBase]: For 1523/1523 co-relation queries the response was YES. [2023-11-26 10:45:44,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33687 conditions, 18507 events. 8936/18507 cut-off events. For 1523/1523 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 170334 event pairs, 4902 based on Foata normal form. 184/15861 useless extension candidates. Maximal degree in co-relation 25620. Up to 10723 conditions per place. [2023-11-26 10:45:44,567 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 141 selfloop transitions, 5 changer transitions 0/215 dead transitions. [2023-11-26 10:45:44,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 215 transitions, 842 flow [2023-11-26 10:45:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:44,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:45:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2023-11-26 10:45:44,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6505847953216374 [2023-11-26 10:45:44,570 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2023-11-26 10:45:44,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2023-11-26 10:45:44,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:44,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2023-11-26 10:45:44,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:44,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:44,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:44,575 INFO L175 Difference]: Start difference. First operand has 149 places, 181 transitions, 465 flow. Second operand 4 states and 445 transitions. [2023-11-26 10:45:44,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 215 transitions, 842 flow [2023-11-26 10:45:44,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 215 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:45:44,590 INFO L231 Difference]: Finished difference. Result has 149 places, 179 transitions, 469 flow [2023-11-26 10:45:44,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=469, PETRI_PLACES=149, PETRI_TRANSITIONS=179} [2023-11-26 10:45:44,591 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-26 10:45:44,591 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 179 transitions, 469 flow [2023-11-26 10:45:44,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:44,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:44,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:44,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:45:44,592 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:44,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2007973256, now seen corresponding path program 1 times [2023-11-26 10:45:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:44,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172630026] [2023-11-26 10:45:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:44,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:45:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:44,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172630026] [2023-11-26 10:45:44,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172630026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:44,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:44,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910190043] [2023-11-26 10:45:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:44,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:44,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:44,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-26 10:45:44,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 179 transitions, 469 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:44,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:44,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-26 10:45:44,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:46,447 INFO L124 PetriNetUnfolderBase]: 8605/17724 cut-off events. [2023-11-26 10:45:46,448 INFO L125 PetriNetUnfolderBase]: For 1743/1743 co-relation queries the response was YES. [2023-11-26 10:45:46,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32514 conditions, 17724 events. 8605/17724 cut-off events. For 1743/1743 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 162357 event pairs, 3883 based on Foata normal form. 172/15891 useless extension candidates. Maximal degree in co-relation 28230. Up to 8179 conditions per place. [2023-11-26 10:45:46,567 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 198 selfloop transitions, 3 changer transitions 0/270 dead transitions. [2023-11-26 10:45:46,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 270 transitions, 1082 flow [2023-11-26 10:45:46,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:45:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-11-26 10:45:46,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7426900584795322 [2023-11-26 10:45:46,575 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-11-26 10:45:46,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-11-26 10:45:46,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:46,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-11-26 10:45:46,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:46,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:46,582 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:46,582 INFO L175 Difference]: Start difference. First operand has 149 places, 179 transitions, 469 flow. Second operand 4 states and 508 transitions. [2023-11-26 10:45:46,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 270 transitions, 1082 flow [2023-11-26 10:45:46,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 270 transitions, 1064 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:45:46,627 INFO L231 Difference]: Finished difference. Result has 151 places, 180 transitions, 477 flow [2023-11-26 10:45:46,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=477, PETRI_PLACES=151, PETRI_TRANSITIONS=180} [2023-11-26 10:45:46,630 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 2 predicate places. [2023-11-26 10:45:46,631 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 180 transitions, 477 flow [2023-11-26 10:45:46,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:46,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:46,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:46,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:45:46,632 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:46,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:46,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2042360913, now seen corresponding path program 1 times [2023-11-26 10:45:46,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:46,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603608088] [2023-11-26 10:45:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:46,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:45:46,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:46,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603608088] [2023-11-26 10:45:46,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603608088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:46,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:46,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:46,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425619268] [2023-11-26 10:45:46,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:46,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:46,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:46,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:46,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:46,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-26 10:45:46,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 180 transitions, 477 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:46,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:46,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-26 10:45:46,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:48,409 INFO L124 PetriNetUnfolderBase]: 7643/17302 cut-off events. [2023-11-26 10:45:48,409 INFO L125 PetriNetUnfolderBase]: For 2035/2035 co-relation queries the response was YES. [2023-11-26 10:45:48,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30877 conditions, 17302 events. 7643/17302 cut-off events. For 2035/2035 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 168763 event pairs, 3601 based on Foata normal form. 0/14856 useless extension candidates. Maximal degree in co-relation 23076. Up to 8130 conditions per place. [2023-11-26 10:45:48,518 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 136 selfloop transitions, 6 changer transitions 0/216 dead transitions. [2023-11-26 10:45:48,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 216 transitions, 842 flow [2023-11-26 10:45:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:45:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2023-11-26 10:45:48,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6549707602339181 [2023-11-26 10:45:48,522 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2023-11-26 10:45:48,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2023-11-26 10:45:48,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:48,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2023-11-26 10:45:48,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:48,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:48,527 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:48,527 INFO L175 Difference]: Start difference. First operand has 151 places, 180 transitions, 477 flow. Second operand 4 states and 448 transitions. [2023-11-26 10:45:48,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 216 transitions, 842 flow [2023-11-26 10:45:48,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 216 transitions, 838 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:45:48,564 INFO L231 Difference]: Finished difference. Result has 152 places, 180 transitions, 494 flow [2023-11-26 10:45:48,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=494, PETRI_PLACES=152, PETRI_TRANSITIONS=180} [2023-11-26 10:45:48,566 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 3 predicate places. [2023-11-26 10:45:48,566 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 180 transitions, 494 flow [2023-11-26 10:45:48,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:48,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:48,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:48,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:45:48,568 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:48,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1320561037, now seen corresponding path program 1 times [2023-11-26 10:45:48,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:48,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643416894] [2023-11-26 10:45:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:48,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:45:48,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:48,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643416894] [2023-11-26 10:45:48,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643416894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:48,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8269368] [2023-11-26 10:45:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:48,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:48,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:48,729 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:48,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:45:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:45:48,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:45:48,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:45:48,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8269368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:45:48,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:45:48,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 10:45:48,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522972352] [2023-11-26 10:45:48,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:48,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:45:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:48,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:45:48,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:45:48,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-26 10:45:48,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 180 transitions, 494 flow. Second operand has 11 states, 11 states have (on average 87.9090909090909) internal successors, (967), 11 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:48,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:48,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-26 10:45:48,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:50,759 INFO L124 PetriNetUnfolderBase]: 7620/17187 cut-off events. [2023-11-26 10:45:50,759 INFO L125 PetriNetUnfolderBase]: For 3134/3134 co-relation queries the response was YES. [2023-11-26 10:45:50,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31743 conditions, 17187 events. 7620/17187 cut-off events. For 3134/3134 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 167359 event pairs, 5014 based on Foata normal form. 0/14845 useless extension candidates. Maximal degree in co-relation 23111. Up to 11160 conditions per place. [2023-11-26 10:45:51,020 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 78 selfloop transitions, 24 changer transitions 0/176 dead transitions. [2023-11-26 10:45:51,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 176 transitions, 684 flow [2023-11-26 10:45:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:45:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:45:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 691 transitions. [2023-11-26 10:45:51,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772765246449457 [2023-11-26 10:45:51,030 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 691 transitions. [2023-11-26 10:45:51,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 691 transitions. [2023-11-26 10:45:51,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:51,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 691 transitions. [2023-11-26 10:45:51,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.71428571428571) internal successors, (691), 7 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,040 INFO L175 Difference]: Start difference. First operand has 152 places, 180 transitions, 494 flow. Second operand 7 states and 691 transitions. [2023-11-26 10:45:51,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 176 transitions, 684 flow [2023-11-26 10:45:51,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 176 transitions, 677 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:45:51,069 INFO L231 Difference]: Finished difference. Result has 156 places, 176 transitions, 521 flow [2023-11-26 10:45:51,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=521, PETRI_PLACES=156, PETRI_TRANSITIONS=176} [2023-11-26 10:45:51,070 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 7 predicate places. [2023-11-26 10:45:51,070 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 176 transitions, 521 flow [2023-11-26 10:45:51,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 87.9090909090909) internal successors, (967), 11 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:51,071 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:51,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:51,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:51,278 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:51,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:51,278 INFO L85 PathProgramCache]: Analyzing trace with hash -362801549, now seen corresponding path program 2 times [2023-11-26 10:45:51,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:51,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157034790] [2023-11-26 10:45:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:51,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:45:51,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:51,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157034790] [2023-11-26 10:45:51,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157034790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:51,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514319141] [2023-11-26 10:45:51,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:45:51,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:51,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:51,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:51,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:45:51,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:45:51,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:45:51,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:45:51,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:45:51,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514319141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:51,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:51,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-11-26 10:45:51,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575178554] [2023-11-26 10:45:51,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:51,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:51,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:45:52,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 171 [2023-11-26 10:45:52,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 176 transitions, 521 flow. Second operand has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:52,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:52,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 171 [2023-11-26 10:45:52,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:54,598 INFO L124 PetriNetUnfolderBase]: 9985/21502 cut-off events. [2023-11-26 10:45:54,598 INFO L125 PetriNetUnfolderBase]: For 3478/3478 co-relation queries the response was YES. [2023-11-26 10:45:54,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39899 conditions, 21502 events. 9985/21502 cut-off events. For 3478/3478 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 208807 event pairs, 6091 based on Foata normal form. 258/19238 useless extension candidates. Maximal degree in co-relation 39774. Up to 13384 conditions per place. [2023-11-26 10:45:54,678 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 211 selfloop transitions, 7 changer transitions 0/286 dead transitions. [2023-11-26 10:45:54,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 286 transitions, 1208 flow [2023-11-26 10:45:54,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:45:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:45:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 657 transitions. [2023-11-26 10:45:54,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2023-11-26 10:45:54,682 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 657 transitions. [2023-11-26 10:45:54,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 657 transitions. [2023-11-26 10:45:54,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:54,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 657 transitions. [2023-11-26 10:45:54,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,688 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,688 INFO L175 Difference]: Start difference. First operand has 156 places, 176 transitions, 521 flow. Second operand 6 states and 657 transitions. [2023-11-26 10:45:54,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 286 transitions, 1208 flow [2023-11-26 10:45:54,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 286 transitions, 1160 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 10:45:54,731 INFO L231 Difference]: Finished difference. Result has 157 places, 179 transitions, 516 flow [2023-11-26 10:45:54,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=516, PETRI_PLACES=157, PETRI_TRANSITIONS=179} [2023-11-26 10:45:54,732 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 8 predicate places. [2023-11-26 10:45:54,732 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 179 transitions, 516 flow [2023-11-26 10:45:54,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:54,733 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:54,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:54,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 10:45:54,938 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:54,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1568085010, now seen corresponding path program 1 times [2023-11-26 10:45:54,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:54,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924055927] [2023-11-26 10:45:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:54,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:45:55,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924055927] [2023-11-26 10:45:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924055927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:55,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:55,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319683383] [2023-11-26 10:45:55,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:55,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:55,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:55,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-26 10:45:55,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 179 transitions, 516 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:55,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-26 10:45:55,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:57,033 INFO L124 PetriNetUnfolderBase]: 9868/21519 cut-off events. [2023-11-26 10:45:57,033 INFO L125 PetriNetUnfolderBase]: For 5868/6083 co-relation queries the response was YES. [2023-11-26 10:45:57,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41130 conditions, 21519 events. 9868/21519 cut-off events. For 5868/6083 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 211085 event pairs, 5153 based on Foata normal form. 91/18970 useless extension candidates. Maximal degree in co-relation 35941. Up to 11296 conditions per place. [2023-11-26 10:45:57,138 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 144 selfloop transitions, 7 changer transitions 0/221 dead transitions. [2023-11-26 10:45:57,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 221 transitions, 969 flow [2023-11-26 10:45:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:45:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2023-11-26 10:45:57,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6593567251461988 [2023-11-26 10:45:57,141 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2023-11-26 10:45:57,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2023-11-26 10:45:57,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:57,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2023-11-26 10:45:57,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:57,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:57,146 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:57,146 INFO L175 Difference]: Start difference. First operand has 157 places, 179 transitions, 516 flow. Second operand 4 states and 451 transitions. [2023-11-26 10:45:57,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 221 transitions, 969 flow [2023-11-26 10:45:57,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 221 transitions, 954 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:45:57,180 INFO L231 Difference]: Finished difference. Result has 157 places, 179 transitions, 529 flow [2023-11-26 10:45:57,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=157, PETRI_TRANSITIONS=179} [2023-11-26 10:45:57,181 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 8 predicate places. [2023-11-26 10:45:57,181 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 179 transitions, 529 flow [2023-11-26 10:45:57,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:57,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:57,182 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:57,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:45:57,182 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:45:57,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:57,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1638055575, now seen corresponding path program 1 times [2023-11-26 10:45:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:57,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772144678] [2023-11-26 10:45:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:57,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:45:57,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772144678] [2023-11-26 10:45:57,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772144678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874347987] [2023-11-26 10:45:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:57,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:57,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:57,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:57,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:45:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:57,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:45:57,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:45:57,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:45:57,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874347987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:45:57,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:45:57,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-26 10:45:57,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210342526] [2023-11-26 10:45:57,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:57,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 10:45:57,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:57,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 10:45:57,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-11-26 10:45:58,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-26 10:45:58,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 179 transitions, 529 flow. Second operand has 23 states, 23 states have (on average 87.43478260869566) internal successors, (2011), 23 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:58,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:58,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-26 10:45:58,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:00,118 INFO L124 PetriNetUnfolderBase]: 8982/20495 cut-off events. [2023-11-26 10:46:00,118 INFO L125 PetriNetUnfolderBase]: For 6796/6971 co-relation queries the response was YES. [2023-11-26 10:46:00,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39597 conditions, 20495 events. 8982/20495 cut-off events. For 6796/6971 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 207269 event pairs, 6058 based on Foata normal form. 79/18330 useless extension candidates. Maximal degree in co-relation 34843. Up to 13230 conditions per place. [2023-11-26 10:46:00,219 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 80 selfloop transitions, 22 changer transitions 0/175 dead transitions. [2023-11-26 10:46:00,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 175 transitions, 719 flow [2023-11-26 10:46:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:46:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 10:46:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1043 transitions. [2023-11-26 10:46:00,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544922913343966 [2023-11-26 10:46:00,223 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1043 transitions. [2023-11-26 10:46:00,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1043 transitions. [2023-11-26 10:46:00,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:00,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1043 transitions. [2023-11-26 10:46:00,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 94.81818181818181) internal successors, (1043), 11 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,232 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,233 INFO L175 Difference]: Start difference. First operand has 157 places, 179 transitions, 529 flow. Second operand 11 states and 1043 transitions. [2023-11-26 10:46:00,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 175 transitions, 719 flow [2023-11-26 10:46:00,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 175 transitions, 711 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:46:00,488 INFO L231 Difference]: Finished difference. Result has 165 places, 175 transitions, 551 flow [2023-11-26 10:46:00,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=551, PETRI_PLACES=165, PETRI_TRANSITIONS=175} [2023-11-26 10:46:00,489 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 16 predicate places. [2023-11-26 10:46:00,489 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 175 transitions, 551 flow [2023-11-26 10:46:00,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 87.43478260869566) internal successors, (2011), 23 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:00,490 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:00,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:00,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a39c0e-4d6c-442f-be12-94ea4e214a1d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:00,691 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:46:00,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1109761687, now seen corresponding path program 2 times [2023-11-26 10:46:00,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:00,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855131017] [2023-11-26 10:46:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 10:46:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:00,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855131017] [2023-11-26 10:46:00,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855131017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:00,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:00,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:46:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616313685] [2023-11-26 10:46:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:00,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:46:00,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:46:00,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:00,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 171 [2023-11-26 10:46:00,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 175 transitions, 551 flow. Second operand has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:00,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 171 [2023-11-26 10:46:00,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:04,120 INFO L124 PetriNetUnfolderBase]: 12168/24297 cut-off events. [2023-11-26 10:46:04,120 INFO L125 PetriNetUnfolderBase]: For 6258/6266 co-relation queries the response was YES. [2023-11-26 10:46:04,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48727 conditions, 24297 events. 12168/24297 cut-off events. For 6258/6266 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 224485 event pairs, 4872 based on Foata normal form. 548/22703 useless extension candidates. Maximal degree in co-relation 48611. Up to 10937 conditions per place. [2023-11-26 10:46:04,260 INFO L140 encePairwiseOnDemand]: 158/171 looper letters, 279 selfloop transitions, 15 changer transitions 0/357 dead transitions. [2023-11-26 10:46:04,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 357 transitions, 1588 flow [2023-11-26 10:46:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:46:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:46:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 852 transitions. [2023-11-26 10:46:04,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2023-11-26 10:46:04,263 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 852 transitions. [2023-11-26 10:46:04,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 852 transitions. [2023-11-26 10:46:04,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:04,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 852 transitions. [2023-11-26 10:46:04,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 106.5) internal successors, (852), 8 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:04,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:04,271 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:04,271 INFO L175 Difference]: Start difference. First operand has 165 places, 175 transitions, 551 flow. Second operand 8 states and 852 transitions. [2023-11-26 10:46:04,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 357 transitions, 1588 flow [2023-11-26 10:46:04,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 357 transitions, 1544 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-26 10:46:04,466 INFO L231 Difference]: Finished difference. Result has 165 places, 177 transitions, 568 flow [2023-11-26 10:46:04,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=165, PETRI_TRANSITIONS=177} [2023-11-26 10:46:04,467 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 16 predicate places. [2023-11-26 10:46:04,467 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 177 transitions, 568 flow [2023-11-26 10:46:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:04,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:04,468 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:04,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 10:46:04,468 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:46:04,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:04,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1784219566, now seen corresponding path program 1 times [2023-11-26 10:46:04,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:04,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598493044] [2023-11-26 10:46:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:04,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 10:46:04,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:04,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598493044] [2023-11-26 10:46:04,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598493044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:04,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:04,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:46:04,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623083955] [2023-11-26 10:46:04,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:04,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:04,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:04,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:04,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-26 10:46:04,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 177 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:04,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:04,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-26 10:46:04,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:06,538 INFO L124 PetriNetUnfolderBase]: 8915/18410 cut-off events. [2023-11-26 10:46:06,538 INFO L125 PetriNetUnfolderBase]: For 14081/14665 co-relation queries the response was YES. [2023-11-26 10:46:06,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39567 conditions, 18410 events. 8915/18410 cut-off events. For 14081/14665 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 168073 event pairs, 4283 based on Foata normal form. 328/17317 useless extension candidates. Maximal degree in co-relation 36405. Up to 9209 conditions per place. [2023-11-26 10:46:06,631 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 229 selfloop transitions, 4 changer transitions 18/320 dead transitions. [2023-11-26 10:46:06,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 320 transitions, 1647 flow [2023-11-26 10:46:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:46:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:46:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 627 transitions. [2023-11-26 10:46:06,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-26 10:46:06,634 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 627 transitions. [2023-11-26 10:46:06,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 627 transitions. [2023-11-26 10:46:06,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:06,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 627 transitions. [2023-11-26 10:46:06,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:06,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:06,638 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:06,639 INFO L175 Difference]: Start difference. First operand has 165 places, 177 transitions, 568 flow. Second operand 5 states and 627 transitions. [2023-11-26 10:46:06,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 320 transitions, 1647 flow [2023-11-26 10:46:06,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 320 transitions, 1612 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:46:06,755 INFO L231 Difference]: Finished difference. Result has 169 places, 179 transitions, 582 flow [2023-11-26 10:46:06,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=582, PETRI_PLACES=169, PETRI_TRANSITIONS=179} [2023-11-26 10:46:06,756 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 20 predicate places. [2023-11-26 10:46:06,756 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 179 transitions, 582 flow [2023-11-26 10:46:06,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:06,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:06,756 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:06,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 10:46:06,757 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-26 10:46:06,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:06,757 INFO L85 PathProgramCache]: Analyzing trace with hash 989791551, now seen corresponding path program 1 times [2023-11-26 10:46:06,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:06,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298024601] [2023-11-26 10:46:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:06,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 10:46:06,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:06,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298024601] [2023-11-26 10:46:06,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298024601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:06,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:06,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:06,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653477046] [2023-11-26 10:46:06,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:06,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:06,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:06,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 171 [2023-11-26 10:46:06,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 179 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:06,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:06,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 171 [2023-11-26 10:46:06,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:09,133 INFO L124 PetriNetUnfolderBase]: 9413/19068 cut-off events. [2023-11-26 10:46:09,133 INFO L125 PetriNetUnfolderBase]: For 10868/10989 co-relation queries the response was YES. [2023-11-26 10:46:09,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42033 conditions, 19068 events. 9413/19068 cut-off events. For 10868/10989 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 170310 event pairs, 4347 based on Foata normal form. 327/18241 useless extension candidates. Maximal degree in co-relation 38853. Up to 9509 conditions per place.