./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/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_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/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_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:51:35,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:51:35,514 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:51:35,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:51:35,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:51:35,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:51:35,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:51:35,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:51:35,548 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:51:35,548 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:51:35,549 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:51:35,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:51:35,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:51:35,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:51:35,552 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:51:35,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:51:35,554 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:51:35,554 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:51:35,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:51:35,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:51:35,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:51:35,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:51:35,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:51:35,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:51:35,560 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:51:35,560 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:51:35,561 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:51:35,561 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:51:35,562 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:51:35,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:51:35,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:51:35,564 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:51:35,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:51:35,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:35,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:51:35,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:51:35,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:51:35,566 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:51:35,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:51:35,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:51:35,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:51:35,568 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:51:35,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:51:35,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:51:35,569 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_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2023-11-26 11:51:35,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:51:35,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:51:35,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:51:35,909 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:51:35,911 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:51:35,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-11-26 11:51:39,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:51:39,476 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:51:39,481 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-11-26 11:51:39,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/data/399d3eed2/46d3aa09380d45219d146c27b6ab2e0c/FLAG78d21f199 [2023-11-26 11:51:39,516 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/data/399d3eed2/46d3aa09380d45219d146c27b6ab2e0c [2023-11-26 11:51:39,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:51:39,525 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:51:39,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:39,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:51:39,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:51:39,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20526e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39, skipping insertion in model container [2023-11-26 11:51:39,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:51:40,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:40,312 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:51:40,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:40,485 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:51:40,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40 WrapperNode [2023-11-26 11:51:40,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:40,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:40,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:51:40,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:51:40,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,581 INFO L138 Inliner]: procedures = 271, calls = 50, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 236 [2023-11-26 11:51:40,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:40,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:51:40,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:51:40,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:51:40,596 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,602 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,618 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 11, 5, 2]. 55 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 6 writes are split as follows [0, 5, 0, 1]. [2023-11-26 11:51:40,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:51:40,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:51:40,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:51:40,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:51:40,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (1/1) ... [2023-11-26 11:51:40,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:40,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:40,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:51:40,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:51:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:51:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:51:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:51:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:51:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:51:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:51:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:51:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:51:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:51:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:51:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:51:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:51:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:51:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:51:40,743 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:51:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:51:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:51:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:51:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:51:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:51:40,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:51:40,746 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 11:51:40,965 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:51:40,968 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:51:41,387 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:51:41,697 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:51:41,697 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-26 11:51:41,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:41 BoogieIcfgContainer [2023-11-26 11:51:41,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:51:41,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:51:41,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:51:41,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:51:41,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:51:39" (1/3) ... [2023-11-26 11:51:41,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc748d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:41, skipping insertion in model container [2023-11-26 11:51:41,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:40" (2/3) ... [2023-11-26 11:51:41,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc748d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:41, skipping insertion in model container [2023-11-26 11:51:41,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:41" (3/3) ... [2023-11-26 11:51:41,713 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2023-11-26 11:51:41,722 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:51:41,733 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:51:41,734 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-26 11:51:41,734 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:51:41,797 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:51:41,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 111 transitions, 229 flow [2023-11-26 11:51:41,976 INFO L124 PetriNetUnfolderBase]: 35/158 cut-off events. [2023-11-26 11:51:41,976 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:51:41,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 158 events. 35/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 600 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 96. Up to 8 conditions per place. [2023-11-26 11:51:41,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 111 transitions, 229 flow [2023-11-26 11:51:42,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 110 transitions, 227 flow [2023-11-26 11:51:42,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:51:42,035 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;@186908f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:51:42,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-26 11:51:42,039 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:51:42,039 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 11:51:42,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:51:42,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:42,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:51:42,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:51:42,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:42,049 INFO L85 PathProgramCache]: Analyzing trace with hash 648496, now seen corresponding path program 1 times [2023-11-26 11:51:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241660169] [2023-11-26 11:51:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,391 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 11:51:42,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241660169] [2023-11-26 11:51:42,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241660169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:42,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:42,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:42,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505174401] [2023-11-26 11:51:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:42,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:42,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:42,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:42,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-26 11:51:42,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 11:51:42,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:42,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-26 11:51:42,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:42,908 INFO L124 PetriNetUnfolderBase]: 459/1440 cut-off events. [2023-11-26 11:51:42,909 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:51:42,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 1440 events. 459/1440 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9635 event pairs, 414 based on Foata normal form. 275/1544 useless extension candidates. Maximal degree in co-relation 2273. Up to 919 conditions per place. [2023-11-26 11:51:42,928 INFO L140 encePairwiseOnDemand]: 85/111 looper letters, 49 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-11-26 11:51:42,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 295 flow [2023-11-26 11:51:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:42,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2023-11-26 11:51:42,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292792792792793 [2023-11-26 11:51:42,950 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 235 transitions. [2023-11-26 11:51:42,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 235 transitions. [2023-11-26 11:51:42,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:42,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 235 transitions. [2023-11-26 11:51:42,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 11:51:42,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states 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 11:51:42,970 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states 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 11:51:42,972 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 227 flow. Second operand 4 states and 235 transitions. [2023-11-26 11:51:42,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 295 flow [2023-11-26 11:51:42,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:51:42,982 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 211 flow [2023-11-26 11:51:42,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2023-11-26 11:51:42,988 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2023-11-26 11:51:42,989 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 211 flow [2023-11-26 11:51:42,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 11:51:42,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:42,990 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:51:42,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:51:42,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:51:42,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:42,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2140125570, now seen corresponding path program 1 times [2023-11-26 11:51:42,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744303367] [2023-11-26 11:51:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:42,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:43,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:43,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744303367] [2023-11-26 11:51:43,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744303367] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805746277] [2023-11-26 11:51:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:43,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:43,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:43,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:43,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:51:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:51:43,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:43,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:43,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805746277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:43,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:43,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:51:43,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405555675] [2023-11-26 11:51:43,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:43,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:51:43,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:43,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:51:43,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:43,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-26 11:51:43,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 11:51:43,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:43,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-26 11:51:43,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:43,868 INFO L124 PetriNetUnfolderBase]: 459/1439 cut-off events. [2023-11-26 11:51:43,868 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:51:43,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2376 conditions, 1439 events. 459/1439 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9630 event pairs, 414 based on Foata normal form. 1/1269 useless extension candidates. Maximal degree in co-relation 2358. Up to 914 conditions per place. [2023-11-26 11:51:43,881 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 45 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-26 11:51:43,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 309 flow [2023-11-26 11:51:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:51:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:51:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 292 transitions. [2023-11-26 11:51:43,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2023-11-26 11:51:43,889 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 292 transitions. [2023-11-26 11:51:43,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 292 transitions. [2023-11-26 11:51:43,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:43,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 292 transitions. [2023-11-26 11:51:43,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 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 11:51:43,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states 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 11:51:43,907 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states 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 11:51:43,907 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 211 flow. Second operand 6 states and 292 transitions. [2023-11-26 11:51:43,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 309 flow [2023-11-26 11:51:43,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:51:43,913 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 217 flow [2023-11-26 11:51:43,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-11-26 11:51:43,915 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2023-11-26 11:51:43,915 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 217 flow [2023-11-26 11:51:43,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 11:51:43,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:43,916 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:51:43,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:44,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:44,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:51:44,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:44,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1919383886, now seen corresponding path program 1 times [2023-11-26 11:51:44,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:44,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185111983] [2023-11-26 11:51:44,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:44,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:51:44,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:44,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185111983] [2023-11-26 11:51:44,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185111983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:44,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:44,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:44,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148716244] [2023-11-26 11:51:44,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:44,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:44,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:44,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:44,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:44,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-26 11:51:44,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 11:51:44,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:44,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-26 11:51:44,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:44,482 INFO L124 PetriNetUnfolderBase]: 459/1438 cut-off events. [2023-11-26 11:51:44,482 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 11:51:44,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 1438 events. 459/1438 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9649 event pairs, 414 based on Foata normal form. 1/1269 useless extension candidates. Maximal degree in co-relation 2354. Up to 917 conditions per place. [2023-11-26 11:51:44,493 INFO L140 encePairwiseOnDemand]: 108/111 looper letters, 46 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2023-11-26 11:51:44,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 313 flow [2023-11-26 11:51:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-11-26 11:51:44,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2023-11-26 11:51:44,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-11-26 11:51:44,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-11-26 11:51:44,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:44,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-11-26 11:51:44,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 11:51:44,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 11:51:44,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 11:51:44,499 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 217 flow. Second operand 3 states and 169 transitions. [2023-11-26 11:51:44,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 313 flow [2023-11-26 11:51:44,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 291 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-26 11:51:44,503 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 199 flow [2023-11-26 11:51:44,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2023-11-26 11:51:44,504 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 3 predicate places. [2023-11-26 11:51:44,504 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 199 flow [2023-11-26 11:51:44,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 11:51:44,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:44,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:44,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:51:44,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:51:44,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:44,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1989566528, now seen corresponding path program 1 times [2023-11-26 11:51:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:44,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199983027] [2023-11-26 11:51:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:44,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:44,635 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 11:51:44,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:44,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199983027] [2023-11-26 11:51:44,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199983027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:44,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562396301] [2023-11-26 11:51:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:44,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:44,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:44,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:44,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:51:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:44,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:51:44,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:44,776 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 11:51:44,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:44,815 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 11:51:44,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562396301] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:44,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:44,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 11:51:44,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253384155] [2023-11-26 11:51:44,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:44,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:51:44,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:44,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:51:44,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:51:44,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-26 11:51:44,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 199 flow. Second operand has 10 states, 10 states have (on average 41.4) internal successors, (414), 10 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 11:51:44,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:44,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-26 11:51:44,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:45,242 INFO L124 PetriNetUnfolderBase]: 459/1442 cut-off events. [2023-11-26 11:51:45,242 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-26 11:51:45,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 1442 events. 459/1442 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9599 event pairs, 414 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 2347. Up to 915 conditions per place. [2023-11-26 11:51:45,254 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 46 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2023-11-26 11:51:45,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 320 flow [2023-11-26 11:51:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:51:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:51:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 335 transitions. [2023-11-26 11:51:45,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43114543114543114 [2023-11-26 11:51:45,258 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 335 transitions. [2023-11-26 11:51:45,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 335 transitions. [2023-11-26 11:51:45,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:45,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 335 transitions. [2023-11-26 11:51:45,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 47.857142857142854) internal successors, (335), 7 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 11:51:45,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 11:51:45,267 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 11:51:45,268 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 199 flow. Second operand 7 states and 335 transitions. [2023-11-26 11:51:45,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 320 flow [2023-11-26 11:51:45,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:45,272 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 225 flow [2023-11-26 11:51:45,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2023-11-26 11:51:45,275 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2023-11-26 11:51:45,275 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 225 flow [2023-11-26 11:51:45,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 41.4) internal successors, (414), 10 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 11:51:45,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:45,277 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:45,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:45,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:45,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:51:45,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:45,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1350244096, now seen corresponding path program 2 times [2023-11-26 11:51:45,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:45,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927190504] [2023-11-26 11:51:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:45,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:51:45,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:45,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927190504] [2023-11-26 11:51:45,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927190504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:45,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:45,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:45,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701079224] [2023-11-26 11:51:45,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:45,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:45,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:45,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:45,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:45,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-26 11:51:45,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 11:51:45,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:45,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-26 11:51:45,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:45,895 INFO L124 PetriNetUnfolderBase]: 435/1246 cut-off events. [2023-11-26 11:51:45,895 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 11:51:45,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 1246 events. 435/1246 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8180 event pairs, 0 based on Foata normal form. 19/1143 useless extension candidates. Maximal degree in co-relation 2114. Up to 825 conditions per place. [2023-11-26 11:51:45,906 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 87 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2023-11-26 11:51:45,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 128 transitions, 475 flow [2023-11-26 11:51:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-11-26 11:51:45,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585585585585585 [2023-11-26 11:51:45,908 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 248 transitions. [2023-11-26 11:51:45,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 248 transitions. [2023-11-26 11:51:45,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:45,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 248 transitions. [2023-11-26 11:51:45,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 11:51:45,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states 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 11:51:45,924 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states 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 11:51:45,924 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 225 flow. Second operand 4 states and 248 transitions. [2023-11-26 11:51:45,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 128 transitions, 475 flow [2023-11-26 11:51:45,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 128 transitions, 471 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:45,938 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 227 flow [2023-11-26 11:51:45,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2023-11-26 11:51:45,941 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2023-11-26 11:51:45,941 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 227 flow [2023-11-26 11:51:45,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 11:51:45,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:45,946 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:45,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:51:45,946 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:51:45,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:45,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1541132979, now seen corresponding path program 1 times [2023-11-26 11:51:45,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:45,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100805399] [2023-11-26 11:51:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:45,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:51:46,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:46,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100805399] [2023-11-26 11:51:46,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100805399] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:46,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472347790] [2023-11-26 11:51:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:46,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:46,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:46,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:46,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:51:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:51:46,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:46,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:51:46,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:51:46,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472347790] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:46,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:46,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-26 11:51:46,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712258819] [2023-11-26 11:51:46,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:46,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:51:46,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:46,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:51:46,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:51:46,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-26 11:51:46,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 227 flow. Second operand has 18 states, 18 states have (on average 41.27777777777778) internal successors, (743), 18 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 11:51:46,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:46,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-26 11:51:46,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:46,912 INFO L124 PetriNetUnfolderBase]: 458/1391 cut-off events. [2023-11-26 11:51:46,912 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-26 11:51:46,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2420 conditions, 1391 events. 458/1391 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9011 event pairs, 414 based on Foata normal form. 4/1256 useless extension candidates. Maximal degree in co-relation 2345. Up to 897 conditions per place. [2023-11-26 11:51:46,925 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 46 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2023-11-26 11:51:46,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 397 flow [2023-11-26 11:51:46,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:51:46,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:51:46,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 665 transitions. [2023-11-26 11:51:46,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993993993993994 [2023-11-26 11:51:46,930 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 665 transitions. [2023-11-26 11:51:46,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 665 transitions. [2023-11-26 11:51:46,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:46,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 665 transitions. [2023-11-26 11:51:46,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 44.333333333333336) internal successors, (665), 15 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 11:51:46,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 111.0) internal successors, (1776), 16 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 11:51:46,938 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 111.0) internal successors, (1776), 16 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 11:51:46,938 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 227 flow. Second operand 15 states and 665 transitions. [2023-11-26 11:51:46,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 397 flow [2023-11-26 11:51:46,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 99 transitions, 391 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:51:46,943 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 318 flow [2023-11-26 11:51:46,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=318, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2023-11-26 11:51:46,964 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 24 predicate places. [2023-11-26 11:51:46,965 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 318 flow [2023-11-26 11:51:46,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 41.27777777777778) internal successors, (743), 18 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 11:51:46,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:46,966 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:46,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:47,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:47,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:51:47,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1694498867, now seen corresponding path program 2 times [2023-11-26 11:51:47,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:47,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697873767] [2023-11-26 11:51:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:47,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:51:47,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:47,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697873767] [2023-11-26 11:51:47,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697873767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:47,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842052639] [2023-11-26 11:51:47,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:51:47,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:47,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:47,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:47,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:51:47,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:51:47,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:47,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:51:47,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:51:47,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:51:47,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842052639] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:47,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:47,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-26 11:51:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826061166] [2023-11-26 11:51:47,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:47,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:51:47,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:47,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:51:47,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:51:47,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-26 11:51:47,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 318 flow. Second operand has 23 states, 23 states have (on average 41.26086956521739) internal successors, (949), 23 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 11:51:47,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:47,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-26 11:51:47,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:48,480 INFO L124 PetriNetUnfolderBase]: 458/1400 cut-off events. [2023-11-26 11:51:48,480 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-11-26 11:51:48,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2445 conditions, 1400 events. 458/1400 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9020 event pairs, 414 based on Foata normal form. 3/1264 useless extension candidates. Maximal degree in co-relation 2310. Up to 897 conditions per place. [2023-11-26 11:51:48,491 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 46 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2023-11-26 11:51:48,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 105 transitions, 506 flow [2023-11-26 11:51:48,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:51:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 11:51:48,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 910 transitions. [2023-11-26 11:51:48,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39039039039039036 [2023-11-26 11:51:48,496 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 910 transitions. [2023-11-26 11:51:48,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 910 transitions. [2023-11-26 11:51:48,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:48,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 910 transitions. [2023-11-26 11:51:48,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 43.333333333333336) internal successors, (910), 21 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 11:51:48,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 111.0) internal successors, (2442), 22 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states 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 11:51:48,506 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 111.0) internal successors, (2442), 22 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states 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 11:51:48,507 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 318 flow. Second operand 21 states and 910 transitions. [2023-11-26 11:51:48,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 105 transitions, 506 flow [2023-11-26 11:51:48,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 105 transitions, 496 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 11:51:48,512 INFO L231 Difference]: Finished difference. Result has 133 places, 105 transitions, 419 flow [2023-11-26 11:51:48,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=419, PETRI_PLACES=133, PETRI_TRANSITIONS=105} [2023-11-26 11:51:48,513 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 43 predicate places. [2023-11-26 11:51:48,513 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 105 transitions, 419 flow [2023-11-26 11:51:48,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 41.26086956521739) internal successors, (949), 23 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 11:51:48,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:48,515 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:48,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:48,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:48,721 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 11:51:48,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:48,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1236893957, now seen corresponding path program 3 times [2023-11-26 11:51:48,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:48,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766186131] [2023-11-26 11:51:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:48,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:51:48,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:51:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:51:48,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:51:48,800 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:51:48,801 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-26 11:51:48,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-26 11:51:48,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-26 11:51:48,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-26 11:51:48,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-26 11:51:48,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-26 11:51:48,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-26 11:51:48,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-26 11:51:48,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-26 11:51:48,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-26 11:51:48,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-26 11:51:48,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-26 11:51:48,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-26 11:51:48,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-26 11:51:48,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-26 11:51:48,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-26 11:51:48,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-26 11:51:48,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-26 11:51:48,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-26 11:51:48,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:51:48,807 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2023-11-26 11:51:48,810 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:51:48,810 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:51:48,848 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:51:48,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 157 transitions, 330 flow [2023-11-26 11:51:48,880 INFO L124 PetriNetUnfolderBase]: 59/270 cut-off events. [2023-11-26 11:51:48,881 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:51:48,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 270 events. 59/270 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1213 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 160. Up to 12 conditions per place. [2023-11-26 11:51:48,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 157 transitions, 330 flow [2023-11-26 11:51:48,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 157 transitions, 330 flow [2023-11-26 11:51:48,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:51:48,892 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;@186908f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:51:48,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-26 11:51:48,894 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:51:48,895 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 11:51:48,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:51:48,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:48,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:51:48,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:51:48,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:48,896 INFO L85 PathProgramCache]: Analyzing trace with hash 804397, now seen corresponding path program 1 times [2023-11-26 11:51:48,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:48,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381137233] [2023-11-26 11:51:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:48,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:48,926 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 11:51:48,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:48,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381137233] [2023-11-26 11:51:48,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381137233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:48,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:48,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:48,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644760770] [2023-11-26 11:51:48,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:48,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:48,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:48,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:48,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:48,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-26 11:51:48,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 157 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 11:51:48,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:48,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-26 11:51:48,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:53,875 INFO L124 PetriNetUnfolderBase]: 17960/38372 cut-off events. [2023-11-26 11:51:53,876 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-26 11:51:53,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65298 conditions, 38372 events. 17960/38372 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 390444 event pairs, 16614 based on Foata normal form. 8450/42658 useless extension candidates. Maximal degree in co-relation 53072. Up to 26822 conditions per place. [2023-11-26 11:51:54,178 INFO L140 encePairwiseOnDemand]: 121/157 looper letters, 70 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-11-26 11:51:54,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 420 flow [2023-11-26 11:51:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2023-11-26 11:51:54,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254777070063694 [2023-11-26 11:51:54,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 330 transitions. [2023-11-26 11:51:54,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 330 transitions. [2023-11-26 11:51:54,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:54,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 330 transitions. [2023-11-26 11:51:54,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 11:51:54,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 11:51:54,186 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 11:51:54,187 INFO L175 Difference]: Start difference. First operand has 126 places, 157 transitions, 330 flow. Second operand 4 states and 330 transitions. [2023-11-26 11:51:54,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 129 transitions, 420 flow [2023-11-26 11:51:54,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:51:54,192 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 294 flow [2023-11-26 11:51:54,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2023-11-26 11:51:54,196 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 5 predicate places. [2023-11-26 11:51:54,196 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 294 flow [2023-11-26 11:51:54,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 11:51:54,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:54,197 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:51:54,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:51:54,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:51:54,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1805206430, now seen corresponding path program 1 times [2023-11-26 11:51:54,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:54,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536716072] [2023-11-26 11:51:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:54,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:54,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536716072] [2023-11-26 11:51:54,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536716072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881727563] [2023-11-26 11:51:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:54,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:54,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:54,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:54,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:51:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:51:54,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:54,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:54,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881727563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:54,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:54,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:51:54,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661879491] [2023-11-26 11:51:54,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:54,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:51:54,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:54,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:51:54,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:54,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-26 11:51:54,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 56.833333333333336) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 11:51:54,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:54,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-26 11:51:54,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:58,306 INFO L124 PetriNetUnfolderBase]: 17960/38371 cut-off events. [2023-11-26 11:51:58,306 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-26 11:51:58,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65308 conditions, 38371 events. 17960/38371 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 390325 event pairs, 16614 based on Foata normal form. 1/34208 useless extension candidates. Maximal degree in co-relation 65289. Up to 26817 conditions per place. [2023-11-26 11:51:58,684 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 66 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2023-11-26 11:51:58,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 434 flow [2023-11-26 11:51:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:51:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:51:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 409 transitions. [2023-11-26 11:51:58,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43418259023354566 [2023-11-26 11:51:58,687 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 409 transitions. [2023-11-26 11:51:58,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 409 transitions. [2023-11-26 11:51:58,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:58,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 409 transitions. [2023-11-26 11:51:58,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 11:51:58,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states 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 11:51:58,692 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states 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 11:51:58,692 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 294 flow. Second operand 6 states and 409 transitions. [2023-11-26 11:51:58,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 434 flow [2023-11-26 11:51:58,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:51:58,697 INFO L231 Difference]: Finished difference. Result has 134 places, 128 transitions, 300 flow [2023-11-26 11:51:58,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=134, PETRI_TRANSITIONS=128} [2023-11-26 11:51:58,699 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 8 predicate places. [2023-11-26 11:51:58,700 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 128 transitions, 300 flow [2023-11-26 11:51:58,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.833333333333336) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 11:51:58,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:58,701 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:51:58,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:58,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:51:58,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:51:58,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash -126823669, now seen corresponding path program 1 times [2023-11-26 11:51:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:58,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453835394] [2023-11-26 11:51:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:58,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:51:58,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:58,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453835394] [2023-11-26 11:51:58,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453835394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:58,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:58,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98565696] [2023-11-26 11:51:58,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:58,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:58,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:58,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:58,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:58,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-26 11:51:58,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 128 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 11:51:58,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:58,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-26 11:51:58,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:02,640 INFO L124 PetriNetUnfolderBase]: 17960/38370 cut-off events. [2023-11-26 11:52:02,640 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-26 11:52:02,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65310 conditions, 38370 events. 17960/38370 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 390531 event pairs, 16614 based on Foata normal form. 1/34208 useless extension candidates. Maximal degree in co-relation 65285. Up to 26820 conditions per place. [2023-11-26 11:52:02,928 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 67 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2023-11-26 11:52:02,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 127 transitions, 438 flow [2023-11-26 11:52:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:52:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-26 11:52:02,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505307855626327 [2023-11-26 11:52:02,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-26 11:52:02,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-26 11:52:02,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:02,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-26 11:52:02,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 11:52:02,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 11:52:02,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 11:52:02,938 INFO L175 Difference]: Start difference. First operand has 134 places, 128 transitions, 300 flow. Second operand 3 states and 238 transitions. [2023-11-26 11:52:02,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 127 transitions, 438 flow [2023-11-26 11:52:02,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 416 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-26 11:52:02,943 INFO L231 Difference]: Finished difference. Result has 129 places, 127 transitions, 282 flow [2023-11-26 11:52:02,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=129, PETRI_TRANSITIONS=127} [2023-11-26 11:52:02,945 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 3 predicate places. [2023-11-26 11:52:02,948 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 127 transitions, 282 flow [2023-11-26 11:52:02,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 11:52:02,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:02,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:02,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:52:02,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:52:02,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:02,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1615792247, now seen corresponding path program 1 times [2023-11-26 11:52:02,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:02,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639330173] [2023-11-26 11:52:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:02,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:03,017 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 11:52:03,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:03,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639330173] [2023-11-26 11:52:03,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639330173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:03,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000203480] [2023-11-26 11:52:03,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:03,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:03,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:03,020 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:03,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:52:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:03,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:03,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:03,166 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 11:52:03,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:03,198 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 11:52:03,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000203480] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:03,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:03,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 11:52:03,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258008598] [2023-11-26 11:52:03,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:03,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:03,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:03,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-26 11:52:03,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 127 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 57.4) internal successors, (574), 10 states have internal predecessors, (574), 0 states have call successors, (0), 0 states 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 11:52:03,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:03,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-26 11:52:03,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:07,129 INFO L124 PetriNetUnfolderBase]: 17960/38374 cut-off events. [2023-11-26 11:52:07,129 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-26 11:52:07,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65313 conditions, 38374 events. 17960/38374 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 390447 event pairs, 16614 based on Foata normal form. 2/34214 useless extension candidates. Maximal degree in co-relation 65278. Up to 26818 conditions per place. [2023-11-26 11:52:07,320 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 67 selfloop transitions, 7 changer transitions 0/130 dead transitions. [2023-11-26 11:52:07,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 445 flow [2023-11-26 11:52:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:52:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 468 transitions. [2023-11-26 11:52:07,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42584167424931757 [2023-11-26 11:52:07,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 468 transitions. [2023-11-26 11:52:07,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 468 transitions. [2023-11-26 11:52:07,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:07,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 468 transitions. [2023-11-26 11:52:07,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 11:52:07,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states 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 11:52:07,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states 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 11:52:07,331 INFO L175 Difference]: Start difference. First operand has 129 places, 127 transitions, 282 flow. Second operand 7 states and 468 transitions. [2023-11-26 11:52:07,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 445 flow [2023-11-26 11:52:07,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 431 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:07,335 INFO L231 Difference]: Finished difference. Result has 135 places, 130 transitions, 308 flow [2023-11-26 11:52:07,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=135, PETRI_TRANSITIONS=130} [2023-11-26 11:52:07,336 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 9 predicate places. [2023-11-26 11:52:07,337 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 130 transitions, 308 flow [2023-11-26 11:52:07,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.4) internal successors, (574), 10 states have internal predecessors, (574), 0 states have call successors, (0), 0 states 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 11:52:07,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:07,337 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:07,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:52:07,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:52:07,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash 969140073, now seen corresponding path program 2 times [2023-11-26 11:52:07,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:07,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944107466] [2023-11-26 11:52:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:52:07,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944107466] [2023-11-26 11:52:07,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944107466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:07,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:07,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:07,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314212874] [2023-11-26 11:52:07,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:07,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:07,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:07,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:07,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-26 11:52:07,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 130 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 11:52:07,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:07,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-26 11:52:07,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:11,308 INFO L124 PetriNetUnfolderBase]: 19402/41352 cut-off events. [2023-11-26 11:52:11,308 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-11-26 11:52:11,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70458 conditions, 41352 events. 19402/41352 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 426464 event pairs, 11742 based on Foata normal form. 19/36811 useless extension candidates. Maximal degree in co-relation 70418. Up to 28927 conditions per place. [2023-11-26 11:52:11,659 INFO L140 encePairwiseOnDemand]: 151/157 looper letters, 112 selfloop transitions, 3 changer transitions 0/169 dead transitions. [2023-11-26 11:52:11,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 169 transitions, 616 flow [2023-11-26 11:52:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:11,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:52:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2023-11-26 11:52:11,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366242038216561 [2023-11-26 11:52:11,664 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 337 transitions. [2023-11-26 11:52:11,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 337 transitions. [2023-11-26 11:52:11,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:11,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 337 transitions. [2023-11-26 11:52:11,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 11:52:11,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 11:52:11,671 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 11:52:11,671 INFO L175 Difference]: Start difference. First operand has 135 places, 130 transitions, 308 flow. Second operand 4 states and 337 transitions. [2023-11-26 11:52:11,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 169 transitions, 616 flow [2023-11-26 11:52:11,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 169 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:11,683 INFO L231 Difference]: Finished difference. Result has 138 places, 132 transitions, 328 flow [2023-11-26 11:52:11,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=138, PETRI_TRANSITIONS=132} [2023-11-26 11:52:11,685 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 12 predicate places. [2023-11-26 11:52:11,686 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 132 transitions, 328 flow [2023-11-26 11:52:11,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 11:52:11,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:11,686 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:11,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:52:11,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:52:11,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2074295790, now seen corresponding path program 1 times [2023-11-26 11:52:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:11,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891611215] [2023-11-26 11:52:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:52:11,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:11,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891611215] [2023-11-26 11:52:11,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891611215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957252462] [2023-11-26 11:52:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:11,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:11,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:11,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:11,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:52:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:11,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:12,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:52:12,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:52:12,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957252462] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:12,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:12,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-26 11:52:12,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143793363] [2023-11-26 11:52:12,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:12,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:52:12,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:12,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:52:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:52:12,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-26 11:52:12,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 132 transitions, 328 flow. Second operand has 18 states, 18 states have (on average 57.333333333333336) internal successors, (1032), 18 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 11:52:12,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:12,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-26 11:52:12,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:16,292 INFO L124 PetriNetUnfolderBase]: 17958/38482 cut-off events. [2023-11-26 11:52:16,292 INFO L125 PetriNetUnfolderBase]: For 1315/2006 co-relation queries the response was YES. [2023-11-26 11:52:16,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66640 conditions, 38482 events. 17958/38482 cut-off events. For 1315/2006 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 391796 event pairs, 16614 based on Foata normal form. 4/34678 useless extension candidates. Maximal degree in co-relation 66563. Up to 26812 conditions per place. [2023-11-26 11:52:16,485 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 69 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2023-11-26 11:52:16,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 140 transitions, 544 flow [2023-11-26 11:52:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:52:16,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:52:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 926 transitions. [2023-11-26 11:52:16,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932059447983015 [2023-11-26 11:52:16,490 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 926 transitions. [2023-11-26 11:52:16,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 926 transitions. [2023-11-26 11:52:16,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:16,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 926 transitions. [2023-11-26 11:52:16,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 61.733333333333334) internal successors, (926), 15 states have internal predecessors, (926), 0 states have call successors, (0), 0 states 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 11:52:16,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states 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 11:52:16,501 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states 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 11:52:16,501 INFO L175 Difference]: Start difference. First operand has 138 places, 132 transitions, 328 flow. Second operand 15 states and 926 transitions. [2023-11-26 11:52:16,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 140 transitions, 544 flow [2023-11-26 11:52:16,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 140 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:52:16,513 INFO L231 Difference]: Finished difference. Result has 155 places, 140 transitions, 423 flow [2023-11-26 11:52:16,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=423, PETRI_PLACES=155, PETRI_TRANSITIONS=140} [2023-11-26 11:52:16,515 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 29 predicate places. [2023-11-26 11:52:16,515 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 140 transitions, 423 flow [2023-11-26 11:52:16,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 57.333333333333336) internal successors, (1032), 18 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 11:52:16,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:16,517 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:16,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:16,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:16,723 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:52:16,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1793823186, now seen corresponding path program 2 times [2023-11-26 11:52:16,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:16,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85284547] [2023-11-26 11:52:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:16,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:52:17,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:17,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85284547] [2023-11-26 11:52:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85284547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659602703] [2023-11-26 11:52:17,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:52:17,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:17,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:17,112 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:17,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:52:17,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:52:17,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:52:17,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:52:17,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:52:17,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:52:17,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659602703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:17,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:17,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-26 11:52:17,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758900354] [2023-11-26 11:52:17,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:17,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:52:17,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:52:17,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:52:17,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-26 11:52:17,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 140 transitions, 423 flow. Second operand has 23 states, 23 states have (on average 57.30434782608695) internal successors, (1318), 23 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states 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 11:52:17,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:17,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-26 11:52:17,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:22,254 INFO L124 PetriNetUnfolderBase]: 17958/38491 cut-off events. [2023-11-26 11:52:22,255 INFO L125 PetriNetUnfolderBase]: For 1396/2087 co-relation queries the response was YES. [2023-11-26 11:52:22,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66685 conditions, 38491 events. 17958/38491 cut-off events. For 1396/2087 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 391826 event pairs, 16614 based on Foata normal form. 3/34686 useless extension candidates. Maximal degree in co-relation 66548. Up to 26812 conditions per place. [2023-11-26 11:52:22,468 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 69 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2023-11-26 11:52:22,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 146 transitions, 657 flow [2023-11-26 11:52:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:52:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 11:52:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1267 transitions. [2023-11-26 11:52:22,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842887473460722 [2023-11-26 11:52:22,476 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1267 transitions. [2023-11-26 11:52:22,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1267 transitions. [2023-11-26 11:52:22,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:22,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1267 transitions. [2023-11-26 11:52:22,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 60.333333333333336) internal successors, (1267), 21 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states 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 11:52:22,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 157.0) internal successors, (3454), 22 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states 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 11:52:22,492 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 157.0) internal successors, (3454), 22 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states 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 11:52:22,492 INFO L175 Difference]: Start difference. First operand has 155 places, 140 transitions, 423 flow. Second operand 21 states and 1267 transitions. [2023-11-26 11:52:22,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 146 transitions, 657 flow [2023-11-26 11:52:22,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 146 transitions, 647 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 11:52:22,501 INFO L231 Difference]: Finished difference. Result has 174 places, 146 transitions, 524 flow [2023-11-26 11:52:22,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=524, PETRI_PLACES=174, PETRI_TRANSITIONS=146} [2023-11-26 11:52:22,502 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 48 predicate places. [2023-11-26 11:52:22,502 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 146 transitions, 524 flow [2023-11-26 11:52:22,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 57.30434782608695) internal successors, (1318), 23 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states 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 11:52:22,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:22,503 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:22,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:22,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 11:52:22,708 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:52:22,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:22,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1359341575, now seen corresponding path program 3 times [2023-11-26 11:52:22,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:22,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765411974] [2023-11-26 11:52:22,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:22,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:52:22,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:22,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765411974] [2023-11-26 11:52:22,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765411974] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:22,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44027249] [2023-11-26 11:52:22,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:52:22,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:22,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:22,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:22,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:52:23,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:52:23,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:52:23,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:23,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:52:23,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:23,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44027249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:23,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:23,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-26 11:52:23,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414083473] [2023-11-26 11:52:23,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:23,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:52:23,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:23,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:52:23,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:23,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 157 [2023-11-26 11:52:23,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 146 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 11:52:23,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:23,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 157 [2023-11-26 11:52:23,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:27,330 INFO L124 PetriNetUnfolderBase]: 19009/36812 cut-off events. [2023-11-26 11:52:27,330 INFO L125 PetriNetUnfolderBase]: For 1424/1424 co-relation queries the response was YES. [2023-11-26 11:52:27,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67139 conditions, 36812 events. 19009/36812 cut-off events. For 1424/1424 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 351616 event pairs, 1897 based on Foata normal form. 361/33723 useless extension candidates. Maximal degree in co-relation 66978. Up to 22334 conditions per place. [2023-11-26 11:52:27,533 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 158 selfloop transitions, 6 changer transitions 0/217 dead transitions. [2023-11-26 11:52:27,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 217 transitions, 992 flow [2023-11-26 11:52:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:52:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 364 transitions. [2023-11-26 11:52:27,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5796178343949044 [2023-11-26 11:52:27,536 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 364 transitions. [2023-11-26 11:52:27,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 364 transitions. [2023-11-26 11:52:27,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:27,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 364 transitions. [2023-11-26 11:52:27,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 11:52:27,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 11:52:27,542 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 11:52:27,543 INFO L175 Difference]: Start difference. First operand has 174 places, 146 transitions, 524 flow. Second operand 4 states and 364 transitions. [2023-11-26 11:52:27,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 217 transitions, 992 flow [2023-11-26 11:52:27,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 217 transitions, 949 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-11-26 11:52:27,556 INFO L231 Difference]: Finished difference. Result has 163 places, 145 transitions, 489 flow [2023-11-26 11:52:27,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=489, PETRI_PLACES=163, PETRI_TRANSITIONS=145} [2023-11-26 11:52:27,557 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 37 predicate places. [2023-11-26 11:52:27,557 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 145 transitions, 489 flow [2023-11-26 11:52:27,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 11:52:27,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:27,557 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:27,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:27,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1a8bb9-f5ba-4b28-b30b-01b52277c020/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:52:27,763 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:52:27,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash 810084994, now seen corresponding path program 1 times [2023-11-26 11:52:27,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:27,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942048982] [2023-11-26 11:52:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:27,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 11:52:27,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:27,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942048982] [2023-11-26 11:52:27,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942048982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:27,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:27,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786602297] [2023-11-26 11:52:27,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:27,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:27,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:27,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:27,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:27,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-26 11:52:27,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 11:52:27,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:27,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-26 11:52:27,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand