./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:48:09,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:09,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:48:09,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:09,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:09,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:09,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:09,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:09,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:09,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:09,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:09,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:09,838 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:09,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:09,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:48:09,842 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:48:09,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:48:09,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:48:09,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:09,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:48:09,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:09,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:48:09,846 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:48:09,846 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:48:09,847 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:48:09,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:48:09,848 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:09,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:09,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:09,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:09,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:09,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:09,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:09,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:48:09,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:48:09,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:48:09,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:09,854 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:48:09,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:09,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:09,855 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:09,856 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_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 [2023-11-06 22:48:10,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:10,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:10,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:10,243 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:10,243 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:10,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-11-06 22:48:13,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:13,861 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:13,862 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-11-06 22:48:13,873 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/data/42d3095f5/b493c5faa894443faeee4275ea76f288/FLAG3cb25a1b8 [2023-11-06 22:48:13,893 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/data/42d3095f5/b493c5faa894443faeee4275ea76f288 [2023-11-06 22:48:13,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:13,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:13,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:13,900 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:13,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:13,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:13" (1/1) ... [2023-11-06 22:48:13,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174a25ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:13, skipping insertion in model container [2023-11-06 22:48:13,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:13" (1/1) ... [2023-11-06 22:48:13,947 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:14,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:14,289 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:14,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:14,382 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:48:14,383 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:48:14,391 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:14,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14 WrapperNode [2023-11-06 22:48:14,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:14,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:14,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:14,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:14,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,429 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,477 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 375 [2023-11-06 22:48:14,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:14,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:14,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:14,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:14,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:14,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:14,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:14,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:14,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (1/1) ... [2023-11-06 22:48:14,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:14,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:14,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:14,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:48:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:48:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:48:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:48:14,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:48:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:48:14,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:48:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:48:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:48:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:48:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:48:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:48:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:48:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:48:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:48:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:48:14,666 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:48:14,870 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:14,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:15,696 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:16,614 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:16,614 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:48:16,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:16 BoogieIcfgContainer [2023-11-06 22:48:16,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:16,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:16,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:16,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:16,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:13" (1/3) ... [2023-11-06 22:48:16,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afbeb8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:16, skipping insertion in model container [2023-11-06 22:48:16,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:14" (2/3) ... [2023-11-06 22:48:16,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afbeb8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:16, skipping insertion in model container [2023-11-06 22:48:16,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:16" (3/3) ... [2023-11-06 22:48:16,637 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2023-11-06 22:48:16,649 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:48:16,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:16,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-06 22:48:16,662 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:48:17,004 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:48:17,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 290 transitions, 608 flow [2023-11-06 22:48:17,264 INFO L124 PetriNetUnfolderBase]: 19/286 cut-off events. [2023-11-06 22:48:17,264 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:48:17,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 286 events. 19/286 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 294 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 237. Up to 2 conditions per place. [2023-11-06 22:48:17,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 290 transitions, 608 flow [2023-11-06 22:48:17,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 260 transitions, 541 flow [2023-11-06 22:48:17,291 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:48:17,316 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 260 transitions, 541 flow [2023-11-06 22:48:17,321 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 260 transitions, 541 flow [2023-11-06 22:48:17,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 260 transitions, 541 flow [2023-11-06 22:48:17,440 INFO L124 PetriNetUnfolderBase]: 18/260 cut-off events. [2023-11-06 22:48:17,440 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:48:17,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 260 events. 18/260 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 288 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 237. Up to 2 conditions per place. [2023-11-06 22:48:17,451 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-11-06 22:48:38,800 INFO L134 LiptonReduction]: Checked pairs total: 7592 [2023-11-06 22:48:38,801 INFO L136 LiptonReduction]: Total number of compositions: 274 [2023-11-06 22:48:38,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:38,837 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=LoopsAndPotentialCycles, 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;@19ed53ba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:38,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-06 22:48:38,842 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:48:38,842 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:48:38,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:38,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:38,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:48:38,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:48:38,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:38,850 INFO L85 PathProgramCache]: Analyzing trace with hash 48678, now seen corresponding path program 1 times [2023-11-06 22:48:38,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:38,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329396795] [2023-11-06 22:48:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:38,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329396795] [2023-11-06 22:48:39,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329396795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:39,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:39,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:48:39,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444526193] [2023-11-06 22:48:39,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:39,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:39,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:39,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:39,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:39,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 564 [2023-11-06 22:48:39,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:39,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:39,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 564 [2023-11-06 22:48:39,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:46,865 INFO L124 PetriNetUnfolderBase]: 36512/45135 cut-off events. [2023-11-06 22:48:46,865 INFO L125 PetriNetUnfolderBase]: For 591/591 co-relation queries the response was YES. [2023-11-06 22:48:47,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90879 conditions, 45135 events. 36512/45135 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240991 event pairs, 23249 based on Foata normal form. 0/11803 useless extension candidates. Maximal degree in co-relation 80279. Up to 44274 conditions per place. [2023-11-06 22:48:47,378 INFO L140 encePairwiseOnDemand]: 547/564 looper letters, 48 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-11-06 22:48:47,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 245 flow [2023-11-06 22:48:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:48:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 749 transitions. [2023-11-06 22:48:47,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426713947990544 [2023-11-06 22:48:47,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 749 transitions. [2023-11-06 22:48:47,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 749 transitions. [2023-11-06 22:48:47,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:47,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 749 transitions. [2023-11-06 22:48:47,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:47,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:47,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:47,435 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 147 flow. Second operand 3 states and 749 transitions. [2023-11-06 22:48:47,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 245 flow [2023-11-06 22:48:47,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 232 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 22:48:47,621 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 162 flow [2023-11-06 22:48:47,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-11-06 22:48:47,628 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-11-06 22:48:47,629 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 162 flow [2023-11-06 22:48:47,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:47,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:47,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:48:47,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:48:47,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:48:47,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:47,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1511041, now seen corresponding path program 1 times [2023-11-06 22:48:47,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:47,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085282379] [2023-11-06 22:48:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:47,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:47,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:47,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085282379] [2023-11-06 22:48:47,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085282379] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:47,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545789767] [2023-11-06 22:48:47,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:47,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:47,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:47,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:47,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:48:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:48,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:48:48,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:48,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:48:48,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545789767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:48,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:48:48,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 22:48:48,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582199376] [2023-11-06 22:48:48,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:48,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:48:48,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:48:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:48:48,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 564 [2023-11-06 22:48:48,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 228.75) internal successors, (915), 4 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:48,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:48,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 564 [2023-11-06 22:48:48,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:54,118 INFO L124 PetriNetUnfolderBase]: 36512/45133 cut-off events. [2023-11-06 22:48:54,119 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:54,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90250 conditions, 45133 events. 36512/45133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240778 event pairs, 23249 based on Foata normal form. 0/11805 useless extension candidates. Maximal degree in co-relation 90208. Up to 44266 conditions per place. [2023-11-06 22:48:54,533 INFO L140 encePairwiseOnDemand]: 557/564 looper letters, 45 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-11-06 22:48:54,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 256 flow [2023-11-06 22:48:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:48:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:48:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 965 transitions. [2023-11-06 22:48:54,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42774822695035464 [2023-11-06 22:48:54,546 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 965 transitions. [2023-11-06 22:48:54,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 965 transitions. [2023-11-06 22:48:54,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:54,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 965 transitions. [2023-11-06 22:48:54,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 241.25) internal successors, (965), 4 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:54,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 564.0) internal successors, (2820), 5 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:54,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 564.0) internal successors, (2820), 5 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:54,560 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 162 flow. Second operand 4 states and 965 transitions. [2023-11-06 22:48:54,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 256 flow [2023-11-06 22:48:54,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:48:54,564 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 156 flow [2023-11-06 22:48:54,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-11-06 22:48:54,566 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-11-06 22:48:54,566 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 156 flow [2023-11-06 22:48:54,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 228.75) internal successors, (915), 4 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:54,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:54,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:48:54,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:54,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:54,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:48:54,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:54,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1511040, now seen corresponding path program 1 times [2023-11-06 22:48:54,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:54,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198894633] [2023-11-06 22:48:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:54,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:54,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198894633] [2023-11-06 22:48:54,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198894633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:54,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008386417] [2023-11-06 22:48:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:54,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:54,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:54,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:54,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:48:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:55,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:48:55,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:55,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:55,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008386417] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:55,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:55,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:48:55,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337504139] [2023-11-06 22:48:55,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:55,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:48:55,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:55,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:48:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:48:55,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 564 [2023-11-06 22:48:55,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 229.14285714285714) internal successors, (1604), 7 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:55,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:55,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 564 [2023-11-06 22:48:55,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:00,411 INFO L124 PetriNetUnfolderBase]: 36518/45145 cut-off events. [2023-11-06 22:49:00,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:49:00,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90293 conditions, 45145 events. 36518/45145 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 239735 event pairs, 23249 based on Foata normal form. 0/11818 useless extension candidates. Maximal degree in co-relation 90208. Up to 44275 conditions per place. [2023-11-06 22:49:00,709 INFO L140 encePairwiseOnDemand]: 557/564 looper letters, 46 selfloop transitions, 17 changer transitions 0/69 dead transitions. [2023-11-06 22:49:00,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 342 flow [2023-11-06 22:49:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:49:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:49:00,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1437 transitions. [2023-11-06 22:49:00,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424645390070922 [2023-11-06 22:49:00,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1437 transitions. [2023-11-06 22:49:00,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1437 transitions. [2023-11-06 22:49:00,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:00,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1437 transitions. [2023-11-06 22:49:00,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:00,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:00,734 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:00,734 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 156 flow. Second operand 6 states and 1437 transitions. [2023-11-06 22:49:00,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 342 flow [2023-11-06 22:49:00,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:49:00,738 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 272 flow [2023-11-06 22:49:00,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-11-06 22:49:00,740 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-11-06 22:49:00,740 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 272 flow [2023-11-06 22:49:00,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 229.14285714285714) internal successors, (1604), 7 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:00,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:00,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:49:00,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:00,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:00,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:49:00,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:00,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2101716291, now seen corresponding path program 1 times [2023-11-06 22:49:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:00,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754738464] [2023-11-06 22:49:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:00,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:01,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:01,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754738464] [2023-11-06 22:49:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754738464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:01,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:01,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:49:01,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747415931] [2023-11-06 22:49:01,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:01,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:01,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:01,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 564 [2023-11-06 22:49:01,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:01,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:01,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 564 [2023-11-06 22:49:01,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:07,985 INFO L124 PetriNetUnfolderBase]: 44692/56615 cut-off events. [2023-11-06 22:49:07,985 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:49:08,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113967 conditions, 56615 events. 44692/56615 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5448. Compared 341513 event pairs, 12508 based on Foata normal form. 0/15775 useless extension candidates. Maximal degree in co-relation 113902. Up to 35040 conditions per place. [2023-11-06 22:49:08,341 INFO L140 encePairwiseOnDemand]: 560/564 looper letters, 98 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-11-06 22:49:08,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 106 transitions, 553 flow [2023-11-06 22:49:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:49:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-11-06 22:49:08,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710401891252955 [2023-11-06 22:49:08,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-11-06 22:49:08,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-11-06 22:49:08,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:08,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-11-06 22:49:08,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:08,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:08,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:08,364 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 272 flow. Second operand 3 states and 797 transitions. [2023-11-06 22:49:08,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 106 transitions, 553 flow [2023-11-06 22:49:08,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 106 transitions, 527 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:49:08,370 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 260 flow [2023-11-06 22:49:08,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2023-11-06 22:49:08,371 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-11-06 22:49:08,372 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 260 flow [2023-11-06 22:49:08,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:08,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:08,373 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:49:08,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:49:08,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:49:08,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:08,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2067758309, now seen corresponding path program 2 times [2023-11-06 22:49:08,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:08,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051861332] [2023-11-06 22:49:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:08,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051861332] [2023-11-06 22:49:08,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051861332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886680795] [2023-11-06 22:49:08,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:49:08,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:08,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:08,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:08,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575ade12-228d-4d7a-89a8-e9eb46ac745b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:49:08,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:49:08,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:49:08,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:49:08,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:49:08,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:08,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886680795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:08,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:08,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:49:08,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485517554] [2023-11-06 22:49:08,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:08,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:08,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:08,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:08,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:49:08,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 564 [2023-11-06 22:49:08,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:08,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:08,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 564 [2023-11-06 22:49:08,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand