./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --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_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/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_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/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_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:49:01,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:49:01,600 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:49:01,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:49:01,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:49:01,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:49:01,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:49:01,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:49:01,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:49:01,680 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:49:01,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:49:01,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:49:01,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:49:01,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:49:01,685 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:49:01,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:49:01,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:49:01,688 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:49:01,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:49:01,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:49:01,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:49:01,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:49:01,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:49:01,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:49:01,692 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:49:01,693 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:49:01,694 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:49:01,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:49:01,695 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:49:01,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:49:01,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:49:01,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:49:01,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:49:01,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:01,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:49:01,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:49:01,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:49:01,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:49:01,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:49:01,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:49:01,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:49:01,704 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:49:01,704 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:49:01,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:49:01,705 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_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2023-11-26 11:49:02,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:49:02,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:49:02,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:49:02,115 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:49:02,116 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:49:02,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-11-26 11:49:05,966 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:49:06,363 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:49:06,363 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-11-26 11:49:06,393 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/data/a91733f9d/7c2321218f4b4095b9950290ad0114e2/FLAG00d88c386 [2023-11-26 11:49:06,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/data/a91733f9d/7c2321218f4b4095b9950290ad0114e2 [2023-11-26 11:49:06,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:49:06,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:49:06,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:06,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:49:06,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:49:06,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:06" (1/1) ... [2023-11-26 11:49:06,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee3a4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:06, skipping insertion in model container [2023-11-26 11:49:06,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:06" (1/1) ... [2023-11-26 11:49:06,513 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:49:07,297 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:49:07,298 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:49:07,301 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:49:07,302 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:49:07,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:07,387 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:49:07,435 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:49:07,436 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:49:07,437 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:49:07,437 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:49:07,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:07,548 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:49:07,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07 WrapperNode [2023-11-26 11:49:07,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:07,551 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:07,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:49:07,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:49:07,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,658 INFO L138 Inliner]: procedures = 274, calls = 39, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 174 [2023-11-26 11:49:07,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:07,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:49:07,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:49:07,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:49:07,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,721 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [1, 1, 18]. 90 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 14 writes are split as follows [1, 1, 12]. [2023-11-26 11:49:07,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:49:07,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:49:07,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:49:07,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:49:07,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (1/1) ... [2023-11-26 11:49:07,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:07,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:07,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:49:07,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:49:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-26 11:49:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-26 11:49:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:49:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:49:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:49:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:49:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:49:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:49:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:49:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:49:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:49:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:49:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:49:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:49:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:49:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:49:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:49:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:49:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:49:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:49:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:49:07,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:49:07,934 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 11:49:08,184 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:08,186 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:08,658 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:09,275 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:09,275 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 11:49:09,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:09 BoogieIcfgContainer [2023-11-26 11:49:09,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:09,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:09,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:09,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:09,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:49:06" (1/3) ... [2023-11-26 11:49:09,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e47f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:09, skipping insertion in model container [2023-11-26 11:49:09,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:07" (2/3) ... [2023-11-26 11:49:09,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e47f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:09, skipping insertion in model container [2023-11-26 11:49:09,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:09" (3/3) ... [2023-11-26 11:49:09,290 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2023-11-26 11:49:09,302 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:49:09,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:09,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-26 11:49:09,317 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:49:09,402 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:49:09,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 122 flow [2023-11-26 11:49:09,533 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2023-11-26 11:49:09,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:09,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 6/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 156 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-26 11:49:09,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 122 flow [2023-11-26 11:49:09,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 116 flow [2023-11-26 11:49:09,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:09,567 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;@a679727, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:09,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-26 11:49:09,574 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:09,575 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-26 11:49:09,575 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:09,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:09,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:49:09,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:09,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash 15790355, now seen corresponding path program 1 times [2023-11-26 11:49:09,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:09,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916306727] [2023-11-26 11:49:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:09,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:09,751 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:09,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951808364] [2023-11-26 11:49:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:09,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:09,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:09,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:09,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:49:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:09,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:49:09,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:09,994 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 11:49:09,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:09,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:09,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916306727] [2023-11-26 11:49:09,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951808364] [2023-11-26 11:49:09,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951808364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:09,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:09,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:49:10,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786286154] [2023-11-26 11:49:10,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:10,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:10,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:10,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:10,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-26 11:49:10,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 11:49:10,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:10,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-26 11:49:10,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:10,683 INFO L124 PetriNetUnfolderBase]: 303/693 cut-off events. [2023-11-26 11:49:10,683 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:49:10,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 693 events. 303/693 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3588 event pairs, 224 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 1159. Up to 490 conditions per place. [2023-11-26 11:49:10,702 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-26 11:49:10,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 202 flow [2023-11-26 11:49:10,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-26 11:49:10,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2023-11-26 11:49:10,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-26 11:49:10,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-26 11:49:10,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:10,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-26 11:49:10,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 11:49:10,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 11:49:10,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 11:49:10,748 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 116 flow. Second operand 3 states and 113 transitions. [2023-11-26 11:49:10,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 202 flow [2023-11-26 11:49:10,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:10,766 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 130 flow [2023-11-26 11:49:10,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-11-26 11:49:10,775 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2023-11-26 11:49:10,775 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 130 flow [2023-11-26 11:49:10,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 11:49:10,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:10,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:49:10,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:10,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:49:10,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:10,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash 15790370, now seen corresponding path program 1 times [2023-11-26 11:49:10,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:10,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041866875] [2023-11-26 11:49:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:10,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:11,321 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 11:49:11,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:11,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041866875] [2023-11-26 11:49:11,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041866875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:11,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:11,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:11,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253373985] [2023-11-26 11:49:11,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:11,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:11,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:11,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:11,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-26 11:49:11,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 11:49:11,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:11,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-26 11:49:11,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:11,932 INFO L124 PetriNetUnfolderBase]: 303/707 cut-off events. [2023-11-26 11:49:11,932 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:49:11,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 707 events. 303/707 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3708 event pairs, 224 based on Foata normal form. 4/602 useless extension candidates. Maximal degree in co-relation 1200. Up to 495 conditions per place. [2023-11-26 11:49:11,941 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 34 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-26 11:49:11,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 206 flow [2023-11-26 11:49:11,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-26 11:49:11,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6432748538011696 [2023-11-26 11:49:11,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-26 11:49:11,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-26 11:49:11,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:11,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-26 11:49:11,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:11,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 11:49:11,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 11:49:11,957 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 130 flow. Second operand 3 states and 110 transitions. [2023-11-26 11:49:11,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 206 flow [2023-11-26 11:49:11,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:49:11,962 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 144 flow [2023-11-26 11:49:11,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-26 11:49:11,963 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-26 11:49:11,964 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 144 flow [2023-11-26 11:49:11,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 11:49:11,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:11,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:49:11,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:49:11,966 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:11,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:11,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2005322115, now seen corresponding path program 1 times [2023-11-26 11:49:11,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:11,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931629519] [2023-11-26 11:49:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:11,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:12,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:12,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960374098] [2023-11-26 11:49:12,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:12,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:12,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:12,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:12,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:49:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:12,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:49:12,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:12,403 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 11:49:12,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:12,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931629519] [2023-11-26 11:49:12,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:12,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960374098] [2023-11-26 11:49:12,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960374098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:12,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:12,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:12,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082869669] [2023-11-26 11:49:12,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:12,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:12,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:12,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:12,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:12,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-26 11:49:12,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 11:49:12,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:12,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-26 11:49:12,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:12,808 INFO L124 PetriNetUnfolderBase]: 303/703 cut-off events. [2023-11-26 11:49:12,809 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-26 11:49:12,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 703 events. 303/703 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3678 event pairs, 224 based on Foata normal form. 4/602 useless extension candidates. Maximal degree in co-relation 1185. Up to 487 conditions per place. [2023-11-26 11:49:12,817 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 29 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-11-26 11:49:12,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 210 flow [2023-11-26 11:49:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:49:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:49:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2023-11-26 11:49:12,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2023-11-26 11:49:12,825 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 129 transitions. [2023-11-26 11:49:12,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 129 transitions. [2023-11-26 11:49:12,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:12,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 129 transitions. [2023-11-26 11:49:12,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 11:49:12,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 11:49:12,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 11:49:12,832 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 144 flow. Second operand 4 states and 129 transitions. [2023-11-26 11:49:12,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 210 flow [2023-11-26 11:49:12,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:49:12,838 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 150 flow [2023-11-26 11:49:12,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-11-26 11:49:12,841 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-11-26 11:49:12,841 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 150 flow [2023-11-26 11:49:12,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 11:49:12,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:12,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:12,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:13,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:13,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:13,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:13,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2035442908, now seen corresponding path program 1 times [2023-11-26 11:49:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:13,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248642666] [2023-11-26 11:49:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:13,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:13,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:13,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832673433] [2023-11-26 11:49:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:13,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:13,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:13,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:13,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:49:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:13,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:49:13,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:13,363 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 11:49:13,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:13,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:13,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248642666] [2023-11-26 11:49:13,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:13,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832673433] [2023-11-26 11:49:13,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832673433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:13,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:13,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:13,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981652581] [2023-11-26 11:49:13,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:13,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:13,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:13,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:13,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-26 11:49:13,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 11:49:13,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:13,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-26 11:49:13,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:14,020 INFO L124 PetriNetUnfolderBase]: 303/701 cut-off events. [2023-11-26 11:49:14,020 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-26 11:49:14,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 701 events. 303/701 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3660 event pairs, 224 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 1172. Up to 495 conditions per place. [2023-11-26 11:49:14,027 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 32 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-11-26 11:49:14,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 224 flow [2023-11-26 11:49:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:49:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:49:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2023-11-26 11:49:14,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2023-11-26 11:49:14,029 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 131 transitions. [2023-11-26 11:49:14,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 131 transitions. [2023-11-26 11:49:14,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:14,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 131 transitions. [2023-11-26 11:49:14,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 11:49:14,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 11:49:14,032 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 11:49:14,032 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 150 flow. Second operand 4 states and 131 transitions. [2023-11-26 11:49:14,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 224 flow [2023-11-26 11:49:14,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:49:14,036 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 156 flow [2023-11-26 11:49:14,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-11-26 11:49:14,037 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-26 11:49:14,038 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 156 flow [2023-11-26 11:49:14,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 11:49:14,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:14,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:14,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:14,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:14,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1850498392, now seen corresponding path program 1 times [2023-11-26 11:49:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:14,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589022020] [2023-11-26 11:49:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:14,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:14,293 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:14,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802936950] [2023-11-26 11:49:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:14,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:14,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:14,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:14,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:49:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:14,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:49:14,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:14,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:14,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:14,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589022020] [2023-11-26 11:49:14,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:14,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802936950] [2023-11-26 11:49:14,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802936950] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:14,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:14,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:49:14,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084342741] [2023-11-26 11:49:14,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:14,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:49:14,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:14,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:49:14,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:49:14,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2023-11-26 11:49:14,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 156 flow. Second operand has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 11:49:14,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:14,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2023-11-26 11:49:14,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:15,370 INFO L124 PetriNetUnfolderBase]: 303/715 cut-off events. [2023-11-26 11:49:15,371 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-26 11:49:15,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 715 events. 303/715 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3748 event pairs, 224 based on Foata normal form. 6/616 useless extension candidates. Maximal degree in co-relation 1204. Up to 489 conditions per place. [2023-11-26 11:49:15,378 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 34 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2023-11-26 11:49:15,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 252 flow [2023-11-26 11:49:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:49:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:49:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2023-11-26 11:49:15,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112781954887218 [2023-11-26 11:49:15,381 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 204 transitions. [2023-11-26 11:49:15,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 204 transitions. [2023-11-26 11:49:15,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:15,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 204 transitions. [2023-11-26 11:49:15,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 11:49:15,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:49:15,388 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:49:15,388 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 156 flow. Second operand 7 states and 204 transitions. [2023-11-26 11:49:15,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 252 flow [2023-11-26 11:49:15,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:15,396 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 196 flow [2023-11-26 11:49:15,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-11-26 11:49:15,401 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-26 11:49:15,401 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 196 flow [2023-11-26 11:49:15,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 11:49:15,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:15,402 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2023-11-26 11:49:15,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:15,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:15,610 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:15,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:15,611 INFO L85 PathProgramCache]: Analyzing trace with hash 313655140, now seen corresponding path program 1 times [2023-11-26 11:49:15,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:15,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124568167] [2023-11-26 11:49:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:15,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:15,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:15,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732917621] [2023-11-26 11:49:15,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:15,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:15,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:15,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:15,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:49:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:16,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:49:16,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:16,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:16,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:16,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124568167] [2023-11-26 11:49:16,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:16,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732917621] [2023-11-26 11:49:16,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732917621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:16,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:16,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-26 11:49:16,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708343502] [2023-11-26 11:49:16,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:16,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:49:16,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:16,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:49:16,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:49:16,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2023-11-26 11:49:16,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 196 flow. Second operand has 14 states, 14 states have (on average 24.5) internal successors, (343), 14 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 11:49:16,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:16,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2023-11-26 11:49:16,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:17,425 INFO L124 PetriNetUnfolderBase]: 305/727 cut-off events. [2023-11-26 11:49:17,426 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-26 11:49:17,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 727 events. 305/727 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3822 event pairs, 224 based on Foata normal form. 4/626 useless extension candidates. Maximal degree in co-relation 1245. Up to 489 conditions per place. [2023-11-26 11:49:17,434 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 32 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2023-11-26 11:49:17,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 314 flow [2023-11-26 11:49:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:49:17,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 11:49:17,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 298 transitions. [2023-11-26 11:49:17,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527910685805425 [2023-11-26 11:49:17,438 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 298 transitions. [2023-11-26 11:49:17,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 298 transitions. [2023-11-26 11:49:17,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:17,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 298 transitions. [2023-11-26 11:49:17,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.09090909090909) internal successors, (298), 11 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 11:49:17,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 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 11:49:17,443 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 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 11:49:17,443 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 196 flow. Second operand 11 states and 298 transitions. [2023-11-26 11:49:17,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 314 flow [2023-11-26 11:49:17,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 65 transitions, 302 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-26 11:49:17,454 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 235 flow [2023-11-26 11:49:17,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=235, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2023-11-26 11:49:17,460 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-11-26 11:49:17,463 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 235 flow [2023-11-26 11:49:17,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.5) internal successors, (343), 14 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 11:49:17,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:17,464 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-26 11:49:17,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:17,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:49:17,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:17,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:17,674 INFO L85 PathProgramCache]: Analyzing trace with hash 774895336, now seen corresponding path program 2 times [2023-11-26 11:49:17,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:17,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661613625] [2023-11-26 11:49:17,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:17,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:17,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:17,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585334589] [2023-11-26 11:49:17,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:49:17,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:17,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:17,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:17,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:49:18,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:49:18,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:18,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:49:18,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 11:49:18,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:18,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661613625] [2023-11-26 11:49:18,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585334589] [2023-11-26 11:49:18,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585334589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:18,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:18,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:18,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65955715] [2023-11-26 11:49:18,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:18,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:18,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:18,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:18,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:18,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-26 11:49:18,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 11:49:18,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:18,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-26 11:49:18,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:18,609 INFO L124 PetriNetUnfolderBase]: 305/725 cut-off events. [2023-11-26 11:49:18,609 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-11-26 11:49:18,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 725 events. 305/725 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3796 event pairs, 224 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 1299. Up to 482 conditions per place. [2023-11-26 11:49:18,618 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 34 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-11-26 11:49:18,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 62 transitions, 313 flow [2023-11-26 11:49:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:49:18,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:49:18,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2023-11-26 11:49:18,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2023-11-26 11:49:18,621 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 129 transitions. [2023-11-26 11:49:18,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 129 transitions. [2023-11-26 11:49:18,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:18,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 129 transitions. [2023-11-26 11:49:18,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 11:49:18,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 11:49:18,623 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 11:49:18,624 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 235 flow. Second operand 4 states and 129 transitions. [2023-11-26 11:49:18,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 62 transitions, 313 flow [2023-11-26 11:49:18,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 273 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-26 11:49:18,628 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 205 flow [2023-11-26 11:49:18,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2023-11-26 11:49:18,629 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-26 11:49:18,629 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 205 flow [2023-11-26 11:49:18,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 11:49:18,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:18,630 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-26 11:49:18,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:18,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:49:18,837 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:18,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1748047868, now seen corresponding path program 1 times [2023-11-26 11:49:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:18,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853400505] [2023-11-26 11:49:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:18,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:18,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373612510] [2023-11-26 11:49:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:18,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:18,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:18,926 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:18,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:49:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:19,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:49:19,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:19,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:19,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853400505] [2023-11-26 11:49:19,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373612510] [2023-11-26 11:49:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373612510] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:19,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:19,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-26 11:49:19,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712804851] [2023-11-26 11:49:19,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:19,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 11:49:19,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 11:49:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:49:19,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2023-11-26 11:49:19,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 205 flow. Second operand has 16 states, 16 states have (on average 24.4375) internal successors, (391), 16 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 11:49:19,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:19,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2023-11-26 11:49:19,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:21,660 INFO L124 PetriNetUnfolderBase]: 303/759 cut-off events. [2023-11-26 11:49:21,660 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-26 11:49:21,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 759 events. 303/759 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3771 event pairs, 224 based on Foata normal form. 8/664 useless extension candidates. Maximal degree in co-relation 1265. Up to 489 conditions per place. [2023-11-26 11:49:21,668 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 37 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2023-11-26 11:49:21,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 368 flow [2023-11-26 11:49:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:49:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:49:21,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 400 transitions. [2023-11-26 11:49:21,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2023-11-26 11:49:21,673 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 400 transitions. [2023-11-26 11:49:21,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 400 transitions. [2023-11-26 11:49:21,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:21,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 400 transitions. [2023-11-26 11:49:21,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 26.666666666666668) internal successors, (400), 15 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 11:49:21,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 11:49:21,679 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 11:49:21,679 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 205 flow. Second operand 15 states and 400 transitions. [2023-11-26 11:49:21,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 368 flow [2023-11-26 11:49:21,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 347 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:49:21,684 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 271 flow [2023-11-26 11:49:21,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=271, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2023-11-26 11:49:21,685 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2023-11-26 11:49:21,686 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 271 flow [2023-11-26 11:49:21,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.4375) internal successors, (391), 16 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 11:49:21,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:21,687 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2023-11-26 11:49:21,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:21,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:21,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:21,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1741799548, now seen corresponding path program 2 times [2023-11-26 11:49:21,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:21,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056110357] [2023-11-26 11:49:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:21,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:22,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:22,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000530216] [2023-11-26 11:49:22,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:49:22,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:22,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:22,024 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:22,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:49:22,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:49:22,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:22,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:49:22,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-26 11:49:22,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:22,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:22,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056110357] [2023-11-26 11:49:22,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:22,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000530216] [2023-11-26 11:49:22,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000530216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:22,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:22,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:22,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572546249] [2023-11-26 11:49:22,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:22,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:22,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:22,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:22,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-26 11:49:22,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 11:49:22,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:22,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-26 11:49:22,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:23,183 INFO L124 PetriNetUnfolderBase]: 303/758 cut-off events. [2023-11-26 11:49:23,183 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-26 11:49:23,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 758 events. 303/758 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3759 event pairs, 224 based on Foata normal form. 1/656 useless extension candidates. Maximal degree in co-relation 1287. Up to 501 conditions per place. [2023-11-26 11:49:23,190 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 58 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2023-11-26 11:49:23,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 518 flow [2023-11-26 11:49:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:49:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:49:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-26 11:49:23,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2023-11-26 11:49:23,191 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-26 11:49:23,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-26 11:49:23,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:23,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-26 11:49:23,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 11:49:23,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 11:49:23,194 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 11:49:23,194 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 271 flow. Second operand 4 states and 134 transitions. [2023-11-26 11:49:23,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 518 flow [2023-11-26 11:49:23,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 494 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 11:49:23,198 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 283 flow [2023-11-26 11:49:23,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2023-11-26 11:49:23,199 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2023-11-26 11:49:23,199 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 283 flow [2023-11-26 11:49:23,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 11:49:23,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:23,200 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1] [2023-11-26 11:49:23,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:23,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:23,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:23,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:23,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1256899045, now seen corresponding path program 1 times [2023-11-26 11:49:23,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:23,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896835549] [2023-11-26 11:49:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:23,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:23,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:23,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048644566] [2023-11-26 11:49:23,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:23,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:23,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:23,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:23,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:49:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:24,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:49:24,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:49:24,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:49:24,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:24,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896835549] [2023-11-26 11:49:24,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:24,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048644566] [2023-11-26 11:49:24,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048644566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:24,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:24,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-26 11:49:24,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93235774] [2023-11-26 11:49:24,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:24,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-26 11:49:24,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:24,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-26 11:49:24,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-26 11:49:24,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2023-11-26 11:49:24,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 283 flow. Second operand has 32 states, 32 states have (on average 24.625) internal successors, (788), 32 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 11:49:24,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:24,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2023-11-26 11:49:24,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:27,556 INFO L124 PetriNetUnfolderBase]: 303/854 cut-off events. [2023-11-26 11:49:27,556 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2023-11-26 11:49:27,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 854 events. 303/854 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3806 event pairs, 224 based on Foata normal form. 16/767 useless extension candidates. Maximal degree in co-relation 1532. Up to 489 conditions per place. [2023-11-26 11:49:27,564 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 46 selfloop transitions, 31 changer transitions 0/97 dead transitions. [2023-11-26 11:49:27,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 97 transitions, 687 flow [2023-11-26 11:49:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 11:49:27,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-26 11:49:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 796 transitions. [2023-11-26 11:49:27,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504810413129598 [2023-11-26 11:49:27,569 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 796 transitions. [2023-11-26 11:49:27,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 796 transitions. [2023-11-26 11:49:27,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:27,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 796 transitions. [2023-11-26 11:49:27,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 25.677419354838708) internal successors, (796), 31 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 11:49:27,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 57.0) internal successors, (1824), 32 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states 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 11:49:27,579 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 57.0) internal successors, (1824), 32 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states 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 11:49:27,579 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 283 flow. Second operand 31 states and 796 transitions. [2023-11-26 11:49:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 97 transitions, 687 flow [2023-11-26 11:49:27,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 97 transitions, 683 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:27,585 INFO L231 Difference]: Finished difference. Result has 120 places, 86 transitions, 544 flow [2023-11-26 11:49:27,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=544, PETRI_PLACES=120, PETRI_TRANSITIONS=86} [2023-11-26 11:49:27,587 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2023-11-26 11:49:27,587 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 86 transitions, 544 flow [2023-11-26 11:49:27,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 24.625) internal successors, (788), 32 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 11:49:27,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:27,588 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1] [2023-11-26 11:49:27,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:27,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:49:27,797 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:27,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:27,798 INFO L85 PathProgramCache]: Analyzing trace with hash -32461541, now seen corresponding path program 2 times [2023-11-26 11:49:27,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:27,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6749615] [2023-11-26 11:49:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:28,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:28,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495889292] [2023-11-26 11:49:28,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:49:28,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:28,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:28,137 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:28,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:49:29,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:49:29,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:29,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-26 11:49:29,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:49:29,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:49:30,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:30,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6749615] [2023-11-26 11:49:30,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:30,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495889292] [2023-11-26 11:49:30,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495889292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:30,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:30,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2023-11-26 11:49:30,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742443177] [2023-11-26 11:49:30,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:30,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-26 11:49:30,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-26 11:49:30,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2023-11-26 11:49:31,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2023-11-26 11:49:31,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 86 transitions, 544 flow. Second operand has 61 states, 61 states have (on average 24.59016393442623) internal successors, (1500), 61 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 11:49:31,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:31,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2023-11-26 11:49:31,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:37,127 INFO L124 PetriNetUnfolderBase]: 303/1034 cut-off events. [2023-11-26 11:49:37,127 INFO L125 PetriNetUnfolderBase]: For 3508/3508 co-relation queries the response was YES. [2023-11-26 11:49:37,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 1034 events. 303/1034 cut-off events. For 3508/3508 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3883 event pairs, 224 based on Foata normal form. 30/961 useless extension candidates. Maximal degree in co-relation 2038. Up to 489 conditions per place. [2023-11-26 11:49:37,138 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 61 selfloop transitions, 61 changer transitions 0/142 dead transitions. [2023-11-26 11:49:37,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 142 transitions, 1475 flow [2023-11-26 11:49:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-26 11:49:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-26 11:49:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1538 transitions. [2023-11-26 11:49:37,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423353465631291 [2023-11-26 11:49:37,150 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 1538 transitions. [2023-11-26 11:49:37,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 1538 transitions. [2023-11-26 11:49:37,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:37,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 1538 transitions. [2023-11-26 11:49:37,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 25.21311475409836) internal successors, (1538), 61 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states 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 11:49:37,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 57.0) internal successors, (3534), 62 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 11:49:37,172 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 57.0) internal successors, (3534), 62 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 11:49:37,172 INFO L175 Difference]: Start difference. First operand has 120 places, 86 transitions, 544 flow. Second operand 61 states and 1538 transitions. [2023-11-26 11:49:37,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 142 transitions, 1475 flow [2023-11-26 11:49:37,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 142 transitions, 1449 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-11-26 11:49:37,190 INFO L231 Difference]: Finished difference. Result has 184 places, 117 transitions, 1098 flow [2023-11-26 11:49:37,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1098, PETRI_PLACES=184, PETRI_TRANSITIONS=117} [2023-11-26 11:49:37,191 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 128 predicate places. [2023-11-26 11:49:37,191 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 117 transitions, 1098 flow [2023-11-26 11:49:37,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 24.59016393442623) internal successors, (1500), 61 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 11:49:37,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:37,193 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-26 11:49:37,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:37,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:49:37,393 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:37,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:37,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1952215711, now seen corresponding path program 3 times [2023-11-26 11:49:37,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:37,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723625758] [2023-11-26 11:49:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:37,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:37,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:37,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471030489] [2023-11-26 11:49:37,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:49:37,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:37,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:37,953 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:37,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:49:39,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:49:39,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:39,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:49:39,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-26 11:49:39,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:39,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:39,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723625758] [2023-11-26 11:49:39,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:39,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471030489] [2023-11-26 11:49:39,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471030489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:39,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:39,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:49:39,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11990746] [2023-11-26 11:49:39,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:39,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:49:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:39,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:49:39,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:49:39,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2023-11-26 11:49:39,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 117 transitions, 1098 flow. Second operand has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 11:49:39,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:39,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2023-11-26 11:49:39,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:41,154 INFO L124 PetriNetUnfolderBase]: 303/1005 cut-off events. [2023-11-26 11:49:41,154 INFO L125 PetriNetUnfolderBase]: For 3407/3407 co-relation queries the response was YES. [2023-11-26 11:49:41,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 1005 events. 303/1005 cut-off events. For 3407/3407 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3744 event pairs, 224 based on Foata normal form. 29/931 useless extension candidates. Maximal degree in co-relation 2076. Up to 482 conditions per place. [2023-11-26 11:49:41,167 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 94 selfloop transitions, 73 changer transitions 0/184 dead transitions. [2023-11-26 11:49:41,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 184 transitions, 2290 flow [2023-11-26 11:49:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:49:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 11:49:41,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 253 transitions. [2023-11-26 11:49:41,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2023-11-26 11:49:41,170 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 253 transitions. [2023-11-26 11:49:41,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 253 transitions. [2023-11-26 11:49:41,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:41,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 253 transitions. [2023-11-26 11:49:41,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 23.0) internal successors, (253), 11 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 11:49:41,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 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 11:49:41,174 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 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 11:49:41,174 INFO L175 Difference]: Start difference. First operand has 184 places, 117 transitions, 1098 flow. Second operand 11 states and 253 transitions. [2023-11-26 11:49:41,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 184 transitions, 2290 flow [2023-11-26 11:49:41,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 184 transitions, 2174 flow, removed 2 selfloop flow, removed 28 redundant places. [2023-11-26 11:49:41,213 INFO L231 Difference]: Finished difference. Result has 171 places, 183 transitions, 2254 flow [2023-11-26 11:49:41,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2254, PETRI_PLACES=171, PETRI_TRANSITIONS=183} [2023-11-26 11:49:41,215 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 115 predicate places. [2023-11-26 11:49:41,215 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 183 transitions, 2254 flow [2023-11-26 11:49:41,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 11:49:41,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:41,216 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:41,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:41,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:49:41,424 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:41,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:41,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1338585161, now seen corresponding path program 1 times [2023-11-26 11:49:41,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:41,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515968261] [2023-11-26 11:49:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:41,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:41,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:41,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870712500] [2023-11-26 11:49:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:41,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:41,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:41,964 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:41,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:49:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:43,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:49:43,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-26 11:49:43,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-26 11:49:44,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:44,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515968261] [2023-11-26 11:49:44,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870712500] [2023-11-26 11:49:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870712500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:44,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-26 11:49:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856286639] [2023-11-26 11:49:44,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:44,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:49:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:49:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:49:44,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-26 11:49:44,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 183 transitions, 2254 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 11:49:44,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:44,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-26 11:49:44,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:45,706 INFO L124 PetriNetUnfolderBase]: 304/1190 cut-off events. [2023-11-26 11:49:45,706 INFO L125 PetriNetUnfolderBase]: For 6713/6713 co-relation queries the response was YES. [2023-11-26 11:49:45,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4072 conditions, 1190 events. 304/1190 cut-off events. For 6713/6713 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3581 event pairs, 224 based on Foata normal form. 3/1090 useless extension candidates. Maximal degree in co-relation 3191. Up to 483 conditions per place. [2023-11-26 11:49:45,719 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 210 selfloop transitions, 7 changer transitions 0/247 dead transitions. [2023-11-26 11:49:45,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 247 transitions, 3750 flow [2023-11-26 11:49:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:49:45,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:49:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2023-11-26 11:49:45,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363408521303258 [2023-11-26 11:49:45,724 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 214 transitions. [2023-11-26 11:49:45,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 214 transitions. [2023-11-26 11:49:45,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:45,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 214 transitions. [2023-11-26 11:49:45,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 11:49:45,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:49:45,728 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:49:45,728 INFO L175 Difference]: Start difference. First operand has 171 places, 183 transitions, 2254 flow. Second operand 7 states and 214 transitions. [2023-11-26 11:49:45,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 247 transitions, 3750 flow [2023-11-26 11:49:45,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 247 transitions, 3732 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-26 11:49:45,814 INFO L231 Difference]: Finished difference. Result has 177 places, 186 transitions, 2354 flow [2023-11-26 11:49:45,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2354, PETRI_PLACES=177, PETRI_TRANSITIONS=186} [2023-11-26 11:49:45,816 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 121 predicate places. [2023-11-26 11:49:45,817 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 186 transitions, 2354 flow [2023-11-26 11:49:45,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 11:49:45,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:45,818 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-26 11:49:45,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:46,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:49:46,024 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:46,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:46,025 INFO L85 PathProgramCache]: Analyzing trace with hash -389144400, now seen corresponding path program 1 times [2023-11-26 11:49:46,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:46,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475893982] [2023-11-26 11:49:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:46,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:46,512 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:46,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768349532] [2023-11-26 11:49:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:46,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:46,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:46,551 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:46,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:49:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 2930 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:49:51,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-26 11:49:51,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-26 11:49:52,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:52,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475893982] [2023-11-26 11:49:52,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:52,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768349532] [2023-11-26 11:49:52,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768349532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:52,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:52,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-26 11:49:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954339421] [2023-11-26 11:49:52,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:49:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:49:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:49:52,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2023-11-26 11:49:52,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 186 transitions, 2354 flow. Second operand has 14 states, 14 states have (on average 20.857142857142858) internal successors, (292), 14 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 11:49:52,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:52,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2023-11-26 11:49:52,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:54,695 INFO L124 PetriNetUnfolderBase]: 304/1159 cut-off events. [2023-11-26 11:49:54,695 INFO L125 PetriNetUnfolderBase]: For 6878/6878 co-relation queries the response was YES. [2023-11-26 11:49:54,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4110 conditions, 1159 events. 304/1159 cut-off events. For 6878/6878 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3554 event pairs, 224 based on Foata normal form. 31/1087 useless extension candidates. Maximal degree in co-relation 3198. Up to 482 conditions per place. [2023-11-26 11:49:54,707 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 103 selfloop transitions, 136 changer transitions 0/256 dead transitions. [2023-11-26 11:49:54,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 256 transitions, 3926 flow [2023-11-26 11:49:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 11:49:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-26 11:49:54,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 421 transitions. [2023-11-26 11:49:54,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38873499538319484 [2023-11-26 11:49:54,710 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 421 transitions. [2023-11-26 11:49:54,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 421 transitions. [2023-11-26 11:49:54,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:54,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 421 transitions. [2023-11-26 11:49:54,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 22.157894736842106) internal successors, (421), 19 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:54,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 57.0) internal successors, (1140), 20 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 11:49:54,715 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 57.0) internal successors, (1140), 20 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 11:49:54,715 INFO L175 Difference]: Start difference. First operand has 177 places, 186 transitions, 2354 flow. Second operand 19 states and 421 transitions. [2023-11-26 11:49:54,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 256 transitions, 3926 flow [2023-11-26 11:49:54,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 256 transitions, 3918 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:49:54,777 INFO L231 Difference]: Finished difference. Result has 194 places, 252 transitions, 3834 flow [2023-11-26 11:49:54,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3834, PETRI_PLACES=194, PETRI_TRANSITIONS=252} [2023-11-26 11:49:54,778 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 138 predicate places. [2023-11-26 11:49:54,778 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 252 transitions, 3834 flow [2023-11-26 11:49:54,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.857142857142858) internal successors, (292), 14 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 11:49:54,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:54,779 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 63, 62, 62, 62, 3, 2, 2, 2, 1, 1] [2023-11-26 11:49:54,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:55,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 11:49:55,006 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:49:55,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:55,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1022187762, now seen corresponding path program 2 times [2023-11-26 11:49:55,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:55,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143240768] [2023-11-26 11:49:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:55,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:56,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:56,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725884380] [2023-11-26 11:49:56,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:49:56,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:56,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:56,018 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:56,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ea1f17-d09d-4863-ac9b-72f904cd9f94/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process