./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh --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 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:38:49,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:38:49,896 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 18:38:49,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:38:49,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:38:49,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:38:49,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:38:49,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:38:49,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:38:49,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:38:49,932 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:38:49,933 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:38:49,933 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:38:49,934 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:38:49,934 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:38:49,935 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:38:49,935 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:38:49,936 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:38:49,936 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:38:49,937 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:38:49,937 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:38:49,938 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:38:49,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:38:49,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:38:49,940 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:38:49,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:38:49,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:38:49,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:38:49,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:38:49,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:38:49,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:38:49,943 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 18:38:49,943 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:38:49,943 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:38:49,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:38:49,944 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:38:49,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:38:49,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:38:49,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:38:49,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:38:49,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:38:49,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:38:49,946 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:38:49,946 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:38:49,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:38:49,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:38:49,946 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:38:49,947 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:38:49,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:38:49,947 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_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 [2023-12-02 18:38:50,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:38:50,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:38:50,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:38:50,208 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:38:50,209 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:38:50,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-12-02 18:38:53,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:38:53,248 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:38:53,248 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-12-02 18:38:53,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/data/689efe485/4c80f886d1694a3aa64e69b4f0141295/FLAGfcb80bac6 [2023-12-02 18:38:53,268 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/data/689efe485/4c80f886d1694a3aa64e69b4f0141295 [2023-12-02 18:38:53,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:38:53,273 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:38:53,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:38:53,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:38:53,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:38:53,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d2fe47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53, skipping insertion in model container [2023-12-02 18:38:53,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:38:53,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:38:53,483 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:38:53,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:38:53,528 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:38:53,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53 WrapperNode [2023-12-02 18:38:53,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:38:53,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:38:53,530 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:38:53,530 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:38:53,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,583 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 367 [2023-12-02 18:38:53,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:38:53,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:38:53,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:38:53,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:38:53,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:38:53,634 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:38:53,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:38:53,634 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:38:53,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (1/1) ... [2023-12-02 18:38:53,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:38:53,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:38:53,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:38:53,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:38:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:38:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:38:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:38:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:38:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 18:38:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 18:38:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 18:38:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 18:38:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 18:38:53,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 18:38:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:38:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:38:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:38:53,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:38:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:38:53,713 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 18:38:53,817 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:38:53,819 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:38:54,362 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:38:54,692 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:38:54,692 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-02 18:38:54,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:38:54 BoogieIcfgContainer [2023-12-02 18:38:54,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:38:54,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:38:54,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:38:54,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:38:54,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:38:53" (1/3) ... [2023-12-02 18:38:54,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47762445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:38:54, skipping insertion in model container [2023-12-02 18:38:54,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:38:53" (2/3) ... [2023-12-02 18:38:54,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47762445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:38:54, skipping insertion in model container [2023-12-02 18:38:54,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:38:54" (3/3) ... [2023-12-02 18:38:54,703 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2023-12-02 18:38:54,712 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 18:38:54,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:38:54,722 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-12-02 18:38:54,723 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 18:38:54,811 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-02 18:38:54,863 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 139 places, 145 transitions, 311 flow [2023-12-02 18:38:56,310 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44272 states, 43046 states have (on average 3.8378478836593413) internal successors, (165204), 44271 states have internal predecessors, (165204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:38:56,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:38:56,335 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;@43354667, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:38:56,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-12-02 18:38:56,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 44272 states, 43046 states have (on average 3.8378478836593413) internal successors, (165204), 44271 states have internal predecessors, (165204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:38:56,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 18:38:56,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:38:56,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 18:38:56,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:38:56,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:38:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1108872, now seen corresponding path program 1 times [2023-12-02 18:38:56,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:38:56,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217540098] [2023-12-02 18:38:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:38:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:38:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:38:56,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:38:56,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217540098] [2023-12-02 18:38:56,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217540098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:38:56,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:38:56,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:38:56,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155768000] [2023-12-02 18:38:56,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:38:56,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:38:56,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:38:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:38:56,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:38:56,920 INFO L87 Difference]: Start difference. First operand has 44272 states, 43046 states have (on average 3.8378478836593413) internal successors, (165204), 44271 states have internal predecessors, (165204), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:38:58,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:38:58,153 INFO L93 Difference]: Finished difference Result 44281 states and 165216 transitions. [2023-12-02 18:38:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:38:58,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 18:38:58,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:38:58,652 INFO L225 Difference]: With dead ends: 44281 [2023-12-02 18:38:58,653 INFO L226 Difference]: Without dead ends: 44281 [2023-12-02 18:38:58,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:38:58,657 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 9 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:38:58,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 237 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:38:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44281 states. [2023-12-02 18:39:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44281 to 44281. [2023-12-02 18:39:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44281 states, 43055 states have (on average 3.837324352572291) internal successors, (165216), 44280 states have internal predecessors, (165216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44281 states to 44281 states and 165216 transitions. [2023-12-02 18:39:01,174 INFO L78 Accepts]: Start accepts. Automaton has 44281 states and 165216 transitions. Word has length 3 [2023-12-02 18:39:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:01,174 INFO L495 AbstractCegarLoop]: Abstraction has 44281 states and 165216 transitions. [2023-12-02 18:39:01,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:01,174 INFO L276 IsEmpty]: Start isEmpty. Operand 44281 states and 165216 transitions. [2023-12-02 18:39:01,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 18:39:01,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:01,175 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-12-02 18:39:01,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:39:01,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:01,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1324198758, now seen corresponding path program 1 times [2023-12-02 18:39:01,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:01,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687783224] [2023-12-02 18:39:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:01,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:01,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687783224] [2023-12-02 18:39:01,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687783224] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515445753] [2023-12-02 18:39:01,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:01,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:39:01,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:39:01,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:39:01,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:39:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:01,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:39:01,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:01,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:39:01,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515445753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:39:01,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:39:01,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-02 18:39:01,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760553960] [2023-12-02 18:39:01,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:39:01,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:39:01,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:01,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:39:01,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:39:01,485 INFO L87 Difference]: Start difference. First operand 44281 states and 165216 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:02,559 INFO L93 Difference]: Finished difference Result 44278 states and 165213 transitions. [2023-12-02 18:39:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:39:02,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 18:39:02,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:02,857 INFO L225 Difference]: With dead ends: 44278 [2023-12-02 18:39:02,857 INFO L226 Difference]: Without dead ends: 44278 [2023-12-02 18:39:02,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:39:02,859 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 29 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:02,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 222 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:39:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44278 states. [2023-12-02 18:39:04,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44278 to 44278. [2023-12-02 18:39:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44278 states, 43055 states have (on average 3.8372546742538614) internal successors, (165213), 44277 states have internal predecessors, (165213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44278 states to 44278 states and 165213 transitions. [2023-12-02 18:39:04,489 INFO L78 Accepts]: Start accepts. Automaton has 44278 states and 165213 transitions. Word has length 6 [2023-12-02 18:39:04,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:04,489 INFO L495 AbstractCegarLoop]: Abstraction has 44278 states and 165213 transitions. [2023-12-02 18:39:04,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 44278 states and 165213 transitions. [2023-12-02 18:39:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 18:39:04,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:04,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-12-02 18:39:04,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:39:04,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 18:39:04,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:04,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:04,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1899512604, now seen corresponding path program 1 times [2023-12-02 18:39:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:04,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532893643] [2023-12-02 18:39:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:04,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:04,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:04,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532893643] [2023-12-02 18:39:04,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532893643] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:04,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096807050] [2023-12-02 18:39:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:04,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:39:04,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:39:04,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:39:04,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:39:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:04,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:39:04,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:04,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:04,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096807050] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:39:04,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [267613428] [2023-12-02 18:39:04,992 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java: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) [2023-12-02 18:39:04,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:39:04,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-12-02 18:39:04,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649941108] [2023-12-02 18:39:04,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:39:04,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:39:04,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:04,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:39:04,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:39:04,996 INFO L87 Difference]: Start difference. First operand 44278 states and 165213 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) [2023-12-02 18:39:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:05,767 INFO L93 Difference]: Finished difference Result 44305 states and 165249 transitions. [2023-12-02 18:39:05,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:39:05,768 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 7 [2023-12-02 18:39:05,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:06,391 INFO L225 Difference]: With dead ends: 44305 [2023-12-02 18:39:06,392 INFO L226 Difference]: Without dead ends: 44305 [2023-12-02 18:39:06,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-02 18:39:06,393 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 50 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:06,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 533 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:39:06,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44305 states. [2023-12-02 18:39:07,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44305 to 44305. [2023-12-02 18:39:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44305 states, 43082 states have (on average 3.835685437073488) internal successors, (165249), 44304 states have internal predecessors, (165249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:07,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44305 states to 44305 states and 165249 transitions. [2023-12-02 18:39:07,805 INFO L78 Accepts]: Start accepts. Automaton has 44305 states and 165249 transitions. Word has length 7 [2023-12-02 18:39:07,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:07,805 INFO L495 AbstractCegarLoop]: Abstraction has 44305 states and 165249 transitions. [2023-12-02 18:39:07,806 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) [2023-12-02 18:39:07,806 INFO L276 IsEmpty]: Start isEmpty. Operand 44305 states and 165249 transitions. [2023-12-02 18:39:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 18:39:07,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:07,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:07,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:39:08,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-02 18:39:08,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:08,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:08,008 INFO L85 PathProgramCache]: Analyzing trace with hash 350674505, now seen corresponding path program 1 times [2023-12-02 18:39:08,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:08,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333723897] [2023-12-02 18:39:08,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:08,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:08,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:08,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333723897] [2023-12-02 18:39:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333723897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:39:08,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:39:08,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:39:08,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468500864] [2023-12-02 18:39:08,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:39:08,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:39:08,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:08,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:39:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:39:08,086 INFO L87 Difference]: Start difference. First operand 44305 states and 165249 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:08,960 INFO L93 Difference]: Finished difference Result 59041 states and 221211 transitions. [2023-12-02 18:39:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:39:08,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-02 18:39:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:09,357 INFO L225 Difference]: With dead ends: 59041 [2023-12-02 18:39:09,358 INFO L226 Difference]: Without dead ends: 59041 [2023-12-02 18:39:09,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:39:09,359 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 158 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:09,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 350 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:39:09,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59041 states. [2023-12-02 18:39:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59041 to 49831. [2023-12-02 18:39:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49831 states, 48743 states have (on average 3.8443673963440905) internal successors, (187386), 49830 states have internal predecessors, (187386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:11,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49831 states to 49831 states and 187386 transitions. [2023-12-02 18:39:11,157 INFO L78 Accepts]: Start accepts. Automaton has 49831 states and 187386 transitions. Word has length 9 [2023-12-02 18:39:11,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:11,157 INFO L495 AbstractCegarLoop]: Abstraction has 49831 states and 187386 transitions. [2023-12-02 18:39:11,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:11,157 INFO L276 IsEmpty]: Start isEmpty. Operand 49831 states and 187386 transitions. [2023-12-02 18:39:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 18:39:11,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:11,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:11,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 18:39:11,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:11,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2013990999, now seen corresponding path program 1 times [2023-12-02 18:39:11,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:11,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634654884] [2023-12-02 18:39:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:11,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:11,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:11,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634654884] [2023-12-02 18:39:11,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634654884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:39:11,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:39:11,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:39:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764400369] [2023-12-02 18:39:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:39:11,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:39:11,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:11,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:39:11,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:39:11,254 INFO L87 Difference]: Start difference. First operand 49831 states and 187386 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:12,089 INFO L93 Difference]: Finished difference Result 57279 states and 211787 transitions. [2023-12-02 18:39:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:39:12,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 18:39:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:12,417 INFO L225 Difference]: With dead ends: 57279 [2023-12-02 18:39:12,418 INFO L226 Difference]: Without dead ends: 57279 [2023-12-02 18:39:12,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:39:12,419 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 194 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:12,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 389 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:39:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57279 states. [2023-12-02 18:39:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57279 to 53546. [2023-12-02 18:39:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53546 states, 52458 states have (on average 3.8308551603187313) internal successors, (200959), 53545 states have internal predecessors, (200959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53546 states to 53546 states and 200959 transitions. [2023-12-02 18:39:14,657 INFO L78 Accepts]: Start accepts. Automaton has 53546 states and 200959 transitions. Word has length 10 [2023-12-02 18:39:14,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:14,658 INFO L495 AbstractCegarLoop]: Abstraction has 53546 states and 200959 transitions. [2023-12-02 18:39:14,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 53546 states and 200959 transitions. [2023-12-02 18:39:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 18:39:14,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:14,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:14,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 18:39:14,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:14,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash 19716819, now seen corresponding path program 1 times [2023-12-02 18:39:14,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:14,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102340965] [2023-12-02 18:39:14,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:14,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:14,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102340965] [2023-12-02 18:39:14,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102340965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:39:14,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:39:14,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:39:14,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303868774] [2023-12-02 18:39:14,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:39:14,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:39:14,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:14,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:39:14,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:39:14,787 INFO L87 Difference]: Start difference. First operand 53546 states and 200959 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:15,507 INFO L93 Difference]: Finished difference Result 72090 states and 271421 transitions. [2023-12-02 18:39:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:39:15,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 18:39:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:15,815 INFO L225 Difference]: With dead ends: 72090 [2023-12-02 18:39:15,815 INFO L226 Difference]: Without dead ends: 72090 [2023-12-02 18:39:15,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:39:15,816 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 167 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:15,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 276 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:39:16,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72090 states. [2023-12-02 18:39:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72090 to 60500. [2023-12-02 18:39:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60500 states, 59532 states have (on average 3.8438318887321103) internal successors, (228831), 60499 states have internal predecessors, (228831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60500 states to 60500 states and 228831 transitions. [2023-12-02 18:39:17,979 INFO L78 Accepts]: Start accepts. Automaton has 60500 states and 228831 transitions. Word has length 11 [2023-12-02 18:39:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:17,979 INFO L495 AbstractCegarLoop]: Abstraction has 60500 states and 228831 transitions. [2023-12-02 18:39:17,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 60500 states and 228831 transitions. [2023-12-02 18:39:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 18:39:17,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:17,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:17,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 18:39:17,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:17,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash 611222648, now seen corresponding path program 1 times [2023-12-02 18:39:17,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:17,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268860562] [2023-12-02 18:39:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:17,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:18,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:18,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268860562] [2023-12-02 18:39:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268860562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:39:18,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:39:18,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:39:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971837553] [2023-12-02 18:39:18,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:39:18,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:39:18,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:18,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:39:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:39:18,088 INFO L87 Difference]: Start difference. First operand 60500 states and 228831 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) [2023-12-02 18:39:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:19,061 INFO L93 Difference]: Finished difference Result 57393 states and 216363 transitions. [2023-12-02 18:39:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:39:19,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 12 [2023-12-02 18:39:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:19,343 INFO L225 Difference]: With dead ends: 57393 [2023-12-02 18:39:19,343 INFO L226 Difference]: Without dead ends: 57393 [2023-12-02 18:39:19,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:39:19,345 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 146 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:19,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 338 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:39:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57393 states. [2023-12-02 18:39:20,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57393 to 57138. [2023-12-02 18:39:20,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57138 states, 56170 states have (on average 3.843492967776393) internal successors, (215889), 57137 states have internal predecessors, (215889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57138 states to 57138 states and 215889 transitions. [2023-12-02 18:39:21,477 INFO L78 Accepts]: Start accepts. Automaton has 57138 states and 215889 transitions. Word has length 12 [2023-12-02 18:39:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:21,477 INFO L495 AbstractCegarLoop]: Abstraction has 57138 states and 215889 transitions. [2023-12-02 18:39:21,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) [2023-12-02 18:39:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 57138 states and 215889 transitions. [2023-12-02 18:39:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 18:39:21,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:21,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:21,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 18:39:21,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:21,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:21,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1174582815, now seen corresponding path program 1 times [2023-12-02 18:39:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:21,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916731517] [2023-12-02 18:39:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:21,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:21,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916731517] [2023-12-02 18:39:21,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916731517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:39:21,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:39:21,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:39:21,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842419982] [2023-12-02 18:39:21,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:39:21,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:39:21,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:21,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:39:21,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:39:21,596 INFO L87 Difference]: Start difference. First operand 57138 states and 215889 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:22,366 INFO L93 Difference]: Finished difference Result 79954 states and 303061 transitions. [2023-12-02 18:39:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:39:22,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 18:39:22,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:22,718 INFO L225 Difference]: With dead ends: 79954 [2023-12-02 18:39:22,718 INFO L226 Difference]: Without dead ends: 79954 [2023-12-02 18:39:22,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:39:22,720 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 130 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:22,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 274 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:39:23,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79954 states. [2023-12-02 18:39:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79954 to 65694. [2023-12-02 18:39:24,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65694 states, 64854 states have (on average 3.8603786967650415) internal successors, (250361), 65693 states have internal predecessors, (250361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65694 states to 65694 states and 250361 transitions. [2023-12-02 18:39:25,115 INFO L78 Accepts]: Start accepts. Automaton has 65694 states and 250361 transitions. Word has length 13 [2023-12-02 18:39:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:25,115 INFO L495 AbstractCegarLoop]: Abstraction has 65694 states and 250361 transitions. [2023-12-02 18:39:25,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 65694 states and 250361 transitions. [2023-12-02 18:39:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 18:39:25,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:25,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:25,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 18:39:25,117 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:25,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2052327613, now seen corresponding path program 1 times [2023-12-02 18:39:25,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:25,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036617308] [2023-12-02 18:39:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:25,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:25,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:25,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036617308] [2023-12-02 18:39:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036617308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:39:25,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:39:25,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:39:25,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203764579] [2023-12-02 18:39:25,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:39:25,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:39:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:39:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:39:25,233 INFO L87 Difference]: Start difference. First operand 65694 states and 250361 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:26,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:26,240 INFO L93 Difference]: Finished difference Result 64893 states and 247749 transitions. [2023-12-02 18:39:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:39:26,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-12-02 18:39:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:26,517 INFO L225 Difference]: With dead ends: 64893 [2023-12-02 18:39:26,517 INFO L226 Difference]: Without dead ends: 64893 [2023-12-02 18:39:26,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:39:26,518 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 62 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:26,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 304 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:39:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64893 states. [2023-12-02 18:39:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64893 to 64868. [2023-12-02 18:39:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64868 states, 64028 states have (on average 3.8690104329355908) internal successors, (247725), 64867 states have internal predecessors, (247725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64868 states to 64868 states and 247725 transitions. [2023-12-02 18:39:28,426 INFO L78 Accepts]: Start accepts. Automaton has 64868 states and 247725 transitions. Word has length 14 [2023-12-02 18:39:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:28,426 INFO L495 AbstractCegarLoop]: Abstraction has 64868 states and 247725 transitions. [2023-12-02 18:39:28,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 64868 states and 247725 transitions. [2023-12-02 18:39:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 18:39:28,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:28,427 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1] [2023-12-02 18:39:28,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 18:39:28,428 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:28,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:28,428 INFO L85 PathProgramCache]: Analyzing trace with hash -258134930, now seen corresponding path program 2 times [2023-12-02 18:39:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:28,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028111546] [2023-12-02 18:39:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:28,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:28,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:28,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028111546] [2023-12-02 18:39:28,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028111546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:28,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932671593] [2023-12-02 18:39:28,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:39:28,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:39:28,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:39:28,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:39:28,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:39:29,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 18:39:29,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:39:29,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:39:29,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 18:39:29,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 18:39:29,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932671593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:39:29,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1879030772] [2023-12-02 18:39:29,193 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java: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) [2023-12-02 18:39:29,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:39:29,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-12-02 18:39:29,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839979873] [2023-12-02 18:39:29,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:39:29,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 18:39:29,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 18:39:29,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-02 18:39:29,196 INFO L87 Difference]: Start difference. First operand 64868 states and 247725 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:30,249 INFO L93 Difference]: Finished difference Result 64882 states and 247744 transitions. [2023-12-02 18:39:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 18:39:30,250 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2023-12-02 18:39:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:30,524 INFO L225 Difference]: With dead ends: 64882 [2023-12-02 18:39:30,524 INFO L226 Difference]: Without dead ends: 64882 [2023-12-02 18:39:30,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2023-12-02 18:39:30,526 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 70 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:30,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 500 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:39:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64882 states. [2023-12-02 18:39:32,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64882 to 64868. [2023-12-02 18:39:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64868 states, 64029 states have (on average 3.868965624951194) internal successors, (247726), 64867 states have internal predecessors, (247726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64868 states to 64868 states and 247726 transitions. [2023-12-02 18:39:33,197 INFO L78 Accepts]: Start accepts. Automaton has 64868 states and 247726 transitions. Word has length 16 [2023-12-02 18:39:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:33,197 INFO L495 AbstractCegarLoop]: Abstraction has 64868 states and 247726 transitions. [2023-12-02 18:39:33,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 64868 states and 247726 transitions. [2023-12-02 18:39:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 18:39:33,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:33,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:33,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:39:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 18:39:33,399 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:33,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash 680956115, now seen corresponding path program 1 times [2023-12-02 18:39:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71978027] [2023-12-02 18:39:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:33,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:34,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:34,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71978027] [2023-12-02 18:39:34,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71978027] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:34,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535258541] [2023-12-02 18:39:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:34,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:39:34,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:39:34,039 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:39:34,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:39:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:34,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 18:39:34,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:34,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 18:39:34,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:34,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:34,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:34,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:34,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:34,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:34,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:34,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:34,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-12-02 18:39:34,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:34,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:34,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:39:34,443 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 18:39:34,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 18:39:34,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:39:34,543 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:39:34,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:39:34,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:39:34,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:34,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:39:34,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 18:39:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:34,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:34,728 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_240 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_240) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-12-02 18:39:35,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:39:35,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-12-02 18:39:35,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:39:35,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 137 [2023-12-02 18:39:35,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 116 [2023-12-02 18:39:35,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 112 [2023-12-02 18:39:35,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2023-12-02 18:39:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-12-02 18:39:35,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535258541] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:39:35,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1297640949] [2023-12-02 18:39:35,342 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) [2023-12-02 18:39:35,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:39:35,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-02 18:39:35,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109155985] [2023-12-02 18:39:35,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:39:35,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 18:39:35,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:35,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 18:39:35,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=492, Unknown=10, NotChecked=46, Total=650 [2023-12-02 18:39:35,345 INFO L87 Difference]: Start difference. First operand 64868 states and 247726 transitions. Second operand has 26 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:37,751 INFO L93 Difference]: Finished difference Result 119967 states and 460537 transitions. [2023-12-02 18:39:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:39:37,752 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 18:39:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:38,314 INFO L225 Difference]: With dead ends: 119967 [2023-12-02 18:39:38,315 INFO L226 Difference]: Without dead ends: 119967 [2023-12-02 18:39:38,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=754, Unknown=10, NotChecked=58, Total=992 [2023-12-02 18:39:38,619 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 338 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:38,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1688 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1480 Invalid, 0 Unknown, 301 Unchecked, 1.2s Time] [2023-12-02 18:39:38,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119967 states. [2023-12-02 18:39:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119967 to 72051. [2023-12-02 18:39:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72051 states, 71212 states have (on average 3.8889091726113576) internal successors, (276937), 72050 states have internal predecessors, (276937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72051 states to 72051 states and 276937 transitions. [2023-12-02 18:39:41,325 INFO L78 Accepts]: Start accepts. Automaton has 72051 states and 276937 transitions. Word has length 19 [2023-12-02 18:39:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:41,326 INFO L495 AbstractCegarLoop]: Abstraction has 72051 states and 276937 transitions. [2023-12-02 18:39:41,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 72051 states and 276937 transitions. [2023-12-02 18:39:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 18:39:41,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:41,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:41,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 18:39:41,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 18:39:41,527 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:41,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:41,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1867456842, now seen corresponding path program 1 times [2023-12-02 18:39:41,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:41,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101304128] [2023-12-02 18:39:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:41,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:42,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:42,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101304128] [2023-12-02 18:39:42,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101304128] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:42,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817496614] [2023-12-02 18:39:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:42,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:39:42,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:39:42,526 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:39:42,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:39:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:42,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 18:39:42,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:42,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-12-02 18:39:42,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 18:39:42,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-12-02 18:39:42,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:42,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:42,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:42,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:42,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:42,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:42,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:39:42,920 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 18:39:42,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 18:39:42,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:39:43,034 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:39:43,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:39:43,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:39:43,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:43,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:39:43,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:43,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:39:43,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 18:39:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:43,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:43,273 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_295 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_295) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-12-02 18:39:43,283 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_294 (Array Int Int)) (v_ArrVal_295 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_294) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_295) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-12-02 18:39:43,300 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_294 (Array Int Int)) (v_ArrVal_293 (Array Int Int)) (v_ArrVal_295 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_293) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_294) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_295) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-12-02 18:39:43,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:39:43,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-12-02 18:39:43,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:39:43,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1099 treesize of output 1083 [2023-12-02 18:39:43,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 252 [2023-12-02 18:39:43,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 123 [2023-12-02 18:39:43,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2023-12-02 18:39:43,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2023-12-02 18:39:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-12-02 18:39:43,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817496614] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:39:43,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [862495357] [2023-12-02 18:39:43,972 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) [2023-12-02 18:39:43,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:39:43,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-12-02 18:39:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88671979] [2023-12-02 18:39:43,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:39:43,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 18:39:43,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 18:39:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=534, Unknown=4, NotChecked=150, Total=812 [2023-12-02 18:39:43,975 INFO L87 Difference]: Start difference. First operand 72051 states and 276937 transitions. Second operand has 29 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:46,384 INFO L93 Difference]: Finished difference Result 127455 states and 490677 transitions. [2023-12-02 18:39:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:39:46,385 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 18:39:46,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:46,996 INFO L225 Difference]: With dead ends: 127455 [2023-12-02 18:39:46,996 INFO L226 Difference]: Without dead ends: 127455 [2023-12-02 18:39:46,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=749, Unknown=4, NotChecked=180, Total=1122 [2023-12-02 18:39:46,997 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 611 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1284 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:46,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1571 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1236 Invalid, 0 Unknown, 1284 Unchecked, 1.1s Time] [2023-12-02 18:39:47,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127455 states. [2023-12-02 18:39:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127455 to 72078. [2023-12-02 18:39:49,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72078 states, 71239 states have (on average 3.88897935119808) internal successors, (277047), 72077 states have internal predecessors, (277047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72078 states to 72078 states and 277047 transitions. [2023-12-02 18:39:50,139 INFO L78 Accepts]: Start accepts. Automaton has 72078 states and 277047 transitions. Word has length 20 [2023-12-02 18:39:50,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:50,140 INFO L495 AbstractCegarLoop]: Abstraction has 72078 states and 277047 transitions. [2023-12-02 18:39:50,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand 72078 states and 277047 transitions. [2023-12-02 18:39:50,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 18:39:50,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:50,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:50,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 18:39:50,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 18:39:50,343 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:50,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:50,343 INFO L85 PathProgramCache]: Analyzing trace with hash -365227453, now seen corresponding path program 1 times [2023-12-02 18:39:50,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:50,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316656974] [2023-12-02 18:39:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:50,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:50,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:50,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:50,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316656974] [2023-12-02 18:39:50,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316656974] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:50,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628730078] [2023-12-02 18:39:50,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:50,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:39:50,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:39:50,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:39:50,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 18:39:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:51,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 18:39:51,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:51,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-12-02 18:39:51,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:51,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:51,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:51,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:51,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:51,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:51,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:51,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-12-02 18:39:51,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:51,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:39:51,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:39:51,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:39:51,353 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-02 18:39:51,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-12-02 18:39:51,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:39:51,508 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-12-02 18:39:51,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-12-02 18:39:51,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:39:51,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:39:51,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 18:39:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:39:51,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:52,140 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_344 (Array Int Int)) (v_ArrVal_343 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_343) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_344) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-12-02 18:39:52,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:39:52,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-12-02 18:39:52,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:39:52,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 237 [2023-12-02 18:39:52,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 100 [2023-12-02 18:39:52,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2023-12-02 18:39:52,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-12-02 18:39:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-12-02 18:39:52,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628730078] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:39:52,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1556822534] [2023-12-02 18:39:52,630 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) [2023-12-02 18:39:52,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:39:52,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-02 18:39:52,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519500257] [2023-12-02 18:39:52,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:39:52,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 18:39:52,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 18:39:52,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=492, Unknown=5, NotChecked=46, Total=650 [2023-12-02 18:39:52,633 INFO L87 Difference]: Start difference. First operand 72078 states and 277047 transitions. Second operand has 26 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:55,167 INFO L93 Difference]: Finished difference Result 122380 states and 474356 transitions. [2023-12-02 18:39:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:39:55,168 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 18:39:55,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:55,732 INFO L225 Difference]: With dead ends: 122380 [2023-12-02 18:39:55,732 INFO L226 Difference]: Without dead ends: 122380 [2023-12-02 18:39:55,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=180, Invalid=811, Unknown=5, NotChecked=60, Total=1056 [2023-12-02 18:39:55,733 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 352 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:55,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1843 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1591 Invalid, 0 Unknown, 287 Unchecked, 1.0s Time] [2023-12-02 18:39:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122380 states. [2023-12-02 18:39:57,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122380 to 81653. [2023-12-02 18:39:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81653 states, 80814 states have (on average 3.9298141411141634) internal successors, (317584), 81652 states have internal predecessors, (317584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81653 states to 81653 states and 317584 transitions. [2023-12-02 18:39:58,877 INFO L78 Accepts]: Start accepts. Automaton has 81653 states and 317584 transitions. Word has length 20 [2023-12-02 18:39:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:58,877 INFO L495 AbstractCegarLoop]: Abstraction has 81653 states and 317584 transitions. [2023-12-02 18:39:58,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:39:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 81653 states and 317584 transitions. [2023-12-02 18:39:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 18:39:58,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:58,879 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1] [2023-12-02 18:39:58,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 18:39:59,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 18:39:59,080 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:39:59,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:59,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1562218712, now seen corresponding path program 1 times [2023-12-02 18:39:59,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:39:59,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812602227] [2023-12-02 18:39:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:59,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:39:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 18:39:59,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:39:59,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812602227] [2023-12-02 18:39:59,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812602227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:39:59,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:39:59,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:39:59,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102069657] [2023-12-02 18:39:59,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:39:59,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:39:59,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:39:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:39:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:39:59,193 INFO L87 Difference]: Start difference. First operand 81653 states and 317584 transitions. Second operand has 4 states, 4 states have (on average 1.75) 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) [2023-12-02 18:40:00,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:40:00,025 INFO L93 Difference]: Finished difference Result 81621 states and 317538 transitions. [2023-12-02 18:40:00,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:40:00,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) 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 20 [2023-12-02 18:40:00,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:40:00,881 INFO L225 Difference]: With dead ends: 81621 [2023-12-02 18:40:00,881 INFO L226 Difference]: Without dead ends: 81621 [2023-12-02 18:40:00,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:40:00,882 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 6 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:40:00,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 225 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:40:01,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81621 states. [2023-12-02 18:40:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81621 to 81619. [2023-12-02 18:40:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81619 states, 80780 states have (on average 3.930873978707601) internal successors, (317536), 81618 states have internal predecessors, (317536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81619 states to 81619 states and 317536 transitions. [2023-12-02 18:40:03,239 INFO L78 Accepts]: Start accepts. Automaton has 81619 states and 317536 transitions. Word has length 20 [2023-12-02 18:40:03,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:40:03,239 INFO L495 AbstractCegarLoop]: Abstraction has 81619 states and 317536 transitions. [2023-12-02 18:40:03,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) 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) [2023-12-02 18:40:03,240 INFO L276 IsEmpty]: Start isEmpty. Operand 81619 states and 317536 transitions. [2023-12-02 18:40:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 18:40:03,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:40:03,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:40:03,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 18:40:03,241 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:40:03,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:40:03,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2056556716, now seen corresponding path program 1 times [2023-12-02 18:40:03,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:40:03,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191199592] [2023-12-02 18:40:03,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:03,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:40:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:40:04,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:40:04,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191199592] [2023-12-02 18:40:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191199592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:40:04,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134055468] [2023-12-02 18:40:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:04,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:40:04,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:40:04,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:40:04,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:40:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:04,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 18:40:04,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:40:04,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-12-02 18:40:04,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:40:04,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:40:04,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:40:04,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 18:40:04,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:40:04,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 18:40:04,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:40:04,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:40:04,599 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:40:04,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:40:04,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:40:04,744 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-12-02 18:40:04,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-12-02 18:40:04,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:40:04,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:04,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:40:04,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 18:40:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:40:04,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:40:05,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:05,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2023-12-02 18:40:05,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:05,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3105 treesize of output 3055 [2023-12-02 18:40:05,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 498 treesize of output 466 [2023-12-02 18:40:05,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 494 treesize of output 486 [2023-12-02 18:40:05,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 460 treesize of output 444 [2023-12-02 18:40:05,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:05,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 354 treesize of output 350 [2023-12-02 18:40:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:40:06,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134055468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:40:06,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1049969324] [2023-12-02 18:40:06,058 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) [2023-12-02 18:40:06,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:40:06,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2023-12-02 18:40:06,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284913000] [2023-12-02 18:40:06,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:40:06,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 18:40:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:40:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 18:40:06,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=557, Unknown=15, NotChecked=0, Total=702 [2023-12-02 18:40:06,061 INFO L87 Difference]: Start difference. First operand 81619 states and 317536 transitions. Second operand has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:08,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:40:08,676 INFO L93 Difference]: Finished difference Result 124867 states and 486027 transitions. [2023-12-02 18:40:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:40:08,677 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 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 21 [2023-12-02 18:40:08,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:40:09,273 INFO L225 Difference]: With dead ends: 124867 [2023-12-02 18:40:09,274 INFO L226 Difference]: Without dead ends: 124867 [2023-12-02 18:40:09,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=251, Invalid=924, Unknown=15, NotChecked=0, Total=1190 [2023-12-02 18:40:09,275 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 532 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:40:09,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1708 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 18:40:09,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124867 states. [2023-12-02 18:40:11,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124867 to 79226. [2023-12-02 18:40:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79226 states, 78387 states have (on average 3.906349267097861) internal successors, (306207), 79225 states have internal predecessors, (306207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79226 states to 79226 states and 306207 transitions. [2023-12-02 18:40:12,290 INFO L78 Accepts]: Start accepts. Automaton has 79226 states and 306207 transitions. Word has length 21 [2023-12-02 18:40:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:40:12,290 INFO L495 AbstractCegarLoop]: Abstraction has 79226 states and 306207 transitions. [2023-12-02 18:40:12,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:12,290 INFO L276 IsEmpty]: Start isEmpty. Operand 79226 states and 306207 transitions. [2023-12-02 18:40:12,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 18:40:12,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:40:12,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:40:12,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 18:40:12,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 18:40:12,493 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:40:12,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:40:12,493 INFO L85 PathProgramCache]: Analyzing trace with hash 590119714, now seen corresponding path program 1 times [2023-12-02 18:40:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:40:12,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071114155] [2023-12-02 18:40:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:12,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:40:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:40:12,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:40:12,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071114155] [2023-12-02 18:40:12,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071114155] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:40:12,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847955683] [2023-12-02 18:40:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:12,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:40:12,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:40:12,973 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:40:12,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 18:40:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:13,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 18:40:13,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:40:13,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:40:13,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:40:13,240 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:40:13,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:40:13,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:13,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:13,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:13,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:13,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:13,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 18:40:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:40:13,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:40:13,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:13,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-12-02 18:40:13,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:13,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 271 [2023-12-02 18:40:13,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-12-02 18:40:13,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-12-02 18:40:13,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-12-02 18:40:14,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:14,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-12-02 18:40:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:40:14,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847955683] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:40:14,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [161446516] [2023-12-02 18:40:14,335 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) [2023-12-02 18:40:14,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:40:14,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-12-02 18:40:14,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723165161] [2023-12-02 18:40:14,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:40:14,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 18:40:14,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:40:14,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 18:40:14,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=491, Unknown=14, NotChecked=0, Total=600 [2023-12-02 18:40:14,338 INFO L87 Difference]: Start difference. First operand 79226 states and 306207 transitions. Second operand has 25 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:40:17,063 INFO L93 Difference]: Finished difference Result 149412 states and 578747 transitions. [2023-12-02 18:40:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 18:40:17,064 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 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 21 [2023-12-02 18:40:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:40:17,843 INFO L225 Difference]: With dead ends: 149412 [2023-12-02 18:40:17,843 INFO L226 Difference]: Without dead ends: 149412 [2023-12-02 18:40:17,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=282, Invalid=1110, Unknown=14, NotChecked=0, Total=1406 [2023-12-02 18:40:17,845 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 736 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:40:17,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1682 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:40:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149412 states. [2023-12-02 18:40:20,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149412 to 88364. [2023-12-02 18:40:21,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88364 states, 87525 states have (on average 3.925575549842902) internal successors, (343586), 88363 states have internal predecessors, (343586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88364 states to 88364 states and 343586 transitions. [2023-12-02 18:40:21,549 INFO L78 Accepts]: Start accepts. Automaton has 88364 states and 343586 transitions. Word has length 21 [2023-12-02 18:40:21,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:40:21,549 INFO L495 AbstractCegarLoop]: Abstraction has 88364 states and 343586 transitions. [2023-12-02 18:40:21,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:21,549 INFO L276 IsEmpty]: Start isEmpty. Operand 88364 states and 343586 transitions. [2023-12-02 18:40:21,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 18:40:21,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:40:21,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:40:21,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 18:40:21,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 18:40:21,751 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:40:21,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:40:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1562851061, now seen corresponding path program 1 times [2023-12-02 18:40:21,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:40:21,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657298901] [2023-12-02 18:40:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:21,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:40:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:40:21,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:40:21,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657298901] [2023-12-02 18:40:21,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657298901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:40:21,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:40:21,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:40:21,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219490040] [2023-12-02 18:40:21,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:40:21,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:40:21,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:40:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:40:21,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:40:21,877 INFO L87 Difference]: Start difference. First operand 88364 states and 343586 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:24,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:40:24,005 INFO L93 Difference]: Finished difference Result 157568 states and 607515 transitions. [2023-12-02 18:40:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:40:24,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-02 18:40:24,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:40:24,752 INFO L225 Difference]: With dead ends: 157568 [2023-12-02 18:40:24,753 INFO L226 Difference]: Without dead ends: 157568 [2023-12-02 18:40:24,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:40:24,753 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 269 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:40:24,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 394 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:40:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157568 states. [2023-12-02 18:40:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157568 to 109572. [2023-12-02 18:40:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109572 states, 108733 states have (on average 3.990610026394931) internal successors, (433911), 109571 states have internal predecessors, (433911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109572 states to 109572 states and 433911 transitions. [2023-12-02 18:40:29,454 INFO L78 Accepts]: Start accepts. Automaton has 109572 states and 433911 transitions. Word has length 21 [2023-12-02 18:40:29,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:40:29,454 INFO L495 AbstractCegarLoop]: Abstraction has 109572 states and 433911 transitions. [2023-12-02 18:40:29,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:29,454 INFO L276 IsEmpty]: Start isEmpty. Operand 109572 states and 433911 transitions. [2023-12-02 18:40:29,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 18:40:29,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:40:29,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:40:29,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 18:40:29,457 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:40:29,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:40:29,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2029001208, now seen corresponding path program 1 times [2023-12-02 18:40:29,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:40:29,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263805203] [2023-12-02 18:40:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:29,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:40:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:40:29,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:40:29,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263805203] [2023-12-02 18:40:29,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263805203] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:40:29,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619890223] [2023-12-02 18:40:29,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:29,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:40:29,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:40:29,969 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:40:29,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 18:40:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:30,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 18:40:30,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:40:30,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-12-02 18:40:30,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 18:40:30,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-12-02 18:40:30,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-12-02 18:40:30,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-12-02 18:40:30,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:40:30,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:40:30,338 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-02 18:40:30,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-12-02 18:40:30,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:30,507 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-12-02 18:40:30,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-12-02 18:40:30,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:30,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:30,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:30,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:30,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:30,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 18:40:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:40:30,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:40:30,754 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_548 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_548) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456))) is different from false [2023-12-02 18:40:35,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:35,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2023-12-02 18:40:35,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:35,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2187 treesize of output 2171 [2023-12-02 18:40:35,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 532 treesize of output 500 [2023-12-02 18:40:35,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 500 treesize of output 492 [2023-12-02 18:40:35,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 492 treesize of output 476 [2023-12-02 18:40:35,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 237 treesize of output 235 [2023-12-02 18:40:35,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 238 treesize of output 234 [2023-12-02 18:40:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:40:36,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619890223] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:40:36,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [960623179] [2023-12-02 18:40:36,852 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) [2023-12-02 18:40:36,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:40:36,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-02 18:40:36,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391336125] [2023-12-02 18:40:36,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:40:36,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 18:40:36,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:40:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 18:40:36,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=806, Unknown=21, NotChecked=60, Total=1056 [2023-12-02 18:40:36,854 INFO L87 Difference]: Start difference. First operand 109572 states and 433911 transitions. Second operand has 33 states, 32 states have (on average 1.96875) internal successors, (63), 32 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:40:40,256 INFO L93 Difference]: Finished difference Result 184387 states and 709490 transitions. [2023-12-02 18:40:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 18:40:40,256 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.96875) internal successors, (63), 32 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-02 18:40:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:40:41,601 INFO L225 Difference]: With dead ends: 184387 [2023-12-02 18:40:41,601 INFO L226 Difference]: Without dead ends: 184387 [2023-12-02 18:40:41,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=250, Invalid=1065, Unknown=21, NotChecked=70, Total=1406 [2023-12-02 18:40:41,602 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1073 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 476 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:40:41,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 2082 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1914 Invalid, 0 Unknown, 476 Unchecked, 1.7s Time] [2023-12-02 18:40:41,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184387 states. [2023-12-02 18:40:45,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184387 to 109572. [2023-12-02 18:40:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109572 states, 108733 states have (on average 3.990610026394931) internal successors, (433911), 109571 states have internal predecessors, (433911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109572 states to 109572 states and 433911 transitions. [2023-12-02 18:40:45,807 INFO L78 Accepts]: Start accepts. Automaton has 109572 states and 433911 transitions. Word has length 22 [2023-12-02 18:40:45,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:40:45,808 INFO L495 AbstractCegarLoop]: Abstraction has 109572 states and 433911 transitions. [2023-12-02 18:40:45,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.96875) internal successors, (63), 32 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:45,808 INFO L276 IsEmpty]: Start isEmpty. Operand 109572 states and 433911 transitions. [2023-12-02 18:40:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 18:40:45,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:40:45,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:40:45,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 18:40:46,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 18:40:46,010 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:40:46,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:40:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1113811437, now seen corresponding path program 1 times [2023-12-02 18:40:46,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:40:46,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296408711] [2023-12-02 18:40:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:46,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:40:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:40:46,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:40:46,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296408711] [2023-12-02 18:40:46,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296408711] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:40:46,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256751608] [2023-12-02 18:40:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:46,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:40:46,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:40:46,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:40:46,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 18:40:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:47,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 18:40:47,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:40:47,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:40:47,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:40:47,247 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:40:47,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:40:47,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:40:47,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:47,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:40:47,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:47,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:40:47,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 18:40:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:40:47,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:40:47,450 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_598 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_598) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-12-02 18:40:47,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:47,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-12-02 18:40:47,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:47,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 237 [2023-12-02 18:40:47,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2023-12-02 18:40:47,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2023-12-02 18:40:47,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-12-02 18:40:47,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:47,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-12-02 18:40:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:40:47,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256751608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:40:47,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1764910967] [2023-12-02 18:40:47,889 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) [2023-12-02 18:40:47,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:40:47,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-12-02 18:40:47,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614242816] [2023-12-02 18:40:47,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:40:47,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 18:40:47,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:40:47,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 18:40:47,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=457, Unknown=10, NotChecked=44, Total=600 [2023-12-02 18:40:47,892 INFO L87 Difference]: Start difference. First operand 109572 states and 433911 transitions. Second operand has 25 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:40:50,714 INFO L93 Difference]: Finished difference Result 177558 states and 705247 transitions. [2023-12-02 18:40:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 18:40:50,715 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-02 18:40:50,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:40:51,640 INFO L225 Difference]: With dead ends: 177558 [2023-12-02 18:40:51,641 INFO L226 Difference]: Without dead ends: 177558 [2023-12-02 18:40:51,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=268, Invalid=1056, Unknown=12, NotChecked=70, Total=1406 [2023-12-02 18:40:51,642 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 651 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 479 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:40:51,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1575 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1412 Invalid, 0 Unknown, 479 Unchecked, 1.0s Time] [2023-12-02 18:40:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177558 states. [2023-12-02 18:40:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177558 to 120870. [2023-12-02 18:40:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120870 states, 120031 states have (on average 4.0066482825270135) internal successors, (480922), 120869 states have internal predecessors, (480922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120870 states to 120870 states and 480922 transitions. [2023-12-02 18:40:56,396 INFO L78 Accepts]: Start accepts. Automaton has 120870 states and 480922 transitions. Word has length 22 [2023-12-02 18:40:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:40:56,396 INFO L495 AbstractCegarLoop]: Abstraction has 120870 states and 480922 transitions. [2023-12-02 18:40:56,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:40:56,396 INFO L276 IsEmpty]: Start isEmpty. Operand 120870 states and 480922 transitions. [2023-12-02 18:40:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 18:40:56,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:40:56,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:40:56,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 18:40:56,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:40:56,599 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:40:56,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:40:56,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1015857603, now seen corresponding path program 1 times [2023-12-02 18:40:56,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:40:56,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930465501] [2023-12-02 18:40:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:56,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:40:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:40:57,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:40:57,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930465501] [2023-12-02 18:40:57,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930465501] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:40:57,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076492790] [2023-12-02 18:40:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:57,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:40:57,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:40:57,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:40:57,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 18:40:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:57,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 18:40:57,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:40:57,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:40:57,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:40:57,376 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:40:57,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:40:57,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:57,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:57,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:57,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:57,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:40:57,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:40:57,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 18:40:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:40:57,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:40:58,103 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_653 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_653) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2023-12-02 18:40:58,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:58,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-12-02 18:40:58,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:58,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 551 treesize of output 543 [2023-12-02 18:40:58,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 256 [2023-12-02 18:40:58,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 248 [2023-12-02 18:40:58,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 232 [2023-12-02 18:40:58,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2023-12-02 18:40:58,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:40:58,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2023-12-02 18:40:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:40:58,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076492790] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:40:58,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [7975542] [2023-12-02 18:40:58,921 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) [2023-12-02 18:40:58,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:40:58,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-12-02 18:40:58,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293894368] [2023-12-02 18:40:58,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:40:58,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-02 18:40:58,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:40:58,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-02 18:40:58,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=683, Unknown=21, NotChecked=54, Total=870 [2023-12-02 18:40:58,923 INFO L87 Difference]: Start difference. First operand 120870 states and 480922 transitions. Second operand has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:41:02,623 INFO L93 Difference]: Finished difference Result 248748 states and 981571 transitions. [2023-12-02 18:41:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:41:02,624 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-02 18:41:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:41:04,375 INFO L225 Difference]: With dead ends: 248748 [2023-12-02 18:41:04,375 INFO L226 Difference]: Without dead ends: 248748 [2023-12-02 18:41:04,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=290, Invalid=1251, Unknown=23, NotChecked=76, Total=1640 [2023-12-02 18:41:04,376 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1267 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 496 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:41:04,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1877 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1713 Invalid, 0 Unknown, 496 Unchecked, 1.3s Time] [2023-12-02 18:41:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248748 states. [2023-12-02 18:41:09,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248748 to 128330. [2023-12-02 18:41:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128330 states, 127491 states have (on average 4.055062710308963) internal successors, (516984), 128329 states have internal predecessors, (516984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128330 states to 128330 states and 516984 transitions. [2023-12-02 18:41:10,269 INFO L78 Accepts]: Start accepts. Automaton has 128330 states and 516984 transitions. Word has length 22 [2023-12-02 18:41:10,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:41:10,270 INFO L495 AbstractCegarLoop]: Abstraction has 128330 states and 516984 transitions. [2023-12-02 18:41:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand 128330 states and 516984 transitions. [2023-12-02 18:41:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 18:41:10,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:41:10,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:41:10,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 18:41:10,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:41:10,473 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:41:10,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:41:10,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1203743878, now seen corresponding path program 1 times [2023-12-02 18:41:10,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:41:10,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034186166] [2023-12-02 18:41:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:41:10,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:41:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:41:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:41:10,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:41:10,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034186166] [2023-12-02 18:41:10,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034186166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:41:10,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:41:10,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:41:10,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499567538] [2023-12-02 18:41:10,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:41:10,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:41:10,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:41:10,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:41:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:41:10,573 INFO L87 Difference]: Start difference. First operand 128330 states and 516984 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:41:12,600 INFO L93 Difference]: Finished difference Result 178397 states and 700571 transitions. [2023-12-02 18:41:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:41:12,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-02 18:41:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:41:14,001 INFO L225 Difference]: With dead ends: 178397 [2023-12-02 18:41:14,001 INFO L226 Difference]: Without dead ends: 178397 [2023-12-02 18:41:14,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:41:14,002 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 340 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:41:14,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 465 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:41:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178397 states. [2023-12-02 18:41:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178397 to 150233. [2023-12-02 18:41:18,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150233 states, 149394 states have (on average 4.063108290828279) internal successors, (607004), 150232 states have internal predecessors, (607004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150233 states to 150233 states and 607004 transitions. [2023-12-02 18:41:19,345 INFO L78 Accepts]: Start accepts. Automaton has 150233 states and 607004 transitions. Word has length 22 [2023-12-02 18:41:19,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:41:19,345 INFO L495 AbstractCegarLoop]: Abstraction has 150233 states and 607004 transitions. [2023-12-02 18:41:19,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 150233 states and 607004 transitions. [2023-12-02 18:41:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:41:19,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:41:19,348 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-12-02 18:41:19,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 18:41:19,348 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:41:19,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:41:19,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1446850054, now seen corresponding path program 1 times [2023-12-02 18:41:19,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:41:19,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405655698] [2023-12-02 18:41:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:41:19,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:41:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:41:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 18:41:19,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:41:19,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405655698] [2023-12-02 18:41:19,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405655698] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:41:19,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832664035] [2023-12-02 18:41:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:41:19,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:41:19,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:41:19,490 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:41:19,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 18:41:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:41:19,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 18:41:19,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:41:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 18:41:19,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:41:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 18:41:19,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832664035] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:41:19,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1842998817] [2023-12-02 18:41:19,827 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java: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) [2023-12-02 18:41:19,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:41:19,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-12-02 18:41:19,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939184200] [2023-12-02 18:41:19,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:41:19,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 18:41:19,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:41:19,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 18:41:19,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-12-02 18:41:19,828 INFO L87 Difference]: Start difference. First operand 150233 states and 607004 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 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) [2023-12-02 18:41:23,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:41:23,304 INFO L93 Difference]: Finished difference Result 300337 states and 1213730 transitions. [2023-12-02 18:41:23,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 18:41:23,305 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 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 23 [2023-12-02 18:41:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:41:25,068 INFO L225 Difference]: With dead ends: 300337 [2023-12-02 18:41:25,068 INFO L226 Difference]: Without dead ends: 300337 [2023-12-02 18:41:25,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2023-12-02 18:41:25,069 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 306 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:41:25,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 649 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:41:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300337 states. [2023-12-02 18:41:30,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300337 to 150244. [2023-12-02 18:41:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150244 states, 149405 states have (on average 4.0629028479635885) internal successors, (607018), 150243 states have internal predecessors, (607018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150244 states to 150244 states and 607018 transitions. [2023-12-02 18:41:32,369 INFO L78 Accepts]: Start accepts. Automaton has 150244 states and 607018 transitions. Word has length 23 [2023-12-02 18:41:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:41:32,370 INFO L495 AbstractCegarLoop]: Abstraction has 150244 states and 607018 transitions. [2023-12-02 18:41:32,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 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) [2023-12-02 18:41:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand 150244 states and 607018 transitions. [2023-12-02 18:41:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:41:32,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:41:32,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:41:32,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 18:41:32,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:41:32,577 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:41:32,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:41:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1525502530, now seen corresponding path program 1 times [2023-12-02 18:41:32,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:41:32,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872810300] [2023-12-02 18:41:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:41:32,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:41:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:41:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:41:33,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:41:33,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872810300] [2023-12-02 18:41:33,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872810300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:41:33,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819359791] [2023-12-02 18:41:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:41:33,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:41:33,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:41:33,344 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:41:33,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 18:41:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:41:33,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-02 18:41:33,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:41:33,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,523 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 18:41:33,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 18 [2023-12-02 18:41:33,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2023-12-02 18:41:33,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2023-12-02 18:41:33,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2023-12-02 18:41:33,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,623 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 18:41:33,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 18 [2023-12-02 18:41:33,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:33,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2023-12-02 18:41:33,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:41:33,869 INFO L349 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-12-02 18:41:33,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-12-02 18:41:33,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:41:34,116 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-12-02 18:41:34,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2023-12-02 18:41:34,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:41:34,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:34,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:41:34,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:34,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:41:34,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:41:34,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 18:41:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:41:34,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:41:34,427 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_781 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_781) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296)) is different from false [2023-12-02 18:41:34,436 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_781 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_781) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-12-02 18:41:34,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:41:34,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2023-12-02 18:41:34,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:41:34,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 7713 treesize of output 7649 [2023-12-02 18:41:35,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 468 treesize of output 436 [2023-12-02 18:41:35,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 215 [2023-12-02 18:41:35,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 434 treesize of output 426 [2023-12-02 18:41:35,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 426 treesize of output 410 [2023-12-02 18:41:35,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 202 [2023-12-02 18:41:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:41:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819359791] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:41:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [162211518] [2023-12-02 18:41:36,101 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) [2023-12-02 18:41:36,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:41:36,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-12-02 18:41:36,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118419292] [2023-12-02 18:41:36,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:41:36,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 18:41:36,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:41:36,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 18:41:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=670, Unknown=10, NotChecked=110, Total=930 [2023-12-02 18:41:36,104 INFO L87 Difference]: Start difference. First operand 150244 states and 607018 transitions. Second operand has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 30 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:40,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:41:40,193 INFO L93 Difference]: Finished difference Result 197363 states and 777553 transitions. [2023-12-02 18:41:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 18:41:40,193 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 30 states have internal predecessors, (62), 0 states have call successors, (0), 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 23 [2023-12-02 18:41:40,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:41:41,173 INFO L225 Difference]: With dead ends: 197363 [2023-12-02 18:41:41,173 INFO L226 Difference]: Without dead ends: 197363 [2023-12-02 18:41:41,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 5 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=312, Invalid=1168, Unknown=10, NotChecked=150, Total=1640 [2023-12-02 18:41:41,174 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 906 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1041 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:41:41,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 2112 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1900 Invalid, 0 Unknown, 1041 Unchecked, 1.8s Time] [2023-12-02 18:41:41,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197363 states. [2023-12-02 18:41:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197363 to 137868. [2023-12-02 18:41:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137868 states, 137029 states have (on average 4.015996613855461) internal successors, (550308), 137867 states have internal predecessors, (550308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137868 states to 137868 states and 550308 transitions. [2023-12-02 18:41:47,102 INFO L78 Accepts]: Start accepts. Automaton has 137868 states and 550308 transitions. Word has length 23 [2023-12-02 18:41:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:41:47,102 INFO L495 AbstractCegarLoop]: Abstraction has 137868 states and 550308 transitions. [2023-12-02 18:41:47,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 30 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand 137868 states and 550308 transitions. [2023-12-02 18:41:47,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:41:47,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:41:47,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:41:47,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 18:41:47,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:41:47,309 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:41:47,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:41:47,310 INFO L85 PathProgramCache]: Analyzing trace with hash 168416420, now seen corresponding path program 1 times [2023-12-02 18:41:47,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:41:47,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691708856] [2023-12-02 18:41:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:41:47,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:41:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:41:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:41:47,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:41:47,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691708856] [2023-12-02 18:41:47,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691708856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:41:47,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:41:47,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:41:47,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134282926] [2023-12-02 18:41:47,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:41:47,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:41:47,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:41:47,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:41:47,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:41:47,443 INFO L87 Difference]: Start difference. First operand 137868 states and 550308 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:41:49,708 INFO L93 Difference]: Finished difference Result 218723 states and 856668 transitions. [2023-12-02 18:41:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:41:49,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-02 18:41:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:41:50,767 INFO L225 Difference]: With dead ends: 218723 [2023-12-02 18:41:50,767 INFO L226 Difference]: Without dead ends: 218723 [2023-12-02 18:41:50,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:41:50,768 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 343 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:41:50,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 368 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:41:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218723 states. [2023-12-02 18:41:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218723 to 162015. [2023-12-02 18:41:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162015 states, 161176 states have (on average 4.032393160272001) internal successors, (649925), 162014 states have internal predecessors, (649925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162015 states to 162015 states and 649925 transitions. [2023-12-02 18:41:56,771 INFO L78 Accepts]: Start accepts. Automaton has 162015 states and 649925 transitions. Word has length 23 [2023-12-02 18:41:56,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:41:56,771 INFO L495 AbstractCegarLoop]: Abstraction has 162015 states and 649925 transitions. [2023-12-02 18:41:56,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:41:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 162015 states and 649925 transitions. [2023-12-02 18:41:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:41:56,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:41:56,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:41:56,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-02 18:41:56,774 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:41:56,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:41:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1426784108, now seen corresponding path program 1 times [2023-12-02 18:41:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:41:56,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307913452] [2023-12-02 18:41:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:41:56,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:41:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:41:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:41:57,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:41:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307913452] [2023-12-02 18:41:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307913452] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:41:57,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332887108] [2023-12-02 18:41:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:41:57,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:41:57,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:41:57,236 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:41:57,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 18:41:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:41:57,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 18:41:57,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:41:57,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:41:57,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:41:57,503 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:41:57,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:41:57,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:41:57,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:57,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:41:57,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:57,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:41:57,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:41:57,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:41:57,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 18:41:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:41:57,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:41:57,734 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_857 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_857) c_~B~0.base) (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~B~0.offset)) 4294967296)) is different from false [2023-12-02 18:41:57,739 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_857 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_857) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-12-02 18:41:57,748 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_856 (Array Int Int)) (v_ArrVal_857 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_856) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_857) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-12-02 18:41:57,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:41:57,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 18:41:57,950 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:41:57,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30977 treesize of output 30465 [2023-12-02 18:41:57,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 111 [2023-12-02 18:41:57,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 107 [2023-12-02 18:41:57,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 99 [2023-12-02 18:41:58,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 98 [2023-12-02 18:41:58,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:41:58,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2023-12-02 18:41:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:41:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332887108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:41:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [94367906] [2023-12-02 18:41:58,284 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) [2023-12-02 18:41:58,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:41:58,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-12-02 18:41:58,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144133732] [2023-12-02 18:41:58,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:41:58,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 18:41:58,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:41:58,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 18:41:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=555, Unknown=7, NotChecked=150, Total=812 [2023-12-02 18:41:58,286 INFO L87 Difference]: Start difference. First operand 162015 states and 649925 transitions. Second operand has 29 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:42:02,070 INFO L93 Difference]: Finished difference Result 239009 states and 937584 transitions. [2023-12-02 18:42:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:42:02,071 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 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 23 [2023-12-02 18:42:02,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:42:03,450 INFO L225 Difference]: With dead ends: 239009 [2023-12-02 18:42:03,451 INFO L226 Difference]: Without dead ends: 239009 [2023-12-02 18:42:03,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=266, Invalid=1071, Unknown=7, NotChecked=216, Total=1560 [2023-12-02 18:42:03,452 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1035 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1455 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:42:03,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1655 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1492 Invalid, 0 Unknown, 1455 Unchecked, 1.2s Time] [2023-12-02 18:42:04,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239009 states. [2023-12-02 18:42:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239009 to 146003. [2023-12-02 18:42:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146003 states, 145164 states have (on average 3.975613788542614) internal successors, (577116), 146002 states have internal predecessors, (577116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146003 states to 146003 states and 577116 transitions. [2023-12-02 18:42:09,341 INFO L78 Accepts]: Start accepts. Automaton has 146003 states and 577116 transitions. Word has length 23 [2023-12-02 18:42:09,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:42:09,341 INFO L495 AbstractCegarLoop]: Abstraction has 146003 states and 577116 transitions. [2023-12-02 18:42:09,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:09,341 INFO L276 IsEmpty]: Start isEmpty. Operand 146003 states and 577116 transitions. [2023-12-02 18:42:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:42:09,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:42:09,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:42:09,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 18:42:09,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 18:42:09,544 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:42:09,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:42:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash -857410707, now seen corresponding path program 1 times [2023-12-02 18:42:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:42:09,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435340433] [2023-12-02 18:42:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:42:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:42:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:42:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:42:09,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:42:09,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435340433] [2023-12-02 18:42:09,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435340433] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:42:09,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733488759] [2023-12-02 18:42:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:42:09,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:42:09,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:42:09,975 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:42:09,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 18:42:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:42:10,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 18:42:10,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:42:10,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:42:10,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:42:10,258 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:42:10,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:42:10,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:42:10,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:42:10,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:42:10,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:42:10,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:42:10,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:42:10,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:42:10,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 18:42:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:42:10,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:42:10,501 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_911 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_911) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2023-12-02 18:42:10,566 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_911 (Array Int Int)) (v_ArrVal_910 (Array Int Int)) (v_ArrVal_909 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_909) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_910) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_911) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2023-12-02 18:42:10,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:42:10,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-12-02 18:42:10,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:42:10,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1099 treesize of output 1083 [2023-12-02 18:42:10,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 256 [2023-12-02 18:42:10,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 248 [2023-12-02 18:42:10,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 122 [2023-12-02 18:42:10,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 230 [2023-12-02 18:42:10,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:42:10,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2023-12-02 18:42:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-12-02 18:42:11,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733488759] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:42:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [464618176] [2023-12-02 18:42:11,025 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) [2023-12-02 18:42:11,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:42:11,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-12-02 18:42:11,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402176996] [2023-12-02 18:42:11,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:42:11,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 18:42:11,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:42:11,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 18:42:11,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=537, Unknown=10, NotChecked=98, Total=756 [2023-12-02 18:42:11,027 INFO L87 Difference]: Start difference. First operand 146003 states and 577116 transitions. Second operand has 28 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:16,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:42:16,550 INFO L93 Difference]: Finished difference Result 307793 states and 1216555 transitions. [2023-12-02 18:42:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:42:16,551 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 0 states have call successors, (0), 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 23 [2023-12-02 18:42:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:42:19,435 INFO L225 Difference]: With dead ends: 307793 [2023-12-02 18:42:19,435 INFO L226 Difference]: Without dead ends: 307793 [2023-12-02 18:42:19,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=289, Invalid=1041, Unknown=10, NotChecked=142, Total=1482 [2023-12-02 18:42:19,436 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 1131 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 882 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:42:19,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 1704 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1846 Invalid, 0 Unknown, 882 Unchecked, 1.7s Time] [2023-12-02 18:42:19,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307793 states. [2023-12-02 18:42:25,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307793 to 155513. [2023-12-02 18:42:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155513 states, 154738 states have (on average 4.006359136088097) internal successors, (619936), 155512 states have internal predecessors, (619936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155513 states to 155513 states and 619936 transitions. [2023-12-02 18:42:26,589 INFO L78 Accepts]: Start accepts. Automaton has 155513 states and 619936 transitions. Word has length 23 [2023-12-02 18:42:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:42:26,589 INFO L495 AbstractCegarLoop]: Abstraction has 155513 states and 619936 transitions. [2023-12-02 18:42:26,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 155513 states and 619936 transitions. [2023-12-02 18:42:26,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:42:26,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:42:26,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:42:26,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 18:42:26,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 18:42:26,793 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:42:26,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:42:26,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1338644201, now seen corresponding path program 1 times [2023-12-02 18:42:26,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:42:26,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091445714] [2023-12-02 18:42:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:42:26,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:42:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:42:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:42:26,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:42:26,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091445714] [2023-12-02 18:42:26,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091445714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:42:26,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:42:26,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:42:26,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545448689] [2023-12-02 18:42:26,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:42:26,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:42:26,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:42:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:42:26,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:42:26,848 INFO L87 Difference]: Start difference. First operand 155513 states and 619936 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:28,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:42:28,819 INFO L93 Difference]: Finished difference Result 183753 states and 720716 transitions. [2023-12-02 18:42:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:42:28,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-02 18:42:28,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:42:29,830 INFO L225 Difference]: With dead ends: 183753 [2023-12-02 18:42:29,830 INFO L226 Difference]: Without dead ends: 183753 [2023-12-02 18:42:29,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:42:29,831 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 150 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:42:29,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 341 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:42:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183753 states. [2023-12-02 18:42:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183753 to 166103. [2023-12-02 18:42:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166103 states, 165328 states have (on average 4.015690022258783) internal successors, (663906), 166102 states have internal predecessors, (663906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166103 states to 166103 states and 663906 transitions. [2023-12-02 18:42:35,758 INFO L78 Accepts]: Start accepts. Automaton has 166103 states and 663906 transitions. Word has length 23 [2023-12-02 18:42:35,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:42:35,758 INFO L495 AbstractCegarLoop]: Abstraction has 166103 states and 663906 transitions. [2023-12-02 18:42:35,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:35,758 INFO L276 IsEmpty]: Start isEmpty. Operand 166103 states and 663906 transitions. [2023-12-02 18:42:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:42:35,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:42:35,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:42:35,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-02 18:42:35,760 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:42:35,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:42:35,762 INFO L85 PathProgramCache]: Analyzing trace with hash -391328134, now seen corresponding path program 1 times [2023-12-02 18:42:35,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:42:35,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307849293] [2023-12-02 18:42:35,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:42:35,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:42:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:42:35,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:42:35,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:42:35,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307849293] [2023-12-02 18:42:35,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307849293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:42:35,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:42:35,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:42:35,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937908543] [2023-12-02 18:42:35,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:42:35,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:42:35,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:42:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:42:35,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:42:35,817 INFO L87 Difference]: Start difference. First operand 166103 states and 663906 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:42:37,654 INFO L93 Difference]: Finished difference Result 176693 states and 697286 transitions. [2023-12-02 18:42:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:42:37,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-02 18:42:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:42:38,530 INFO L225 Difference]: With dead ends: 176693 [2023-12-02 18:42:38,530 INFO L226 Difference]: Without dead ends: 176693 [2023-12-02 18:42:38,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:42:38,531 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 148 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:42:38,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 260 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:42:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176693 states. [2023-12-02 18:42:42,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176693 to 166103. [2023-12-02 18:42:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166103 states, 165328 states have (on average 3.9943385270492597) internal successors, (660376), 166102 states have internal predecessors, (660376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166103 states to 166103 states and 660376 transitions. [2023-12-02 18:42:44,379 INFO L78 Accepts]: Start accepts. Automaton has 166103 states and 660376 transitions. Word has length 23 [2023-12-02 18:42:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:42:44,379 INFO L495 AbstractCegarLoop]: Abstraction has 166103 states and 660376 transitions. [2023-12-02 18:42:44,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 166103 states and 660376 transitions. [2023-12-02 18:42:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:42:44,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:42:44,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:42:44,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-02 18:42:44,382 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:42:44,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:42:44,383 INFO L85 PathProgramCache]: Analyzing trace with hash -391327109, now seen corresponding path program 1 times [2023-12-02 18:42:44,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:42:44,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900560329] [2023-12-02 18:42:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:42:44,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:42:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:42:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:42:44,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:42:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900560329] [2023-12-02 18:42:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900560329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:42:44,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:42:44,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:42:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400732477] [2023-12-02 18:42:44,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:42:44,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:42:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:42:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:42:44,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:42:44,458 INFO L87 Difference]: Start difference. First operand 166103 states and 660376 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:42:46,312 INFO L93 Difference]: Finished difference Result 180223 states and 710766 transitions. [2023-12-02 18:42:46,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:42:46,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-02 18:42:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:42:47,356 INFO L225 Difference]: With dead ends: 180223 [2023-12-02 18:42:47,356 INFO L226 Difference]: Without dead ends: 180219 [2023-12-02 18:42:47,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:42:47,356 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 145 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:42:47,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 319 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:42:47,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180219 states. [2023-12-02 18:42:51,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180219 to 162569. [2023-12-02 18:42:52,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162569 states, 161795 states have (on average 3.9762786241849253) internal successors, (643342), 162568 states have internal predecessors, (643342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162569 states to 162569 states and 643342 transitions. [2023-12-02 18:42:52,936 INFO L78 Accepts]: Start accepts. Automaton has 162569 states and 643342 transitions. Word has length 23 [2023-12-02 18:42:52,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:42:52,936 INFO L495 AbstractCegarLoop]: Abstraction has 162569 states and 643342 transitions. [2023-12-02 18:42:52,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:52,937 INFO L276 IsEmpty]: Start isEmpty. Operand 162569 states and 643342 transitions. [2023-12-02 18:42:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 18:42:52,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:42:52,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:42:52,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-02 18:42:52,939 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:42:52,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:42:52,940 INFO L85 PathProgramCache]: Analyzing trace with hash 925942992, now seen corresponding path program 1 times [2023-12-02 18:42:52,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:42:52,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051008128] [2023-12-02 18:42:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:42:52,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:42:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:42:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:42:53,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:42:53,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051008128] [2023-12-02 18:42:53,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051008128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:42:53,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:42:53,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:42:53,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078134043] [2023-12-02 18:42:53,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:42:53,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:42:53,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:42:53,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:42:53,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:42:53,018 INFO L87 Difference]: Start difference. First operand 162569 states and 643342 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:42:55,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:42:55,750 INFO L93 Difference]: Finished difference Result 225762 states and 878447 transitions. [2023-12-02 18:42:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:42:55,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-12-02 18:42:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:42:56,979 INFO L225 Difference]: With dead ends: 225762 [2023-12-02 18:42:56,979 INFO L226 Difference]: Without dead ends: 225762 [2023-12-02 18:42:56,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:42:56,980 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 325 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:42:56,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 467 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:42:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225762 states. [2023-12-02 18:43:02,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225762 to 194111. [2023-12-02 18:43:02,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194111 states, 193337 states have (on average 3.9933070234874855) internal successors, (772054), 194110 states have internal predecessors, (772054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:43:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194111 states to 194111 states and 772054 transitions. [2023-12-02 18:43:03,925 INFO L78 Accepts]: Start accepts. Automaton has 194111 states and 772054 transitions. Word has length 24 [2023-12-02 18:43:03,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:43:03,925 INFO L495 AbstractCegarLoop]: Abstraction has 194111 states and 772054 transitions. [2023-12-02 18:43:03,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:43:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand 194111 states and 772054 transitions. [2023-12-02 18:43:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 18:43:03,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:43:03,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:43:03,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-02 18:43:03,928 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:43:03,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:43:03,929 INFO L85 PathProgramCache]: Analyzing trace with hash -809958629, now seen corresponding path program 1 times [2023-12-02 18:43:03,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:43:03,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372744669] [2023-12-02 18:43:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:43:03,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:43:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:43:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:43:04,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:43:04,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372744669] [2023-12-02 18:43:04,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372744669] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:43:04,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656125820] [2023-12-02 18:43:04,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:43:04,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:43:04,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:43:04,324 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:43:04,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 18:43:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:43:04,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 18:43:04,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:43:04,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:43:04,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:43:04,619 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:43:04,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:43:05,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:43:05,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:43:05,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:43:05,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:43:05,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:43:05,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:43:05,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 18:43:05,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 18:43:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:43:05,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:43:05,385 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1048 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1048) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-12-02 18:43:05,497 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1048 (Array Int Int)) (v_ArrVal_1047 (Array Int Int)) (v_ArrVal_1046 (Array Int Int)) (v_ArrVal_1045 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1045) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1046) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1047) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1048) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-12-02 18:43:05,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:43:05,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 18:43:05,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:43:05,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 485 treesize of output 477 [2023-12-02 18:43:05,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 212 [2023-12-02 18:43:05,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 204 [2023-12-02 18:43:05,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 99 [2023-12-02 18:43:05,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 98 [2023-12-02 18:43:05,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:43:05,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2023-12-02 18:43:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-12-02 18:43:06,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656125820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:43:06,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [915550387] [2023-12-02 18:43:06,037 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) [2023-12-02 18:43:06,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:43:06,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-12-02 18:43:06,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118784580] [2023-12-02 18:43:06,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:43:06,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 18:43:06,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:43:06,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 18:43:06,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=526, Unknown=19, NotChecked=98, Total=756 [2023-12-02 18:43:06,039 INFO L87 Difference]: Start difference. First operand 194111 states and 772054 transitions. Second operand has 28 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:43:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:43:10,716 INFO L93 Difference]: Finished difference Result 348593 states and 1382758 transitions. [2023-12-02 18:43:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:43:10,717 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 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 24 [2023-12-02 18:43:10,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:43:13,211 INFO L225 Difference]: With dead ends: 348593 [2023-12-02 18:43:13,212 INFO L226 Difference]: Without dead ends: 348593 [2023-12-02 18:43:13,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=1025, Unknown=19, NotChecked=142, Total=1482 [2023-12-02 18:43:13,213 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1298 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 851 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:43:13,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 1281 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1436 Invalid, 0 Unknown, 851 Unchecked, 1.1s Time] [2023-12-02 18:43:13,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348593 states. [2023-12-02 18:43:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348593 to 202027. [2023-12-02 18:43:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202027 states, 201317 states have (on average 4.005136178266118) internal successors, (806302), 202026 states have internal predecessors, (806302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:43:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202027 states to 202027 states and 806302 transitions. [2023-12-02 18:43:22,111 INFO L78 Accepts]: Start accepts. Automaton has 202027 states and 806302 transitions. Word has length 24 [2023-12-02 18:43:22,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:43:22,112 INFO L495 AbstractCegarLoop]: Abstraction has 202027 states and 806302 transitions. [2023-12-02 18:43:22,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:43:22,112 INFO L276 IsEmpty]: Start isEmpty. Operand 202027 states and 806302 transitions. [2023-12-02 18:43:22,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 18:43:22,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:43:22,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:43:22,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 18:43:22,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfcf962-c432-4876-a175-26cbc4b36539/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-02 18:43:22,315 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-12-02 18:43:22,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:43:22,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1482231873, now seen corresponding path program 1 times [2023-12-02 18:43:22,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:43:22,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264197986] [2023-12-02 18:43:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:43:22,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:43:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:43:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:43:22,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:43:22,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264197986] [2023-12-02 18:43:22,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264197986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:43:22,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:43:22,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:43:22,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139836530] [2023-12-02 18:43:22,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:43:22,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:43:22,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:43:22,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:43:22,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:43:22,375 INFO L87 Difference]: Start difference. First operand 202027 states and 806302 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:43:24,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:43:24,624 INFO L93 Difference]: Finished difference Result 215191 states and 857008 transitions. [2023-12-02 18:43:24,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:43:24,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-12-02 18:43:24,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted.