./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:43:01,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:43:01,673 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:43:01,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:43:01,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:43:01,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:43:01,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:43:01,708 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:43:01,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:43:01,710 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:43:01,710 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:43:01,711 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:43:01,712 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:43:01,712 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:43:01,713 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:43:01,713 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:43:01,714 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:43:01,714 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:43:01,715 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:43:01,715 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:43:01,716 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:43:01,717 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:43:01,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:43:01,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:43:01,718 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:43:01,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:43:01,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:43:01,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:43:01,720 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:43:01,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:43:01,721 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:43:01,722 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:43:01,722 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:43:01,723 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:43:01,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:43:01,724 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:43:01,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:43:01,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:43:01,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:01,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:43:01,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:43:01,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:43:01,727 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:43:01,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:43:01,727 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:43:01,727 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:43:01,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:43:01,728 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 [2023-11-12 00:43:02,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:43:02,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:43:02,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:43:02,048 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:43:02,049 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:43:02,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2023-11-12 00:43:05,260 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:43:05,458 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:43:05,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2023-11-12 00:43:05,467 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/data/adefb9e58/8cd891936d604b749b680857159ca641/FLAGf9ffd2448 [2023-11-12 00:43:05,481 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/data/adefb9e58/8cd891936d604b749b680857159ca641 [2023-11-12 00:43:05,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:43:05,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:43:05,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:05,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:43:05,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:43:05,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227bb0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05, skipping insertion in model container [2023-11-12 00:43:05,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,521 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:43:05,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:05,710 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:43:05,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:05,747 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:05,747 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:05,754 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:43:05,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05 WrapperNode [2023-11-12 00:43:05,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:05,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:05,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:43:05,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:43:05,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,802 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 133 [2023-11-12 00:43:05,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:05,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:43:05,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:43:05,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:43:05,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,835 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:43:05,847 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:43:05,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:43:05,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:43:05,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (1/1) ... [2023-11-12 00:43:05,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:05,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:05,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:43:05,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:43:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:43:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:43:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:43:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:43:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:43:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:43:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:43:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:43:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 00:43:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 00:43:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:43:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:43:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:43:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:43:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:43:05,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:43:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:43:05,945 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:43:06,117 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:43:06,119 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:43:06,594 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:43:06,674 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:43:06,675 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 00:43:06,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:06 BoogieIcfgContainer [2023-11-12 00:43:06,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:43:06,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:43:06,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:43:06,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:43:06,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:43:05" (1/3) ... [2023-11-12 00:43:06,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f46ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:06, skipping insertion in model container [2023-11-12 00:43:06,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:05" (2/3) ... [2023-11-12 00:43:06,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f46ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:06, skipping insertion in model container [2023-11-12 00:43:06,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:06" (3/3) ... [2023-11-12 00:43:06,689 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-11-12 00:43:06,704 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:43:06,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:43:06,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 00:43:06,719 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:43:06,829 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 00:43:06,868 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:43:06,892 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 199 transitions, 419 flow [2023-11-12 00:43:06,895 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 199 transitions, 419 flow [2023-11-12 00:43:06,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 199 transitions, 419 flow [2023-11-12 00:43:07,009 INFO L124 PetriNetUnfolderBase]: 12/196 cut-off events. [2023-11-12 00:43:07,009 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 00:43:07,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 196 events. 12/196 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 168 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 162. Up to 2 conditions per place. [2023-11-12 00:43:07,020 INFO L119 LiptonReduction]: Number of co-enabled transitions 1980 [2023-11-12 00:43:15,550 INFO L134 LiptonReduction]: Checked pairs total: 3092 [2023-11-12 00:43:15,550 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-11-12 00:43:15,558 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 87 flow [2023-11-12 00:43:15,607 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 249 states, 238 states have (on average 3.004201680672269) internal successors, (715), 248 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:15,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:43:15,633 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=FINITE_AUTOMATA, 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;@690dd5b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:43:15,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 00:43:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 238 states have (on average 3.004201680672269) internal successors, (715), 248 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:43:15,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:15,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:43:15,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:15,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:15,649 INFO L85 PathProgramCache]: Analyzing trace with hash 25149, now seen corresponding path program 1 times [2023-11-12 00:43:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:15,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637345669] [2023-11-12 00:43:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:15,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:15,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:15,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637345669] [2023-11-12 00:43:15,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637345669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:15,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:15,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:43:15,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673411311] [2023-11-12 00:43:15,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:15,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:15,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:15,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:15,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:15,979 INFO L87 Difference]: Start difference. First operand has 249 states, 238 states have (on average 3.004201680672269) internal successors, (715), 248 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:16,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:16,100 INFO L93 Difference]: Finished difference Result 250 states and 718 transitions. [2023-11-12 00:43:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:16,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-12 00:43:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:16,128 INFO L225 Difference]: With dead ends: 250 [2023-11-12 00:43:16,129 INFO L226 Difference]: Without dead ends: 248 [2023-11-12 00:43:16,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:16,139 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:16,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-11-12 00:43:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2023-11-12 00:43:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 238 states have (on average 2.995798319327731) internal successors, (713), 247 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 713 transitions. [2023-11-12 00:43:16,208 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 713 transitions. Word has length 2 [2023-11-12 00:43:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:16,209 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 713 transitions. [2023-11-12 00:43:16,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 713 transitions. [2023-11-12 00:43:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:43:16,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:16,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:43:16,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:43:16,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:16,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash 25140, now seen corresponding path program 1 times [2023-11-12 00:43:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:16,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33696591] [2023-11-12 00:43:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:16,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:16,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:16,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33696591] [2023-11-12 00:43:16,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33696591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:16,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:16,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:43:16,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561171602] [2023-11-12 00:43:16,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:16,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:16,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:16,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:16,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:16,363 INFO L87 Difference]: Start difference. First operand 248 states and 713 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:16,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:16,426 INFO L93 Difference]: Finished difference Result 247 states and 711 transitions. [2023-11-12 00:43:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:16,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-12 00:43:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:16,435 INFO L225 Difference]: With dead ends: 247 [2023-11-12 00:43:16,435 INFO L226 Difference]: Without dead ends: 247 [2023-11-12 00:43:16,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:16,437 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:16,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:43:16,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-12 00:43:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-11-12 00:43:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 238 states have (on average 2.9873949579831933) internal successors, (711), 246 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 711 transitions. [2023-11-12 00:43:16,494 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 711 transitions. Word has length 2 [2023-11-12 00:43:16,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:16,495 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 711 transitions. [2023-11-12 00:43:16,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 711 transitions. [2023-11-12 00:43:16,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:43:16,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:16,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:43:16,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:43:16,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:16,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:16,501 INFO L85 PathProgramCache]: Analyzing trace with hash 780371, now seen corresponding path program 1 times [2023-11-12 00:43:16,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:16,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800054785] [2023-11-12 00:43:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:16,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:16,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:16,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800054785] [2023-11-12 00:43:16,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800054785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16389509] [2023-11-12 00:43:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:16,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:16,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:16,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:16,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:43:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:16,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:43:16,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:16,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:43:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:16,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16389509] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:43:16,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1546717012] [2023-11-12 00:43:16,773 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:43:16,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:43:16,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-12 00:43:16,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827421838] [2023-11-12 00:43:16,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:43:16,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:16,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:16,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:16,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:16,782 INFO L87 Difference]: Start difference. First operand 247 states and 711 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:16,886 INFO L93 Difference]: Finished difference Result 250 states and 717 transitions. [2023-11-12 00:43:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:16,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:43:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:16,929 INFO L225 Difference]: With dead ends: 250 [2023-11-12 00:43:16,929 INFO L226 Difference]: Without dead ends: 250 [2023-11-12 00:43:16,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:16,931 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:16,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:16,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-12 00:43:16,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-11-12 00:43:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 241 states have (on average 2.975103734439834) internal successors, (717), 249 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 717 transitions. [2023-11-12 00:43:16,962 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 717 transitions. Word has length 3 [2023-11-12 00:43:16,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:16,962 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 717 transitions. [2023-11-12 00:43:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 717 transitions. [2023-11-12 00:43:16,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:43:16,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:16,964 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2023-11-12 00:43:16,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:17,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:17,170 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:17,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1773942717, now seen corresponding path program 2 times [2023-11-12 00:43:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:17,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318675254] [2023-11-12 00:43:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:17,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:17,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318675254] [2023-11-12 00:43:17,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318675254] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:17,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455286358] [2023-11-12 00:43:17,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:43:17,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:17,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:17,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:17,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:43:17,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:43:17,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:43:17,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:43:17,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 00:43:17,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:17,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455286358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:17,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:43:17,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 00:43:17,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288190605] [2023-11-12 00:43:17,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:17,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:17,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:17,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:17,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:43:17,496 INFO L87 Difference]: Start difference. First operand 250 states and 717 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:17,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:17,548 INFO L93 Difference]: Finished difference Result 249 states and 716 transitions. [2023-11-12 00:43:17,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:17,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:43:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:17,552 INFO L225 Difference]: With dead ends: 249 [2023-11-12 00:43:17,552 INFO L226 Difference]: Without dead ends: 249 [2023-11-12 00:43:17,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:43:17,554 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:17,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:43:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-12 00:43:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 245. [2023-11-12 00:43:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 237 states have (on average 2.9873417721518987) internal successors, (708), 244 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 708 transitions. [2023-11-12 00:43:17,568 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 708 transitions. Word has length 6 [2023-11-12 00:43:17,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:17,569 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 708 transitions. [2023-11-12 00:43:17,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:17,569 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 708 transitions. [2023-11-12 00:43:17,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:43:17,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:17,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:43:17,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:17,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:17,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:17,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1794349226, now seen corresponding path program 1 times [2023-11-12 00:43:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:17,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430144950] [2023-11-12 00:43:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:17,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:17,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:17,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430144950] [2023-11-12 00:43:17,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430144950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:17,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:17,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:43:17,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839987378] [2023-11-12 00:43:17,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:17,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:17,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:17,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:17,852 INFO L87 Difference]: Start difference. First operand 245 states and 708 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:17,930 INFO L93 Difference]: Finished difference Result 283 states and 852 transitions. [2023-11-12 00:43:17,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:17,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:43:17,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:17,934 INFO L225 Difference]: With dead ends: 283 [2023-11-12 00:43:17,934 INFO L226 Difference]: Without dead ends: 283 [2023-11-12 00:43:17,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:17,936 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:17,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:17,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-12 00:43:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-12 00:43:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 275 states have (on average 3.098181818181818) internal successors, (852), 282 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 852 transitions. [2023-11-12 00:43:17,951 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 852 transitions. Word has length 6 [2023-11-12 00:43:17,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:17,952 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 852 transitions. [2023-11-12 00:43:17,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 852 transitions. [2023-11-12 00:43:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:43:17,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:17,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:17,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:43:17,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:17,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash -209748168, now seen corresponding path program 1 times [2023-11-12 00:43:17,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:17,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69838865] [2023-11-12 00:43:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:17,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:18,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:18,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69838865] [2023-11-12 00:43:18,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69838865] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:18,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875661981] [2023-11-12 00:43:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:18,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:18,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:18,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:18,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:43:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:18,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:43:18,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:43:18,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:18,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875661981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:18,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:43:18,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 00:43:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239430072] [2023-11-12 00:43:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:18,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:43:18,164 INFO L87 Difference]: Start difference. First operand 283 states and 852 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:18,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:18,222 INFO L93 Difference]: Finished difference Result 284 states and 853 transitions. [2023-11-12 00:43:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:18,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:43:18,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:18,225 INFO L225 Difference]: With dead ends: 284 [2023-11-12 00:43:18,226 INFO L226 Difference]: Without dead ends: 284 [2023-11-12 00:43:18,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:43:18,227 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:18,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-12 00:43:18,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-11-12 00:43:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 276 states have (on average 3.0905797101449277) internal successors, (853), 283 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:18,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 853 transitions. [2023-11-12 00:43:18,241 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 853 transitions. Word has length 7 [2023-11-12 00:43:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:18,241 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 853 transitions. [2023-11-12 00:43:18,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 853 transitions. [2023-11-12 00:43:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:43:18,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:18,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:18,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:18,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:18,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:18,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:18,456 INFO L85 PathProgramCache]: Analyzing trace with hash 289560290, now seen corresponding path program 1 times [2023-11-12 00:43:18,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:18,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909054607] [2023-11-12 00:43:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:18,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:43:18,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909054607] [2023-11-12 00:43:18,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909054607] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563451066] [2023-11-12 00:43:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:18,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:18,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:18,521 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:18,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:43:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:18,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:43:18,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:43:18,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:43:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:43:18,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563451066] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:43:18,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1481887970] [2023-11-12 00:43:18,654 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:43:18,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:43:18,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 00:43:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426475513] [2023-11-12 00:43:18,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:43:18,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:43:18,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:18,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:43:18,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:18,656 INFO L87 Difference]: Start difference. First operand 284 states and 853 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:18,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:18,877 INFO L93 Difference]: Finished difference Result 398 states and 1399 transitions. [2023-11-12 00:43:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:18,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:43:18,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:18,882 INFO L225 Difference]: With dead ends: 398 [2023-11-12 00:43:18,882 INFO L226 Difference]: Without dead ends: 398 [2023-11-12 00:43:18,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:18,883 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 85 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:18,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 0 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:43:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-11-12 00:43:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2023-11-12 00:43:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 390 states have (on average 3.5871794871794873) internal successors, (1399), 397 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1399 transitions. [2023-11-12 00:43:18,904 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1399 transitions. Word has length 8 [2023-11-12 00:43:18,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:18,904 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 1399 transitions. [2023-11-12 00:43:18,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:18,905 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1399 transitions. [2023-11-12 00:43:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:43:18,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:18,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:18,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:19,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:19,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:19,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:19,112 INFO L85 PathProgramCache]: Analyzing trace with hash 289560288, now seen corresponding path program 1 times [2023-11-12 00:43:19,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:19,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718848704] [2023-11-12 00:43:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:19,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:43:19,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:19,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718848704] [2023-11-12 00:43:19,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718848704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:19,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:19,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:43:19,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529304112] [2023-11-12 00:43:19,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:19,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:19,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:19,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:19,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:19,172 INFO L87 Difference]: Start difference. First operand 398 states and 1399 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:19,246 INFO L93 Difference]: Finished difference Result 360 states and 1173 transitions. [2023-11-12 00:43:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:19,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:43:19,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:19,251 INFO L225 Difference]: With dead ends: 360 [2023-11-12 00:43:19,251 INFO L226 Difference]: Without dead ends: 360 [2023-11-12 00:43:19,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:19,254 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:19,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:19,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-12 00:43:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-11-12 00:43:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 355 states have (on average 3.304225352112676) internal successors, (1173), 359 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 1173 transitions. [2023-11-12 00:43:19,275 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 1173 transitions. Word has length 8 [2023-11-12 00:43:19,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:19,276 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 1173 transitions. [2023-11-12 00:43:19,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 1173 transitions. [2023-11-12 00:43:19,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:43:19,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:19,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:19,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:43:19,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:19,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:19,279 INFO L85 PathProgramCache]: Analyzing trace with hash 439538006, now seen corresponding path program 1 times [2023-11-12 00:43:19,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:19,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565162184] [2023-11-12 00:43:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:19,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:43:19,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:19,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565162184] [2023-11-12 00:43:19,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565162184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:19,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:19,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:43:19,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151806248] [2023-11-12 00:43:19,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:19,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:19,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:19,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:19,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:19,348 INFO L87 Difference]: Start difference. First operand 360 states and 1173 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:19,453 INFO L93 Difference]: Finished difference Result 418 states and 1417 transitions. [2023-11-12 00:43:19,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:19,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 00:43:19,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:19,461 INFO L225 Difference]: With dead ends: 418 [2023-11-12 00:43:19,461 INFO L226 Difference]: Without dead ends: 418 [2023-11-12 00:43:19,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:19,462 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:19,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:19,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-12 00:43:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2023-11-12 00:43:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 413 states have (on average 3.430992736077482) internal successors, (1417), 417 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1417 transitions. [2023-11-12 00:43:19,481 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1417 transitions. Word has length 9 [2023-11-12 00:43:19,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:19,482 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 1417 transitions. [2023-11-12 00:43:19,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:19,482 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1417 transitions. [2023-11-12 00:43:19,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:43:19,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:19,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:19,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:43:19,483 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:19,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash 740776968, now seen corresponding path program 1 times [2023-11-12 00:43:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206919653] [2023-11-12 00:43:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:19,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:43:19,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:19,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206919653] [2023-11-12 00:43:19,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206919653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:19,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101666297] [2023-11-12 00:43:19,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:19,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:19,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:19,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:19,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:43:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:19,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:43:19,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:19,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:43:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:19,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101666297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:43:19,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [802264273] [2023-11-12 00:43:19,847 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:43:19,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:43:19,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-12 00:43:19,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991143606] [2023-11-12 00:43:19,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:43:19,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:43:19,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:19,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:43:19,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:43:19,850 INFO L87 Difference]: Start difference. First operand 418 states and 1417 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:20,189 INFO L93 Difference]: Finished difference Result 634 states and 2098 transitions. [2023-11-12 00:43:20,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:43:20,189 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:43:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:20,193 INFO L225 Difference]: With dead ends: 634 [2023-11-12 00:43:20,194 INFO L226 Difference]: Without dead ends: 367 [2023-11-12 00:43:20,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:43:20,195 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:20,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-12 00:43:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 361. [2023-11-12 00:43:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 358 states have (on average 3.2960893854748603) internal successors, (1180), 360 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1180 transitions. [2023-11-12 00:43:20,213 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1180 transitions. Word has length 10 [2023-11-12 00:43:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:20,213 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 1180 transitions. [2023-11-12 00:43:20,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1180 transitions. [2023-11-12 00:43:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:43:20,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:20,215 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:20,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:20,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:20,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:20,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:20,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2127664097, now seen corresponding path program 1 times [2023-11-12 00:43:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:20,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463335708] [2023-11-12 00:43:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:20,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:43:20,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:20,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463335708] [2023-11-12 00:43:20,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463335708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21921614] [2023-11-12 00:43:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:20,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:20,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:20,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:20,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:43:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:20,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:43:20,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:43:20,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:43:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:43:20,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21921614] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:43:20,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [586672421] [2023-11-12 00:43:20,658 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:43:20,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:43:20,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 00:43:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470193805] [2023-11-12 00:43:20,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:43:20,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:43:20,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:43:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:20,664 INFO L87 Difference]: Start difference. First operand 361 states and 1180 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:20,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:20,803 INFO L93 Difference]: Finished difference Result 535 states and 1912 transitions. [2023-11-12 00:43:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 00:43:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:20,810 INFO L225 Difference]: With dead ends: 535 [2023-11-12 00:43:20,810 INFO L226 Difference]: Without dead ends: 535 [2023-11-12 00:43:20,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:20,812 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:20,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-11-12 00:43:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2023-11-12 00:43:20,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 532 states have (on average 3.593984962406015) internal successors, (1912), 534 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1912 transitions. [2023-11-12 00:43:20,839 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1912 transitions. Word has length 11 [2023-11-12 00:43:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:20,840 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 1912 transitions. [2023-11-12 00:43:20,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1912 transitions. [2023-11-12 00:43:20,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:43:20,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:20,846 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:20,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 00:43:21,053 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:43:21,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1025388822, now seen corresponding path program 2 times [2023-11-12 00:43:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535931415] [2023-11-12 00:43:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:43:21,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:21,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535931415] [2023-11-12 00:43:21,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535931415] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:21,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550752273] [2023-11-12 00:43:21,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:43:21,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:21,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:21,251 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:21,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:43:21,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:43:21,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:43:21,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:43:21,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-12 00:43:21,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:21,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550752273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:21,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:43:21,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 00:43:21,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440738576] [2023-11-12 00:43:21,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:21,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:21,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:21,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:43:21,392 INFO L87 Difference]: Start difference. First operand 535 states and 1912 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:21,430 INFO L93 Difference]: Finished difference Result 427 states and 1544 transitions. [2023-11-12 00:43:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:21,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:43:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:21,431 INFO L225 Difference]: With dead ends: 427 [2023-11-12 00:43:21,432 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:43:21,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:43:21,433 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:21,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:43:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:43:21,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:43:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:43:21,434 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2023-11-12 00:43:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:21,435 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:43:21,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:43:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:43:21,435 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:43:21,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-11-12 00:43:21,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-12 00:43:21,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-12 00:43:21,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-12 00:43:21,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-12 00:43:21,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-12 00:43:21,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-11-12 00:43:21,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-11-12 00:43:21,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-11-12 00:43:21,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-12 00:43:21,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-12 00:43:21,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-12 00:43:21,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-12 00:43:21,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:21,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 00:43:21,649 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:21,653 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 00:43:21,653 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:43:21,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:43:21 BasicIcfg [2023-11-12 00:43:21,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:43:21,657 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:43:21,657 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:43:21,657 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:43:21,658 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:06" (3/4) ... [2023-11-12 00:43:21,659 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:43:21,662 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-12 00:43:21,662 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-12 00:43:21,662 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-12 00:43:21,672 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-11-12 00:43:21,674 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 00:43:21,674 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 00:43:21,675 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:43:21,767 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:43:21,768 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:43:21,768 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:43:21,769 INFO L158 Benchmark]: Toolchain (without parser) took 16283.94ms. Allocated memory was 232.8MB in the beginning and 281.0MB in the end (delta: 48.2MB). Free memory was 185.5MB in the beginning and 93.2MB in the end (delta: 92.3MB). Peak memory consumption was 142.5MB. Max. memory is 16.1GB. [2023-11-12 00:43:21,769 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 151.0MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:43:21,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.17ms. Allocated memory is still 232.8MB. Free memory was 185.5MB in the beginning and 172.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:43:21,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.14ms. Allocated memory is still 232.8MB. Free memory was 172.9MB in the beginning and 170.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:43:21,770 INFO L158 Benchmark]: Boogie Preprocessor took 38.14ms. Allocated memory is still 232.8MB. Free memory was 170.8MB in the beginning and 169.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:43:21,771 INFO L158 Benchmark]: RCFGBuilder took 830.81ms. Allocated memory is still 232.8MB. Free memory was 168.7MB in the beginning and 144.7MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-12 00:43:21,771 INFO L158 Benchmark]: TraceAbstraction took 14975.70ms. Allocated memory was 232.8MB in the beginning and 281.0MB in the end (delta: 48.2MB). Free memory was 144.7MB in the beginning and 98.4MB in the end (delta: 46.3MB). Peak memory consumption was 96.4MB. Max. memory is 16.1GB. [2023-11-12 00:43:21,772 INFO L158 Benchmark]: Witness Printer took 111.27ms. Allocated memory is still 281.0MB. Free memory was 98.4MB in the beginning and 93.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:43:21,774 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 151.0MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.17ms. Allocated memory is still 232.8MB. Free memory was 185.5MB in the beginning and 172.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.14ms. Allocated memory is still 232.8MB. Free memory was 172.9MB in the beginning and 170.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.14ms. Allocated memory is still 232.8MB. Free memory was 170.8MB in the beginning and 169.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 830.81ms. Allocated memory is still 232.8MB. Free memory was 168.7MB in the beginning and 144.7MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 14975.70ms. Allocated memory was 232.8MB in the beginning and 281.0MB in the end (delta: 48.2MB). Free memory was 144.7MB in the beginning and 98.4MB in the end (delta: 46.3MB). Peak memory consumption was 96.4MB. Max. memory is 16.1GB. * Witness Printer took 111.27ms. Allocated memory is still 281.0MB. Free memory was 98.4MB in the beginning and 93.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.7s, 197 PlacesBefore, 40 PlacesAfterwards, 199 TransitionsBefore, 33 TransitionsAfterwards, 1980 CoEnabledTransitionPairs, 8 FixpointIterations, 129 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 27 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 210 TotalNumberOfCompositions, 3092 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2223, independent: 2141, independent conditional: 0, independent unconditional: 2141, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1325, independent: 1298, independent conditional: 0, independent unconditional: 1298, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1325, independent: 1298, independent conditional: 0, independent unconditional: 1298, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 165, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2223, independent: 843, independent conditional: 0, independent unconditional: 843, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 1325, unknown conditional: 0, unknown unconditional: 1325] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 230 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 14.8s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 289 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 289 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1077 IncrementalHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 0 mSDtfsCounter, 1077 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=535occurred in iteration=11, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 141 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 5 NumberOfNonLiveVariables, 876 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 48/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 00:43:21,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca055493-90f6-4101-b513-34ec63bbe352/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE