./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/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_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/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_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:59:30,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:59:31,089 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:59:31,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:59:31,095 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:59:31,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:59:31,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:59:31,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:59:31,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:59:31,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:59:31,122 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:59:31,122 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:59:31,123 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:59:31,123 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:59:31,124 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:59:31,125 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:59:31,125 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:59:31,126 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:59:31,126 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:59:31,127 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:59:31,127 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:59:31,128 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:59:31,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:59:31,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:59:31,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:59:31,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:59:31,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:59:31,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:59:31,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:59:31,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:59:31,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:59:31,134 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:59:31,134 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:59:31,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:59:31,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:59:31,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:59:31,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:59:31,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:59:31,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:59:31,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:59:31,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:59:31,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:59:31,139 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:59:31,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:59:31,139 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:59:31,139 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:59:31,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:59:31,140 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_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2023-11-12 00:59:31,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:59:31,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:59:31,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:59:31,464 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:59:31,464 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:59:31,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-11-12 00:59:34,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:59:35,001 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:59:35,001 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-11-12 00:59:35,025 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/data/6b503a743/4bf1c68e87e84bd4bc5c58b0a9f4cc4c/FLAGb08f53ae8 [2023-11-12 00:59:35,053 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/data/6b503a743/4bf1c68e87e84bd4bc5c58b0a9f4cc4c [2023-11-12 00:59:35,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:59:35,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:59:35,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:59:35,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:59:35,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:59:35,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:35,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d8e1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35, skipping insertion in model container [2023-11-12 00:59:35,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:35,134 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:59:35,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:35,761 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:59:35,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:35,887 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:59:35,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35 WrapperNode [2023-11-12 00:59:35,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:59:35,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:59:35,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:59:35,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:59:35,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:35,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:35,954 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 217 [2023-11-12 00:59:35,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:59:35,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:59:35,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:59:35,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:59:35,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:35,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:35,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:35,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:35,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:36,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:36,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:36,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:36,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:59:36,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:59:36,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:59:36,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:59:36,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (1/1) ... [2023-11-12 00:59:36,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:59:36,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:36,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:59:36,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:59:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:59:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:59:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:59:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:59:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 00:59:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:59:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 00:59:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 00:59:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:59:36,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:59:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:59:36,118 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 00:59:36,357 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:59:36,359 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:59:36,805 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:59:36,814 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:59:36,814 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-12 00:59:36,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:59:36 BoogieIcfgContainer [2023-11-12 00:59:36,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:59:36,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:59:36,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:59:36,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:59:36,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:59:35" (1/3) ... [2023-11-12 00:59:36,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ba1113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:59:36, skipping insertion in model container [2023-11-12 00:59:36,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:35" (2/3) ... [2023-11-12 00:59:36,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ba1113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:59:36, skipping insertion in model container [2023-11-12 00:59:36,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:59:36" (3/3) ... [2023-11-12 00:59:36,827 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2023-11-12 00:59:36,836 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:59:36,845 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:59:36,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-12 00:59:36,845 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:59:36,924 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 00:59:36,972 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:59:36,987 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 243 transitions, 493 flow [2023-11-12 00:59:36,990 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 243 transitions, 493 flow [2023-11-12 00:59:36,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 243 transitions, 493 flow [2023-11-12 00:59:37,146 INFO L124 PetriNetUnfolderBase]: 48/330 cut-off events. [2023-11-12 00:59:37,147 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 00:59:37,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 330 events. 48/330 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1117 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-11-12 00:59:37,174 INFO L119 LiptonReduction]: Number of co-enabled transitions 17654 [2023-11-12 00:59:42,881 INFO L134 LiptonReduction]: Checked pairs total: 27173 [2023-11-12 00:59:42,881 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-11-12 00:59:42,894 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 83 transitions, 173 flow [2023-11-12 00:59:42,983 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 674 states, 603 states have (on average 3.1393034825870645) internal successors, (1893), 673 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states 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 00:59:43,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:59:43,018 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;@2593481, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:59:43,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-12 00:59:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 674 states, 603 states have (on average 3.1393034825870645) internal successors, (1893), 673 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states 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 00:59:43,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:59:43,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:43,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:59:43,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-12 00:59:43,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:43,034 INFO L85 PathProgramCache]: Analyzing trace with hash 31452, now seen corresponding path program 1 times [2023-11-12 00:59:43,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:43,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829895878] [2023-11-12 00:59:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:43,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:43,224 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 00:59:43,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829895878] [2023-11-12 00:59:43,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829895878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:43,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:43,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:59:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262403735] [2023-11-12 00:59:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:43,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:59:43,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:43,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:59:43,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:59:43,261 INFO L87 Difference]: Start difference. First operand has 674 states, 603 states have (on average 3.1393034825870645) internal successors, (1893), 673 states have internal predecessors, (1893), 0 states have call successors, (0), 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 2 states, 1 states have (on average 2.0) 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 00:59:43,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:43,397 INFO L93 Difference]: Finished difference Result 617 states and 1208 transitions. [2023-11-12 00:59:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:59:43,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) 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 00:59:43,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:43,421 INFO L225 Difference]: With dead ends: 617 [2023-11-12 00:59:43,422 INFO L226 Difference]: Without dead ends: 600 [2023-11-12 00:59:43,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:59:43,426 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:43,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:59:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-11-12 00:59:43,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2023-11-12 00:59:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 550 states have (on average 2.1454545454545455) internal successors, (1180), 599 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 00:59:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1180 transitions. [2023-11-12 00:59:43,542 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1180 transitions. Word has length 2 [2023-11-12 00:59:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:43,543 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 1180 transitions. [2023-11-12 00:59:43,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) 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 00:59:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1180 transitions. [2023-11-12 00:59:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:59:43,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:43,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:59:43,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:59:43,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-12 00:59:43,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:43,547 INFO L85 PathProgramCache]: Analyzing trace with hash 31412, now seen corresponding path program 1 times [2023-11-12 00:59:43,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:43,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830110777] [2023-11-12 00:59:43,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:43,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:43,694 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 00:59:43,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:43,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830110777] [2023-11-12 00:59:43,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830110777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:43,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:43,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:59:43,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838059678] [2023-11-12 00:59:43,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:43,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:43,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:43,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:43,698 INFO L87 Difference]: Start difference. First operand 600 states and 1180 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 00:59:43,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:43,851 INFO L93 Difference]: Finished difference Result 601 states and 1181 transitions. [2023-11-12 00:59:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:43,852 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 00:59:43,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:43,858 INFO L225 Difference]: With dead ends: 601 [2023-11-12 00:59:43,858 INFO L226 Difference]: Without dead ends: 601 [2023-11-12 00:59:43,859 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 00:59:43,860 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:43,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:59:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-11-12 00:59:43,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2023-11-12 00:59:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 551 states have (on average 2.143375680580762) internal successors, (1181), 600 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states 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 00:59:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1181 transitions. [2023-11-12 00:59:43,890 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1181 transitions. Word has length 2 [2023-11-12 00:59:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:43,890 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 1181 transitions. [2023-11-12 00:59:43,891 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 00:59:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1181 transitions. [2023-11-12 00:59:43,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:59:43,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:43,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:59:43,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:59:43,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-12 00:59:43,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash 975858, now seen corresponding path program 1 times [2023-11-12 00:59:43,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:43,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291443222] [2023-11-12 00:59:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:43,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:44,027 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 00:59:44,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291443222] [2023-11-12 00:59:44,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291443222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:59:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627483873] [2023-11-12 00:59:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:44,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:44,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:44,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:59:44,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:59:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:44,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:59:44,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:44,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:59:44,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627483873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:44,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:59:44,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-12 00:59:44,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280427842] [2023-11-12 00:59:44,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:44,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:59:44,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:44,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:59:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:44,165 INFO L87 Difference]: Start difference. First operand 601 states and 1181 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 00:59:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:44,311 INFO L93 Difference]: Finished difference Result 600 states and 1180 transitions. [2023-11-12 00:59:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:59:44,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 3 [2023-11-12 00:59:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:44,317 INFO L225 Difference]: With dead ends: 600 [2023-11-12 00:59:44,317 INFO L226 Difference]: Without dead ends: 600 [2023-11-12 00:59:44,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:44,319 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:44,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:59:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-11-12 00:59:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2023-11-12 00:59:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 551 states have (on average 2.1415607985480944) internal successors, (1180), 599 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 00:59:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1180 transitions. [2023-11-12 00:59:44,343 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1180 transitions. Word has length 3 [2023-11-12 00:59:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:44,343 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 1180 transitions. [2023-11-12 00:59:44,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 00:59:44,344 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1180 transitions. [2023-11-12 00:59:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:59:44,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:44,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:59:44,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:59:44,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:44,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-12 00:59:44,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash -989896927, now seen corresponding path program 1 times [2023-11-12 00:59:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:44,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3399798] [2023-11-12 00:59:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:44,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:44,633 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 00:59:44,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:44,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3399798] [2023-11-12 00:59:44,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3399798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:59:44,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316686776] [2023-11-12 00:59:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:44,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:44,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:44,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:59:44,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:59:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:44,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:59:44,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:44,762 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 00:59:44,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:59:44,786 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 00:59:44,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316686776] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:59:44,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1672789543] [2023-11-12 00:59:44,796 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 00:59:44,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:59:44,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 00:59:44,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118174515] [2023-11-12 00:59:44,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:59:44,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:59:44,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:44,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:59:44,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:44,805 INFO L87 Difference]: Start difference. First operand 600 states and 1180 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 00:59:44,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:44,985 INFO L93 Difference]: Finished difference Result 603 states and 1183 transitions. [2023-11-12 00:59:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:59:44,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 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 00:59:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:44,991 INFO L225 Difference]: With dead ends: 603 [2023-11-12 00:59:44,991 INFO L226 Difference]: Without dead ends: 603 [2023-11-12 00:59:44,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 00:59:44,993 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:44,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:59:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-11-12 00:59:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2023-11-12 00:59:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 554 states have (on average 2.1353790613718413) internal successors, (1183), 602 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states 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 00:59:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1183 transitions. [2023-11-12 00:59:45,019 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1183 transitions. Word has length 6 [2023-11-12 00:59:45,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:45,020 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 1183 transitions. [2023-11-12 00:59:45,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 00:59:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1183 transitions. [2023-11-12 00:59:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:59:45,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:45,021 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-12 00:59:45,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:59:45,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:45,229 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-12 00:59:45,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:45,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1005540961, now seen corresponding path program 2 times [2023-11-12 00:59:45,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:45,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81715212] [2023-11-12 00:59:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:45,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:45,372 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 00:59:45,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:45,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81715212] [2023-11-12 00:59:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81715212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:45,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:45,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:59:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528437970] [2023-11-12 00:59:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:45,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:45,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:45,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:45,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:45,380 INFO L87 Difference]: Start difference. First operand 603 states and 1183 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 00:59:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:45,523 INFO L93 Difference]: Finished difference Result 549 states and 1087 transitions. [2023-11-12 00:59:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:45,525 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 9 [2023-11-12 00:59:45,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:45,530 INFO L225 Difference]: With dead ends: 549 [2023-11-12 00:59:45,536 INFO L226 Difference]: Without dead ends: 549 [2023-11-12 00:59:45,537 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 00:59:45,539 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:45,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:59:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-11-12 00:59:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2023-11-12 00:59:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 514 states have (on average 2.114785992217899) internal successors, (1087), 548 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states 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 00:59:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1087 transitions. [2023-11-12 00:59:45,565 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1087 transitions. Word has length 9 [2023-11-12 00:59:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:45,566 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 1087 transitions. [2023-11-12 00:59:45,566 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 00:59:45,566 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1087 transitions. [2023-11-12 00:59:45,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:59:45,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:45,569 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-12 00:59:45,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:59:45,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-12 00:59:45,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash 42842120, now seen corresponding path program 1 times [2023-11-12 00:59:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:45,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067229102] [2023-11-12 00:59:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:45,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:59:45,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:45,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067229102] [2023-11-12 00:59:45,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067229102] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:59:45,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135887900] [2023-11-12 00:59:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:45,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:45,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:45,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:59:45,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:59:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:45,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:59:45,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:59:45,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:59:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:59:45,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135887900] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:59:45,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [795991932] [2023-11-12 00:59:45,984 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 00:59:45,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:59:45,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-12 00:59:45,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548421875] [2023-11-12 00:59:45,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:59:45,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:59:45,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:45,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:59:45,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:59:45,989 INFO L87 Difference]: Start difference. First operand 549 states and 1087 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 00:59:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:46,202 INFO L93 Difference]: Finished difference Result 555 states and 1093 transitions. [2023-11-12 00:59:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:59:46,203 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 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 00:59:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:46,208 INFO L225 Difference]: With dead ends: 555 [2023-11-12 00:59:46,208 INFO L226 Difference]: Without dead ends: 555 [2023-11-12 00:59:46,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:59:46,211 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:46,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:59:46,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-11-12 00:59:46,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2023-11-12 00:59:46,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 520 states have (on average 2.101923076923077) internal successors, (1093), 554 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states 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 00:59:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1093 transitions. [2023-11-12 00:59:46,236 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1093 transitions. Word has length 11 [2023-11-12 00:59:46,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:46,236 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 1093 transitions. [2023-11-12 00:59:46,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 00:59:46,237 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1093 transitions. [2023-11-12 00:59:46,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:59:46,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:46,238 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-12 00:59:46,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:59:46,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:46,448 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-12 00:59:46,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:46,448 INFO L85 PathProgramCache]: Analyzing trace with hash 59979976, now seen corresponding path program 2 times [2023-11-12 00:59:46,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:46,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003103020] [2023-11-12 00:59:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:46,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:59:46,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:59:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:59:46,536 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:59:46,536 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:59:46,538 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-12 00:59:46,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-11-12 00:59:46,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-11-12 00:59:46,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-11-12 00:59:46,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-11-12 00:59:46,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-11-12 00:59:46,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-11-12 00:59:46,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-11-12 00:59:46,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-11-12 00:59:46,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-11-12 00:59:46,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-11-12 00:59:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-11-12 00:59:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-11-12 00:59:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-11-12 00:59:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-11-12 00:59:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-11-12 00:59:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-11-12 00:59:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-11-12 00:59:46,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-11-12 00:59:46,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-11-12 00:59:46,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-11-12 00:59:46,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-11-12 00:59:46,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-11-12 00:59:46,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:59:46,549 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2023-11-12 00:59:46,551 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 00:59:46,551 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 00:59:46,606 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 00:59:46,611 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:59:46,611 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 336 transitions, 688 flow [2023-11-12 00:59:46,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 336 transitions, 688 flow [2023-11-12 00:59:46,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 336 transitions, 688 flow [2023-11-12 00:59:46,779 INFO L124 PetriNetUnfolderBase]: 80/548 cut-off events. [2023-11-12 00:59:46,780 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-12 00:59:46,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 548 events. 80/548 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2335 event pairs, 0 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 332. Up to 12 conditions per place. [2023-11-12 00:59:46,833 INFO L119 LiptonReduction]: Number of co-enabled transitions 55328 [2023-11-12 00:59:54,031 INFO L134 LiptonReduction]: Checked pairs total: 88000 [2023-11-12 00:59:54,031 INFO L136 LiptonReduction]: Total number of compositions: 336 [2023-11-12 00:59:54,032 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 120 transitions, 256 flow [2023-11-12 00:59:54,923 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 16269 states, 15736 states have (on average 4.34735638027453) internal successors, (68410), 16268 states have internal predecessors, (68410), 0 states have call successors, (0), 0 states 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 00:59:54,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:59:54,925 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;@2593481, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:59:54,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-12 00:59:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 16269 states, 15736 states have (on average 4.34735638027453) internal successors, (68410), 16268 states have internal predecessors, (68410), 0 states have call successors, (0), 0 states 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 00:59:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:59:55,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:55,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:59:55,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 00:59:55,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:55,032 INFO L85 PathProgramCache]: Analyzing trace with hash 55519, now seen corresponding path program 1 times [2023-11-12 00:59:55,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:55,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984210572] [2023-11-12 00:59:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:55,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:55,046 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 00:59:55,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:55,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984210572] [2023-11-12 00:59:55,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984210572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:55,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:55,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:59:55,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627972980] [2023-11-12 00:59:55,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:55,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:59:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:59:55,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:59:55,084 INFO L87 Difference]: Start difference. First operand has 16269 states, 15736 states have (on average 4.34735638027453) internal successors, (68410), 16268 states have internal predecessors, (68410), 0 states have call successors, (0), 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 2 states, 1 states have (on average 2.0) 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 00:59:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:55,529 INFO L93 Difference]: Finished difference Result 13638 states and 40081 transitions. [2023-11-12 00:59:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:59:55,530 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) 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 00:59:55,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:55,729 INFO L225 Difference]: With dead ends: 13638 [2023-11-12 00:59:55,729 INFO L226 Difference]: Without dead ends: 13549 [2023-11-12 00:59:55,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:59:55,731 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:55,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:59:55,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13549 states. [2023-11-12 00:59:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13549 to 13549. [2023-11-12 00:59:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13549 states, 13261 states have (on average 3.003393409245155) internal successors, (39828), 13548 states have internal predecessors, (39828), 0 states have call successors, (0), 0 states 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 00:59:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13549 states to 13549 states and 39828 transitions. [2023-11-12 00:59:56,518 INFO L78 Accepts]: Start accepts. Automaton has 13549 states and 39828 transitions. Word has length 2 [2023-11-12 00:59:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:56,518 INFO L495 AbstractCegarLoop]: Abstraction has 13549 states and 39828 transitions. [2023-11-12 00:59:56,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) 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 00:59:56,519 INFO L276 IsEmpty]: Start isEmpty. Operand 13549 states and 39828 transitions. [2023-11-12 00:59:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:59:56,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:56,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:59:56,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:59:56,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 00:59:56,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:56,521 INFO L85 PathProgramCache]: Analyzing trace with hash 55473, now seen corresponding path program 1 times [2023-11-12 00:59:56,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:56,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614285768] [2023-11-12 00:59:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:56,554 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 00:59:56,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:56,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614285768] [2023-11-12 00:59:56,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614285768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:56,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:56,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:59:56,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144591445] [2023-11-12 00:59:56,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:56,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:56,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:56,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:56,558 INFO L87 Difference]: Start difference. First operand 13549 states and 39828 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 00:59:56,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:56,957 INFO L93 Difference]: Finished difference Result 13548 states and 39827 transitions. [2023-11-12 00:59:56,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:56,958 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 00:59:56,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:57,043 INFO L225 Difference]: With dead ends: 13548 [2023-11-12 00:59:57,044 INFO L226 Difference]: Without dead ends: 13548 [2023-11-12 00:59:57,044 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 00:59:57,045 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:57,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:59:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13548 states. [2023-11-12 00:59:57,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13548 to 13548. [2023-11-12 00:59:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13548 states, 13261 states have (on average 3.003318000150818) internal successors, (39827), 13547 states have internal predecessors, (39827), 0 states have call successors, (0), 0 states 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 00:59:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13548 states to 13548 states and 39827 transitions. [2023-11-12 00:59:57,995 INFO L78 Accepts]: Start accepts. Automaton has 13548 states and 39827 transitions. Word has length 2 [2023-11-12 00:59:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:57,995 INFO L495 AbstractCegarLoop]: Abstraction has 13548 states and 39827 transitions. [2023-11-12 00:59:57,996 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 00:59:57,996 INFO L276 IsEmpty]: Start isEmpty. Operand 13548 states and 39827 transitions. [2023-11-12 00:59:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:59:57,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:57,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:59:57,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:59:57,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 00:59:57,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:57,998 INFO L85 PathProgramCache]: Analyzing trace with hash -157200139, now seen corresponding path program 1 times [2023-11-12 00:59:57,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:57,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346671679] [2023-11-12 00:59:57,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:57,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:58,027 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 00:59:58,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:58,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346671679] [2023-11-12 00:59:58,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346671679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:58,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:58,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:59:58,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204387563] [2023-11-12 00:59:58,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:58,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:58,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:58,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:58,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:58,030 INFO L87 Difference]: Start difference. First operand 13548 states and 39827 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 00:59:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:58,343 INFO L93 Difference]: Finished difference Result 13549 states and 39828 transitions. [2023-11-12 00:59:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:58,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 00:59:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:58,451 INFO L225 Difference]: With dead ends: 13549 [2023-11-12 00:59:58,451 INFO L226 Difference]: Without dead ends: 13549 [2023-11-12 00:59:58,452 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 00:59:58,453 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:58,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:59:58,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13549 states. [2023-11-12 00:59:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13549 to 13549. [2023-11-12 00:59:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13549 states, 13262 states have (on average 3.00316694314583) internal successors, (39828), 13548 states have internal predecessors, (39828), 0 states have call successors, (0), 0 states 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 00:59:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13549 states to 13549 states and 39828 transitions. [2023-11-12 00:59:59,002 INFO L78 Accepts]: Start accepts. Automaton has 13549 states and 39828 transitions. Word has length 6 [2023-11-12 00:59:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:59,003 INFO L495 AbstractCegarLoop]: Abstraction has 13549 states and 39828 transitions. [2023-11-12 00:59:59,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 00:59:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 13549 states and 39828 transitions. [2023-11-12 00:59:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:59:59,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:59,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:59:59,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:59:59,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 00:59:59,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:59,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1344069187, now seen corresponding path program 1 times [2023-11-12 00:59:59,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:59,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071086445] [2023-11-12 00:59:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:59,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:59,231 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 00:59:59,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071086445] [2023-11-12 00:59:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071086445] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:59:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417887581] [2023-11-12 00:59:59,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:59,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:59,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:59,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:59:59,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:59:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:59,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:59:59,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:59,377 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 00:59:59,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:59:59,468 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 00:59:59,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417887581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:59:59,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1166531658] [2023-11-12 00:59:59,469 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 00:59:59,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:59:59,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-12 00:59:59,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572835513] [2023-11-12 00:59:59,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:59:59,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:59:59,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:59,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:59:59,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:59,471 INFO L87 Difference]: Start difference. First operand 13549 states and 39828 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 00:59:59,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:59,979 INFO L93 Difference]: Finished difference Result 13552 states and 39831 transitions. [2023-11-12 00:59:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:59:59,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 00:59:59,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:00,051 INFO L225 Difference]: With dead ends: 13552 [2023-11-12 01:00:00,052 INFO L226 Difference]: Without dead ends: 13552 [2023-11-12 01:00:00,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:00,053 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:00,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:00:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13552 states. [2023-11-12 01:00:00,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13552 to 13552. [2023-11-12 01:00:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13552 states, 13265 states have (on average 3.0027139087825105) internal successors, (39831), 13551 states have internal predecessors, (39831), 0 states have call successors, (0), 0 states 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 01:00:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13552 states to 13552 states and 39831 transitions. [2023-11-12 01:00:00,625 INFO L78 Accepts]: Start accepts. Automaton has 13552 states and 39831 transitions. Word has length 7 [2023-11-12 01:00:00,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:00,626 INFO L495 AbstractCegarLoop]: Abstraction has 13552 states and 39831 transitions. [2023-11-12 01:00:00,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 01:00:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 13552 states and 39831 transitions. [2023-11-12 01:00:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 01:00:00,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:00,628 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:00,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 01:00:00,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:00,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 01:00:00,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash 552813301, now seen corresponding path program 2 times [2023-11-12 01:00:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:00,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999942012] [2023-11-12 01:00:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:00,903 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 01:00:00,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:00,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999942012] [2023-11-12 01:00:00,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999942012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:00,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:00,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:00,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439487] [2023-11-12 01:00:00,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:00,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:00,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:00,906 INFO L87 Difference]: Start difference. First operand 13552 states and 39831 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 01:00:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:01,265 INFO L93 Difference]: Finished difference Result 13498 states and 39735 transitions. [2023-11-12 01:00:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:01,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 10 [2023-11-12 01:00:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:01,338 INFO L225 Difference]: With dead ends: 13498 [2023-11-12 01:00:01,338 INFO L226 Difference]: Without dead ends: 13498 [2023-11-12 01:00:01,339 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 01:00:01,340 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:01,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:01,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13498 states. [2023-11-12 01:00:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13498 to 13498. [2023-11-12 01:00:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13498 states, 13225 states have (on average 3.0045368620037807) internal successors, (39735), 13497 states have internal predecessors, (39735), 0 states have call successors, (0), 0 states 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 01:00:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13498 states to 13498 states and 39735 transitions. [2023-11-12 01:00:01,905 INFO L78 Accepts]: Start accepts. Automaton has 13498 states and 39735 transitions. Word has length 10 [2023-11-12 01:00:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:01,906 INFO L495 AbstractCegarLoop]: Abstraction has 13498 states and 39735 transitions. [2023-11-12 01:00:01,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 01:00:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 13498 states and 39735 transitions. [2023-11-12 01:00:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 01:00:01,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:01,908 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:01,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 01:00:01,908 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 01:00:01,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1718984245, now seen corresponding path program 1 times [2023-11-12 01:00:01,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:01,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001892900] [2023-11-12 01:00:01,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:01,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:02,066 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 01:00:02,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:02,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001892900] [2023-11-12 01:00:02,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001892900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:00:02,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285616870] [2023-11-12 01:00:02,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:02,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:02,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:02,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:00:02,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 01:00:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:02,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 01:00:02,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:02,230 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 01:00:02,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:00:02,310 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 01:00:02,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285616870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:00:02,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1955824181] [2023-11-12 01:00:02,311 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 01:00:02,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:00:02,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-12 01:00:02,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721294902] [2023-11-12 01:00:02,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 01:00:02,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 01:00:02,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:02,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 01:00:02,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-12 01:00:02,315 INFO L87 Difference]: Start difference. First operand 13498 states and 39735 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 01:00:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:02,799 INFO L93 Difference]: Finished difference Result 13504 states and 39741 transitions. [2023-11-12 01:00:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 01:00:02,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 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 13 [2023-11-12 01:00:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:02,855 INFO L225 Difference]: With dead ends: 13504 [2023-11-12 01:00:02,856 INFO L226 Difference]: Without dead ends: 13504 [2023-11-12 01:00:02,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-12 01:00:02,859 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:02,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:00:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13504 states. [2023-11-12 01:00:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13504 to 13504. [2023-11-12 01:00:03,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13504 states, 13231 states have (on average 3.0036278437004005) internal successors, (39741), 13503 states have internal predecessors, (39741), 0 states have call successors, (0), 0 states 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 01:00:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13504 states to 13504 states and 39741 transitions. [2023-11-12 01:00:03,308 INFO L78 Accepts]: Start accepts. Automaton has 13504 states and 39741 transitions. Word has length 13 [2023-11-12 01:00:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:03,308 INFO L495 AbstractCegarLoop]: Abstraction has 13504 states and 39741 transitions. [2023-11-12 01:00:03,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 01:00:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13504 states and 39741 transitions. [2023-11-12 01:00:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 01:00:03,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:03,310 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:03,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-12 01:00:03,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 01:00:03,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 01:00:03,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash -416254261, now seen corresponding path program 2 times [2023-11-12 01:00:03,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:03,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30188300] [2023-11-12 01:00:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:03,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 01:00:04,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:04,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30188300] [2023-11-12 01:00:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30188300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:04,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:04,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:00:04,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738953222] [2023-11-12 01:00:04,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:04,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 01:00:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:04,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 01:00:04,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:00:04,120 INFO L87 Difference]: Start difference. First operand 13504 states and 39741 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 01:00:04,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:04,773 INFO L93 Difference]: Finished difference Result 18840 states and 54194 transitions. [2023-11-12 01:00:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:00:04,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 19 [2023-11-12 01:00:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:04,838 INFO L225 Difference]: With dead ends: 18840 [2023-11-12 01:00:04,838 INFO L226 Difference]: Without dead ends: 18840 [2023-11-12 01:00:04,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-12 01:00:04,839 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 350 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:04,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 65 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 01:00:05,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18840 states. [2023-11-12 01:00:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18840 to 14670. [2023-11-12 01:00:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14670 states, 14409 states have (on average 3.0140884169616213) internal successors, (43430), 14669 states have internal predecessors, (43430), 0 states have call successors, (0), 0 states 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 01:00:05,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14670 states to 14670 states and 43430 transitions. [2023-11-12 01:00:05,536 INFO L78 Accepts]: Start accepts. Automaton has 14670 states and 43430 transitions. Word has length 19 [2023-11-12 01:00:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:05,537 INFO L495 AbstractCegarLoop]: Abstraction has 14670 states and 43430 transitions. [2023-11-12 01:00:05,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 01:00:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 14670 states and 43430 transitions. [2023-11-12 01:00:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 01:00:05,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:05,540 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:05,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 01:00:05,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 01:00:05,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1970679386, now seen corresponding path program 1 times [2023-11-12 01:00:05,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:05,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386369412] [2023-11-12 01:00:05,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:05,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 01:00:05,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:05,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386369412] [2023-11-12 01:00:05,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386369412] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:00:05,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6146126] [2023-11-12 01:00:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:05,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:05,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:05,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:00:05,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 01:00:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:05,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:00:05,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 01:00:05,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:00:05,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6146126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:05,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:00:05,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 01:00:05,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108270721] [2023-11-12 01:00:05,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:05,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:00:05,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:05,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:00:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:05,883 INFO L87 Difference]: Start difference. First operand 14670 states and 43430 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 01:00:06,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:06,263 INFO L93 Difference]: Finished difference Result 14175 states and 41887 transitions. [2023-11-12 01:00:06,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:00:06,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20 [2023-11-12 01:00:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:06,340 INFO L225 Difference]: With dead ends: 14175 [2023-11-12 01:00:06,340 INFO L226 Difference]: Without dead ends: 14175 [2023-11-12 01:00:06,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:06,341 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 88 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:06,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 28 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:00:06,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14175 states. [2023-11-12 01:00:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14175 to 14175. [2023-11-12 01:00:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14175 states, 13939 states have (on average 3.0050218810531604) internal successors, (41887), 14174 states have internal predecessors, (41887), 0 states have call successors, (0), 0 states 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 01:00:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14175 states to 14175 states and 41887 transitions. [2023-11-12 01:00:06,986 INFO L78 Accepts]: Start accepts. Automaton has 14175 states and 41887 transitions. Word has length 20 [2023-11-12 01:00:06,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:06,987 INFO L495 AbstractCegarLoop]: Abstraction has 14175 states and 41887 transitions. [2023-11-12 01:00:06,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 01:00:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 14175 states and 41887 transitions. [2023-11-12 01:00:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 01:00:06,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:06,990 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:06,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 01:00:07,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 01:00:07,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 01:00:07,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1970679385, now seen corresponding path program 1 times [2023-11-12 01:00:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:07,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802837668] [2023-11-12 01:00:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-12 01:00:07,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:07,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802837668] [2023-11-12 01:00:07,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802837668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:07,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:07,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:07,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684151306] [2023-11-12 01:00:07,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:07,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:07,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:07,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:07,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:07,278 INFO L87 Difference]: Start difference. First operand 14175 states and 41887 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 01:00:07,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:07,494 INFO L93 Difference]: Finished difference Result 13680 states and 40344 transitions. [2023-11-12 01:00:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:07,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 20 [2023-11-12 01:00:07,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:07,547 INFO L225 Difference]: With dead ends: 13680 [2023-11-12 01:00:07,547 INFO L226 Difference]: Without dead ends: 13680 [2023-11-12 01:00:07,549 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 01:00:07,549 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 44 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:07,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 20 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13680 states. [2023-11-12 01:00:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13680 to 13680. [2023-11-12 01:00:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13680 states, 13469 states have (on average 2.9953225926200906) internal successors, (40344), 13679 states have internal predecessors, (40344), 0 states have call successors, (0), 0 states 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 01:00:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13680 states to 13680 states and 40344 transitions. [2023-11-12 01:00:08,088 INFO L78 Accepts]: Start accepts. Automaton has 13680 states and 40344 transitions. Word has length 20 [2023-11-12 01:00:08,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:08,089 INFO L495 AbstractCegarLoop]: Abstraction has 13680 states and 40344 transitions. [2023-11-12 01:00:08,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 01:00:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 13680 states and 40344 transitions. [2023-11-12 01:00:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 01:00:08,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:08,092 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:08,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 01:00:08,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 01:00:08,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:08,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1074407806, now seen corresponding path program 1 times [2023-11-12 01:00:08,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:08,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68691996] [2023-11-12 01:00:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:08,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 01:00:08,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:08,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68691996] [2023-11-12 01:00:08,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68691996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:00:08,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267989369] [2023-11-12 01:00:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:08,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:08,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:08,527 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:00:08,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 01:00:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:08,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 01:00:08,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:08,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-12 01:00:08,825 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 01:00:08,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-12 01:00:08,855 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-11-12 01:00:08,939 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-11-12 01:00:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 01:00:08,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:00:09,007 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_343 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_343) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 2147483647)) is different from false [2023-11-12 01:00:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-11-12 01:00:09,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267989369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:00:09,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1327280883] [2023-11-12 01:00:09,247 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$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 01:00:09,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:00:09,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-11-12 01:00:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884193532] [2023-11-12 01:00:09,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 01:00:09,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 01:00:09,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:09,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 01:00:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=144, Unknown=1, NotChecked=24, Total=210 [2023-11-12 01:00:09,251 INFO L87 Difference]: Start difference. First operand 13680 states and 40344 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 01:00:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:10,527 INFO L93 Difference]: Finished difference Result 15650 states and 45069 transitions. [2023-11-12 01:00:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:00:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 22 [2023-11-12 01:00:10,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:10,590 INFO L225 Difference]: With dead ends: 15650 [2023-11-12 01:00:10,591 INFO L226 Difference]: Without dead ends: 15650 [2023-11-12 01:00:10,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=202, Unknown=1, NotChecked=30, Total=306 [2023-11-12 01:00:10,592 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 476 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 240 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:10,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 165 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1040 Invalid, 0 Unknown, 240 Unchecked, 1.1s Time] [2023-11-12 01:00:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15650 states. [2023-11-12 01:00:10,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15650 to 12732. [2023-11-12 01:00:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12732 states, 12525 states have (on average 2.971816367265469) internal successors, (37222), 12731 states have internal predecessors, (37222), 0 states have call successors, (0), 0 states 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 01:00:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12732 states to 12732 states and 37222 transitions. [2023-11-12 01:00:11,016 INFO L78 Accepts]: Start accepts. Automaton has 12732 states and 37222 transitions. Word has length 22 [2023-11-12 01:00:11,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:11,016 INFO L495 AbstractCegarLoop]: Abstraction has 12732 states and 37222 transitions. [2023-11-12 01:00:11,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 01:00:11,017 INFO L276 IsEmpty]: Start isEmpty. Operand 12732 states and 37222 transitions. [2023-11-12 01:00:11,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 01:00:11,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:11,018 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 01:00:11,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 01:00:11,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b87bbdc-7630-48c7-a6cc-75c24a08ef02/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 01:00:11,225 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 01:00:11,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:11,225 INFO L85 PathProgramCache]: Analyzing trace with hash 257764922, now seen corresponding path program 1 times [2023-11-12 01:00:11,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:11,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474365839] [2023-11-12 01:00:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:11,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 01:00:11,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 01:00:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 01:00:11,296 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 01:00:11,296 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 01:00:11,296 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-12 01:00:11,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-11-12 01:00:11,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-11-12 01:00:11,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-11-12 01:00:11,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-11-12 01:00:11,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-11-12 01:00:11,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-11-12 01:00:11,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-11-12 01:00:11,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-11-12 01:00:11,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-11-12 01:00:11,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-11-12 01:00:11,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-11-12 01:00:11,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-11-12 01:00:11,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-11-12 01:00:11,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-11-12 01:00:11,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-11-12 01:00:11,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-11-12 01:00:11,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-11-12 01:00:11,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-11-12 01:00:11,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-11-12 01:00:11,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-11-12 01:00:11,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-11-12 01:00:11,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-11-12 01:00:11,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-11-12 01:00:11,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-11-12 01:00:11,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-11-12 01:00:11,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-11-12 01:00:11,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-11-12 01:00:11,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-11-12 01:00:11,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 01:00:11,302 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:11,303 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 01:00:11,304 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 01:00:11,355 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 01:00:11,361 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:00:11,362 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 373 places, 429 transitions, 885 flow [2023-11-12 01:00:11,362 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 373 places, 429 transitions, 885 flow [2023-11-12 01:00:11,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 429 transitions, 885 flow [2023-11-12 01:00:11,748 INFO L124 PetriNetUnfolderBase]: 117/809 cut-off events. [2023-11-12 01:00:11,748 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-12 01:00:11,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 809 events. 117/809 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3834 event pairs, 1 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 556. Up to 16 conditions per place. [2023-11-12 01:00:11,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 108654