./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ --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 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:22:38,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:22:38,946 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:22:38,952 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:22:38,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:22:38,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:22:38,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:22:38,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:22:38,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:22:38,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:22:38,998 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:22:38,998 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:22:38,999 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:22:38,999 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:22:39,000 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:22:39,001 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:22:39,001 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:22:39,002 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:22:39,002 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:22:39,003 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:22:39,004 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:22:39,004 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:22:39,005 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:22:39,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:22:39,006 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:22:39,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:22:39,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:22:39,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:22:39,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:22:39,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:22:39,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:22:39,022 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:22:39,023 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:22:39,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:22:39,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:22:39,024 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:22:39,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:22:39,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:22:39,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:39,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:22:39,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:22:39,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:22:39,029 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:22:39,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:22:39,030 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:22:39,030 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:22:39,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:22:39,031 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_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2023-11-19 05:22:39,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:22:39,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:22:39,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:22:39,445 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:22:39,445 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:22:39,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2023-11-19 05:22:42,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:43,142 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:43,143 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2023-11-19 05:22:43,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/data/785a3d39e/daa8bd362d3f4d86992aaf94b1bb5c39/FLAGeb0d1cdea [2023-11-19 05:22:43,201 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/data/785a3d39e/daa8bd362d3f4d86992aaf94b1bb5c39 [2023-11-19 05:22:43,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:43,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:43,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:43,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:43,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:43,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:43" (1/1) ... [2023-11-19 05:22:43,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106f9b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:43, skipping insertion in model container [2023-11-19 05:22:43,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:43" (1/1) ... [2023-11-19 05:22:43,317 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:44,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:44,195 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:22:44,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:44,458 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:22:44,458 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:22:44,458 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:22:44,459 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:22:44,467 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:22:44,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44 WrapperNode [2023-11-19 05:22:44,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:44,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:44,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:22:44,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:22:44,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,600 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,702 INFO L138 Inliner]: procedures = 524, calls = 69, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 132 [2023-11-19 05:22:44,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:44,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:22:44,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:22:44,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:22:44,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,727 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:22:44,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:22:44,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:22:44,814 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:22:44,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:44,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:44,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:22:44,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:22:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2023-11-19 05:22:44,905 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2023-11-19 05:22:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-19 05:22:44,907 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2023-11-19 05:22:44,907 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2023-11-19 05:22:44,907 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 05:22:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:22:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:22:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 05:22:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:22:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:22:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:22:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-19 05:22:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:22:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-11-19 05:22:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 05:22:44,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:22:44,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:22:44,914 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:22:45,227 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:22:45,230 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:22:45,643 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:22:45,658 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:22:45,658 INFO L302 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-19 05:22:45,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:45 BoogieIcfgContainer [2023-11-19 05:22:45,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:22:45,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:22:45,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:22:45,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:22:45,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:43" (1/3) ... [2023-11-19 05:22:45,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c33dc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:45, skipping insertion in model container [2023-11-19 05:22:45,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (2/3) ... [2023-11-19 05:22:45,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c33dc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:45, skipping insertion in model container [2023-11-19 05:22:45,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:45" (3/3) ... [2023-11-19 05:22:45,685 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2023-11-19 05:22:45,695 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:22:45,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:22:45,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 05:22:45,707 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:22:45,808 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 05:22:45,855 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:22:45,877 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 251 transitions, 516 flow [2023-11-19 05:22:45,883 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 251 transitions, 516 flow [2023-11-19 05:22:45,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 251 transitions, 516 flow [2023-11-19 05:22:45,998 INFO L124 PetriNetUnfolderBase]: 32/249 cut-off events. [2023-11-19 05:22:45,999 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 05:22:46,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 249 events. 32/249 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 567 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 150. Up to 5 conditions per place. [2023-11-19 05:22:46,022 INFO L119 LiptonReduction]: Number of co-enabled transitions 13862 [2023-11-19 05:23:15,536 INFO L134 LiptonReduction]: Checked pairs total: 13501 [2023-11-19 05:23:15,536 INFO L136 LiptonReduction]: Total number of compositions: 298 [2023-11-19 05:23:15,546 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 56 transitions, 126 flow [2023-11-19 05:23:15,623 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 358 states, 332 states have (on average 4.445783132530121) internal successors, (1476), 357 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:15,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:23:15,655 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;@411ecfc1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:23:15,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-19 05:23:15,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 332 states have (on average 4.445783132530121) internal successors, (1476), 357 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-19 05:23:15,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:15,668 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-19 05:23:15,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:15,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1075, now seen corresponding path program 1 times [2023-11-19 05:23:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:15,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438778058] [2023-11-19 05:23:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:15,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:16,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:16,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438778058] [2023-11-19 05:23:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438778058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:16,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:16,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 05:23:16,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792154954] [2023-11-19 05:23:16,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:16,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:23:16,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:16,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:23:16,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:23:16,066 INFO L87 Difference]: Start difference. First operand has 358 states, 332 states have (on average 4.445783132530121) internal successors, (1476), 357 states have internal predecessors, (1476), 0 states have call successors, (0), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:16,199 INFO L93 Difference]: Finished difference Result 225 states and 625 transitions. [2023-11-19 05:23:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:23:16,203 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2023-11-19 05:23:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:16,229 INFO L225 Difference]: With dead ends: 225 [2023-11-19 05:23:16,229 INFO L226 Difference]: Without dead ends: 219 [2023-11-19 05:23:16,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:23:16,237 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:16,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:16,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-19 05:23:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-11-19 05:23:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 172 states have (on average 3.552325581395349) internal successors, (611), 218 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 611 transitions. [2023-11-19 05:23:16,327 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 611 transitions. Word has length 1 [2023-11-19 05:23:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:16,328 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 611 transitions. [2023-11-19 05:23:16,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 611 transitions. [2023-11-19 05:23:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:23:16,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:16,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:23:16,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:23:16,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:16,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:16,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1017843150, now seen corresponding path program 1 times [2023-11-19 05:23:16,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:16,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919891472] [2023-11-19 05:23:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:16,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:16,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:16,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919891472] [2023-11-19 05:23:16,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919891472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:16,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:16,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:23:16,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703801887] [2023-11-19 05:23:16,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:16,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:16,624 INFO L87 Difference]: Start difference. First operand 219 states and 611 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:16,745 INFO L93 Difference]: Finished difference Result 308 states and 912 transitions. [2023-11-19 05:23:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:16,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-19 05:23:16,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:16,752 INFO L225 Difference]: With dead ends: 308 [2023-11-19 05:23:16,752 INFO L226 Difference]: Without dead ends: 308 [2023-11-19 05:23:16,752 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 [2023-11-19 05:23:16,754 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:16,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-19 05:23:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 287. [2023-11-19 05:23:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 240 states have (on average 3.7333333333333334) internal successors, (896), 286 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:16,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 896 transitions. [2023-11-19 05:23:16,787 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 896 transitions. Word has length 5 [2023-11-19 05:23:16,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:16,788 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 896 transitions. [2023-11-19 05:23:16,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:16,789 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 896 transitions. [2023-11-19 05:23:16,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:23:16,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:16,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:23:16,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:23:16,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:16,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:16,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1017843151, now seen corresponding path program 1 times [2023-11-19 05:23:16,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:16,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232900424] [2023-11-19 05:23:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:16,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:16,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:16,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232900424] [2023-11-19 05:23:16,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232900424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:16,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:16,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:23:16,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817060959] [2023-11-19 05:23:16,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:16,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:16,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:16,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:16,969 INFO L87 Difference]: Start difference. First operand 287 states and 896 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:17,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:17,096 INFO L93 Difference]: Finished difference Result 294 states and 861 transitions. [2023-11-19 05:23:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:17,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-19 05:23:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:17,106 INFO L225 Difference]: With dead ends: 294 [2023-11-19 05:23:17,107 INFO L226 Difference]: Without dead ends: 294 [2023-11-19 05:23:17,108 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 [2023-11-19 05:23:17,112 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:17,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-19 05:23:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 284. [2023-11-19 05:23:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 237 states have (on average 3.5991561181434597) internal successors, (853), 283 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 853 transitions. [2023-11-19 05:23:17,162 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 853 transitions. Word has length 5 [2023-11-19 05:23:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:17,164 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 853 transitions. [2023-11-19 05:23:17,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:17,165 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 853 transitions. [2023-11-19 05:23:17,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:23:17,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:17,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:23:17,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:23:17,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:17,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:17,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1017843221, now seen corresponding path program 1 times [2023-11-19 05:23:17,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:17,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937284236] [2023-11-19 05:23:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:17,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:17,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:17,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937284236] [2023-11-19 05:23:17,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937284236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:17,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:17,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390787419] [2023-11-19 05:23:17,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:17,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:17,370 INFO L87 Difference]: Start difference. First operand 284 states and 853 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:17,502 INFO L93 Difference]: Finished difference Result 377 states and 1053 transitions. [2023-11-19 05:23:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-19 05:23:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:17,510 INFO L225 Difference]: With dead ends: 377 [2023-11-19 05:23:17,511 INFO L226 Difference]: Without dead ends: 377 [2023-11-19 05:23:17,512 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 [2023-11-19 05:23:17,518 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:17,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-19 05:23:17,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 317. [2023-11-19 05:23:17,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 270 states have (on average 3.533333333333333) internal successors, (954), 316 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 954 transitions. [2023-11-19 05:23:17,542 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 954 transitions. Word has length 5 [2023-11-19 05:23:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:17,542 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 954 transitions. [2023-11-19 05:23:17,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 954 transitions. [2023-11-19 05:23:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:23:17,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:17,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:23:17,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:23:17,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:17,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1488369678, now seen corresponding path program 1 times [2023-11-19 05:23:17,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:17,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264407381] [2023-11-19 05:23:17,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:17,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:17,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:17,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264407381] [2023-11-19 05:23:17,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264407381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:17,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664388188] [2023-11-19 05:23:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:17,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:17,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:17,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:17,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:23:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:17,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:23:17,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:18,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:18,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664388188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [532319596] [2023-11-19 05:23:18,081 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2023-11-19 05:23:18,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:18,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 05:23:18,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532513620] [2023-11-19 05:23:18,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:18,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:23:18,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:23:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:23:18,086 INFO L87 Difference]: Start difference. First operand 317 states and 954 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:18,371 INFO L93 Difference]: Finished difference Result 734 states and 2288 transitions. [2023-11-19 05:23:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:23:18,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 [2023-11-19 05:23:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:18,381 INFO L225 Difference]: With dead ends: 734 [2023-11-19 05:23:18,382 INFO L226 Difference]: Without dead ends: 734 [2023-11-19 05:23:18,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:23:18,384 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:18,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:23:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-11-19 05:23:18,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 588. [2023-11-19 05:23:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 541 states have (on average 3.844731977818854) internal successors, (2080), 587 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 2080 transitions. [2023-11-19 05:23:18,425 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 2080 transitions. Word has length 6 [2023-11-19 05:23:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:18,425 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 2080 transitions. [2023-11-19 05:23:18,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 2080 transitions. [2023-11-19 05:23:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:23:18,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:18,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:23:18,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:18,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:18,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:18,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:18,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1488369679, now seen corresponding path program 1 times [2023-11-19 05:23:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:18,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716906270] [2023-11-19 05:23:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:18,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:18,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716906270] [2023-11-19 05:23:18,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716906270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:18,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:18,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070112959] [2023-11-19 05:23:18,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:18,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:23:18,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:18,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:23:18,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:23:18,807 INFO L87 Difference]: Start difference. First operand 588 states and 2080 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2023-11-19 05:23:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:18,929 INFO L93 Difference]: Finished difference Result 512 states and 1623 transitions. [2023-11-19 05:23:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:23:18,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:23:18,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:18,936 INFO L225 Difference]: With dead ends: 512 [2023-11-19 05:23:18,936 INFO L226 Difference]: Without dead ends: 512 [2023-11-19 05:23:18,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:23:18,938 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:18,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-19 05:23:18,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 485. [2023-11-19 05:23:18,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 457 states have (on average 3.437636761487965) internal successors, (1571), 484 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:18,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1571 transitions. [2023-11-19 05:23:18,964 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1571 transitions. Word has length 6 [2023-11-19 05:23:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:18,965 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 1571 transitions. [2023-11-19 05:23:18,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2023-11-19 05:23:18,965 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1571 transitions. [2023-11-19 05:23:18,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:23:18,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:18,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:23:18,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:23:18,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:18,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:18,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1488369749, now seen corresponding path program 1 times [2023-11-19 05:23:18,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:18,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633798041] [2023-11-19 05:23:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:18,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:19,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633798041] [2023-11-19 05:23:19,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633798041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:19,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:19,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969125065] [2023-11-19 05:23:19,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:19,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:19,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:19,064 INFO L87 Difference]: Start difference. First operand 485 states and 1571 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) [2023-11-19 05:23:19,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:19,173 INFO L93 Difference]: Finished difference Result 474 states and 1445 transitions. [2023-11-19 05:23:19,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:19,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:23:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:19,180 INFO L225 Difference]: With dead ends: 474 [2023-11-19 05:23:19,180 INFO L226 Difference]: Without dead ends: 474 [2023-11-19 05:23:19,181 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 [2023-11-19 05:23:19,182 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:19,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:19,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-11-19 05:23:19,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 447. [2023-11-19 05:23:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 430 states have (on average 3.23953488372093) internal successors, (1393), 446 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1393 transitions. [2023-11-19 05:23:19,207 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1393 transitions. Word has length 6 [2023-11-19 05:23:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:19,208 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 1393 transitions. [2023-11-19 05:23:19,208 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) [2023-11-19 05:23:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1393 transitions. [2023-11-19 05:23:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:23:19,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:19,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:23:19,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:23:19,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:19,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:19,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1490662693, now seen corresponding path program 1 times [2023-11-19 05:23:19,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:19,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229681981] [2023-11-19 05:23:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:19,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:19,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:19,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229681981] [2023-11-19 05:23:19,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229681981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:19,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:19,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:19,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751442492] [2023-11-19 05:23:19,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:19,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:19,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:19,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:19,313 INFO L87 Difference]: Start difference. First operand 447 states and 1393 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) [2023-11-19 05:23:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:19,422 INFO L93 Difference]: Finished difference Result 676 states and 2139 transitions. [2023-11-19 05:23:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:23:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:19,429 INFO L225 Difference]: With dead ends: 676 [2023-11-19 05:23:19,430 INFO L226 Difference]: Without dead ends: 676 [2023-11-19 05:23:19,430 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 [2023-11-19 05:23:19,431 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:19,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:19,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-11-19 05:23:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 563. [2023-11-19 05:23:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 546 states have (on average 3.509157509157509) internal successors, (1916), 562 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1916 transitions. [2023-11-19 05:23:19,464 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 1916 transitions. Word has length 6 [2023-11-19 05:23:19,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:19,465 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 1916 transitions. [2023-11-19 05:23:19,465 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) [2023-11-19 05:23:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 1916 transitions. [2023-11-19 05:23:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:23:19,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:19,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:19,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:23:19,467 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:19,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:19,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1034095712, now seen corresponding path program 1 times [2023-11-19 05:23:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:19,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203416608] [2023-11-19 05:23:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:19,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:19,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:19,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203416608] [2023-11-19 05:23:19,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203416608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:19,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745576823] [2023-11-19 05:23:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:19,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:19,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:19,618 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:19,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:23:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:19,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:23:19,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:19,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:19,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745576823] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:19,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [129623232] [2023-11-19 05:23:19,861 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2023-11-19 05:23:19,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:19,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 05:23:19,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329214425] [2023-11-19 05:23:19,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:19,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:23:19,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:19,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:23:19,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:23:19,867 INFO L87 Difference]: Start difference. First operand 563 states and 1916 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:20,119 INFO L93 Difference]: Finished difference Result 1363 states and 4551 transitions. [2023-11-19 05:23:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:23:20,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 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 [2023-11-19 05:23:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:20,137 INFO L225 Difference]: With dead ends: 1363 [2023-11-19 05:23:20,137 INFO L226 Difference]: Without dead ends: 1363 [2023-11-19 05:23:20,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:23:20,139 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:20,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:23:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2023-11-19 05:23:20,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 911. [2023-11-19 05:23:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 894 states have (on average 4.092841163310962) internal successors, (3659), 910 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 3659 transitions. [2023-11-19 05:23:20,208 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 3659 transitions. Word has length 7 [2023-11-19 05:23:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:20,208 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 3659 transitions. [2023-11-19 05:23:20,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 3659 transitions. [2023-11-19 05:23:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:23:20,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:20,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:20,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:20,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:20,437 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:20,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:20,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1034095710, now seen corresponding path program 1 times [2023-11-19 05:23:20,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:20,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824070611] [2023-11-19 05:23:20,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:20,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:20,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:20,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824070611] [2023-11-19 05:23:20,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824070611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:20,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:20,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:20,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195058499] [2023-11-19 05:23:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:20,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:20,538 INFO L87 Difference]: Start difference. First operand 911 states and 3659 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) [2023-11-19 05:23:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:20,632 INFO L93 Difference]: Finished difference Result 858 states and 3313 transitions. [2023-11-19 05:23:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:20,633 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 7 [2023-11-19 05:23:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:20,644 INFO L225 Difference]: With dead ends: 858 [2023-11-19 05:23:20,645 INFO L226 Difference]: Without dead ends: 858 [2023-11-19 05:23:20,645 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 [2023-11-19 05:23:20,646 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:20,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-11-19 05:23:20,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2023-11-19 05:23:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 845 states have (on average 3.9207100591715975) internal successors, (3313), 857 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 3313 transitions. [2023-11-19 05:23:20,697 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 3313 transitions. Word has length 7 [2023-11-19 05:23:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:20,697 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 3313 transitions. [2023-11-19 05:23:20,697 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) [2023-11-19 05:23:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 3313 transitions. [2023-11-19 05:23:20,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:23:20,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:20,703 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-19 05:23:20,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:23:20,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:20,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:20,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1218208306, now seen corresponding path program 2 times [2023-11-19 05:23:20,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:20,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110444471] [2023-11-19 05:23:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:20,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:20,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:20,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110444471] [2023-11-19 05:23:20,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110444471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:20,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416964932] [2023-11-19 05:23:20,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:23:20,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:20,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:20,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:20,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:23:21,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 05:23:21,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:23:21,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:23:21,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:21,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:21,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416964932] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:21,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [582843124] [2023-11-19 05:23:21,284 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2023-11-19 05:23:21,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:21,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 05:23:21,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639838404] [2023-11-19 05:23:21,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:21,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:23:21,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:21,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:23:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:23:21,288 INFO L87 Difference]: Start difference. First operand 858 states and 3313 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2023-11-19 05:23:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:21,734 INFO L93 Difference]: Finished difference Result 2231 states and 7856 transitions. [2023-11-19 05:23:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:23:21,735 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 9 [2023-11-19 05:23:21,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:21,763 INFO L225 Difference]: With dead ends: 2231 [2023-11-19 05:23:21,764 INFO L226 Difference]: Without dead ends: 2231 [2023-11-19 05:23:21,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:23:21,765 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 424 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:21,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 0 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:23:21,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2023-11-19 05:23:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1668. [2023-11-19 05:23:21,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1655 states have (on average 4.010271903323263) internal successors, (6637), 1667 states have internal predecessors, (6637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 6637 transitions. [2023-11-19 05:23:21,876 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 6637 transitions. Word has length 9 [2023-11-19 05:23:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:21,877 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 6637 transitions. [2023-11-19 05:23:21,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2023-11-19 05:23:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 6637 transitions. [2023-11-19 05:23:21,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:23:21,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:21,880 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:21,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:22,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:22,101 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:22,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1056111589, now seen corresponding path program 2 times [2023-11-19 05:23:22,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:22,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666664619] [2023-11-19 05:23:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:22,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:22,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666664619] [2023-11-19 05:23:22,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666664619] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411483419] [2023-11-19 05:23:22,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:23:22,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:22,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:22,327 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:22,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:23:22,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 05:23:22,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:23:22,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:23:22,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:22,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:22,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:22,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411483419] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:22,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [950270567] [2023-11-19 05:23:22,662 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2023-11-19 05:23:22,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:22,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 05:23:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27171398] [2023-11-19 05:23:22,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:22,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 05:23:22,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:22,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 05:23:22,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:23:22,666 INFO L87 Difference]: Start difference. First operand 1668 states and 6637 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 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) [2023-11-19 05:23:23,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:23,270 INFO L93 Difference]: Finished difference Result 5222 states and 17297 transitions. [2023-11-19 05:23:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:23:23,271 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 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 10 [2023-11-19 05:23:23,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:23,334 INFO L225 Difference]: With dead ends: 5222 [2023-11-19 05:23:23,335 INFO L226 Difference]: Without dead ends: 5222 [2023-11-19 05:23:23,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:23:23,336 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 210 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:23,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 0 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:23:23,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2023-11-19 05:23:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 3012. [2023-11-19 05:23:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 2999 states have (on average 4.303767922640881) internal successors, (12907), 3011 states have internal predecessors, (12907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 12907 transitions. [2023-11-19 05:23:23,549 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 12907 transitions. Word has length 10 [2023-11-19 05:23:23,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:23,550 INFO L495 AbstractCegarLoop]: Abstraction has 3012 states and 12907 transitions. [2023-11-19 05:23:23,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 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) [2023-11-19 05:23:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 12907 transitions. [2023-11-19 05:23:23,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:23:23,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:23,555 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2023-11-19 05:23:23,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:23,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 05:23:23,768 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:23,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2130802126, now seen corresponding path program 3 times [2023-11-19 05:23:23,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:23,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671898803] [2023-11-19 05:23:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:23,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:24,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:24,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671898803] [2023-11-19 05:23:24,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671898803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:24,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516594934] [2023-11-19 05:23:24,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:23:24,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:24,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:24,137 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:24,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:23:24,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:23:24,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:23:24,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:23:24,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:24,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516594934] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1487641092] [2023-11-19 05:23:24,783 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2023-11-19 05:23:24,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:24,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-19 05:23:24,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343605766] [2023-11-19 05:23:24,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:24,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 05:23:24,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:24,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 05:23:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-19 05:23:24,786 INFO L87 Difference]: Start difference. First operand 3012 states and 12907 transitions. Second operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:25,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:25,781 INFO L93 Difference]: Finished difference Result 8495 states and 31556 transitions. [2023-11-19 05:23:25,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 05:23:25,782 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2023-11-19 05:23:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:25,857 INFO L225 Difference]: With dead ends: 8495 [2023-11-19 05:23:25,857 INFO L226 Difference]: Without dead ends: 8495 [2023-11-19 05:23:25,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-19 05:23:25,858 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 893 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:25,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 0 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:23:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8495 states. [2023-11-19 05:23:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8495 to 5928. [2023-11-19 05:23:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5928 states, 5915 states have (on average 4.3650042265426885) internal successors, (25819), 5927 states have internal predecessors, (25819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5928 states to 5928 states and 25819 transitions. [2023-11-19 05:23:26,293 INFO L78 Accepts]: Start accepts. Automaton has 5928 states and 25819 transitions. Word has length 15 [2023-11-19 05:23:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:26,293 INFO L495 AbstractCegarLoop]: Abstraction has 5928 states and 25819 transitions. [2023-11-19 05:23:26,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states and 25819 transitions. [2023-11-19 05:23:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:23:26,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:26,300 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:26,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:26,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 05:23:26,516 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:26,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash 509432325, now seen corresponding path program 3 times [2023-11-19 05:23:26,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:26,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200070879] [2023-11-19 05:23:26,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:26,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:26,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:26,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200070879] [2023-11-19 05:23:26,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200070879] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:26,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694892019] [2023-11-19 05:23:26,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:23:26,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:26,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:26,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:26,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:23:27,148 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:23:27,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:23:27,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:23:27,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:27,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:27,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694892019] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1121482134] [2023-11-19 05:23:27,485 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2023-11-19 05:23:27,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:27,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-19 05:23:27,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162733350] [2023-11-19 05:23:27,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:27,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 05:23:27,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:27,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 05:23:27,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-19 05:23:27,491 INFO L87 Difference]: Start difference. First operand 5928 states and 25819 transitions. Second operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:28,631 INFO L93 Difference]: Finished difference Result 20822 states and 70049 transitions. [2023-11-19 05:23:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 05:23:28,632 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 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 16 [2023-11-19 05:23:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:28,788 INFO L225 Difference]: With dead ends: 20822 [2023-11-19 05:23:28,789 INFO L226 Difference]: Without dead ends: 20822 [2023-11-19 05:23:28,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-19 05:23:28,790 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 930 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:28,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 0 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:23:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20822 states. [2023-11-19 05:23:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20822 to 11208. [2023-11-19 05:23:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11208 states, 11195 states have (on average 4.545511389012952) internal successors, (50887), 11207 states have internal predecessors, (50887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11208 states to 11208 states and 50887 transitions. [2023-11-19 05:23:29,727 INFO L78 Accepts]: Start accepts. Automaton has 11208 states and 50887 transitions. Word has length 16 [2023-11-19 05:23:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:29,728 INFO L495 AbstractCegarLoop]: Abstraction has 11208 states and 50887 transitions. [2023-11-19 05:23:29,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 11208 states and 50887 transitions. [2023-11-19 05:23:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:23:29,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:29,754 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1] [2023-11-19 05:23:29,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 05:23:29,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:29,975 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 05:23:29,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:29,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1886856654, now seen corresponding path program 4 times [2023-11-19 05:23:29,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:29,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984011656] [2023-11-19 05:23:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:29,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:31,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984011656] [2023-11-19 05:23:31,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984011656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860433475] [2023-11-19 05:23:31,038 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:23:31,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:31,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:31,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d408b3-903f-4106-8d7c-0bcefacc53bb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process