./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:08:29,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:08:29,652 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:08:29,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:08:29,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:08:29,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:08:29,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:08:29,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:08:29,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:08:29,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:08:29,687 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:08:29,688 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:08:29,689 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:08:29,689 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:08:29,690 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:08:29,690 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:08:29,691 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:08:29,691 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:08:29,692 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:08:29,693 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:08:29,693 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:08:29,694 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:08:29,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:08:29,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:08:29,696 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:08:29,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:08:29,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:08:29,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:08:29,698 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:08:29,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:08:29,699 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:08:29,700 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:08:29,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:08:29,701 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:08:29,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:08:29,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:08:29,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:29,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:08:29,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:08:29,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:08:29,704 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:08:29,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:08:29,705 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:08:29,706 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:08:29,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:08:29,706 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_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-11-12 00:08:29,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:08:29,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:08:30,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:08:30,002 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:08:30,002 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:08:30,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-12 00:08:33,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:08:33,408 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:08:33,409 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-12 00:08:33,421 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/data/cdfecd646/a0b9fbefce314729a3a5fcb8b0f0c66e/FLAG746fbfa58 [2023-11-12 00:08:33,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/data/cdfecd646/a0b9fbefce314729a3a5fcb8b0f0c66e [2023-11-12 00:08:33,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:08:33,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:08:33,455 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:33,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:08:33,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:08:33,462 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f24352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33, skipping insertion in model container [2023-11-12 00:08:33,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,503 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:08:33,762 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2644,2657] [2023-11-12 00:08:33,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:33,787 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:08:33,813 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2644,2657] [2023-11-12 00:08:33,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:33,836 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:08:33,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33 WrapperNode [2023-11-12 00:08:33,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:33,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:33,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:08:33,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:08:33,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,892 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 196 [2023-11-12 00:08:33,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:33,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:08:33,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:08:33,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:08:33,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,944 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:08:33,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:08:33,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:08:33,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:08:33,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (1/1) ... [2023-11-12 00:08:33,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:33,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:08:34,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:08:34,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:08:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:08:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:08:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:08:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:08:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:08:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:08:34,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:08:34,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:08:34,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:08:34,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:08:34,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:08:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:08:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:08:34,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:08:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:08:34,047 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:08:34,169 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:08:34,172 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:08:34,698 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:08:34,711 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:08:34,711 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-12 00:08:34,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:34 BoogieIcfgContainer [2023-11-12 00:08:34,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:08:34,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:08:34,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:08:34,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:08:34,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:08:33" (1/3) ... [2023-11-12 00:08:34,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6d7e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:34, skipping insertion in model container [2023-11-12 00:08:34,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:33" (2/3) ... [2023-11-12 00:08:34,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6d7e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:34, skipping insertion in model container [2023-11-12 00:08:34,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:34" (3/3) ... [2023-11-12 00:08:34,725 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-12 00:08:34,734 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:08:34,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:08:34,747 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:08:34,747 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:08:34,850 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 00:08:34,932 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:08:34,949 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 291 transitions, 596 flow [2023-11-12 00:08:34,952 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 291 transitions, 596 flow [2023-11-12 00:08:34,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 291 transitions, 596 flow [2023-11-12 00:08:35,089 INFO L124 PetriNetUnfolderBase]: 26/289 cut-off events. [2023-11-12 00:08:35,089 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 00:08:35,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 289 events. 26/289 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 302 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-11-12 00:08:35,100 INFO L119 LiptonReduction]: Number of co-enabled transitions 1212 [2023-11-12 00:09:01,960 INFO L134 LiptonReduction]: Checked pairs total: 1816 [2023-11-12 00:09:01,960 INFO L136 LiptonReduction]: Total number of compositions: 328 [2023-11-12 00:09:01,970 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 31 transitions, 76 flow [2023-11-12 00:09:01,994 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 76 states, 75 states have (on average 2.4266666666666667) internal successors, (182), 75 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:02,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:09:02,023 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;@6b8c807b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:09:02,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-12 00:09:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 75 states have (on average 2.4266666666666667) internal successors, (182), 75 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:02,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:09:02,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:02,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:02,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 00:09:02,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash 180937017, now seen corresponding path program 1 times [2023-11-12 00:09:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:02,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084816664] [2023-11-12 00:09:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:02,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:02,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:09:02,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853790511] [2023-11-12 00:09:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:02,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:02,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:02,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:02,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:09:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:02,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:09:02,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:02,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:02,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:02,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084816664] [2023-11-12 00:09:02,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:09:02,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853790511] [2023-11-12 00:09:02,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853790511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:02,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:02,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:02,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873933428] [2023-11-12 00:09:02,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:02,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:09:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:09:02,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:09:02,503 INFO L87 Difference]: Start difference. First operand has 76 states, 75 states have (on average 2.4266666666666667) internal successors, (182), 75 states have internal predecessors, (182), 0 states have call successors, (0), 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 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:02,730 INFO L93 Difference]: Finished difference Result 148 states and 358 transitions. [2023-11-12 00:09:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:09:02,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 00:09:02,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:02,745 INFO L225 Difference]: With dead ends: 148 [2023-11-12 00:09:02,746 INFO L226 Difference]: Without dead ends: 78 [2023-11-12 00:09:02,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:09:02,755 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:02,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:09:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-12 00:09:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2023-11-12 00:09:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 2.4078947368421053) internal successors, (183), 76 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 183 transitions. [2023-11-12 00:09:02,820 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 183 transitions. Word has length 16 [2023-11-12 00:09:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:02,821 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 183 transitions. [2023-11-12 00:09:02,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 183 transitions. [2023-11-12 00:09:02,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:09:02,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:02,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:02,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:03,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:09:03,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 00:09:03,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1895188765, now seen corresponding path program 1 times [2023-11-12 00:09:03,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:03,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071502638] [2023-11-12 00:09:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:03,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:03,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:09:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21026050] [2023-11-12 00:09:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:03,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:03,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:03,067 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:03,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:09:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:03,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:09:03,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:03,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:09:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:03,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:03,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071502638] [2023-11-12 00:09:03,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:09:03,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21026050] [2023-11-12 00:09:03,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21026050] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:09:03,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1287425194] [2023-11-12 00:09:03,301 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgJoinThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:09:03,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:09:03,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-11-12 00:09:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13427451] [2023-11-12 00:09:03,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:09:03,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:09:03,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:09:03,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:09:03,307 INFO L87 Difference]: Start difference. First operand 77 states and 183 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:03,484 INFO L93 Difference]: Finished difference Result 117 states and 289 transitions. [2023-11-12 00:09:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:09:03,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 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 18 [2023-11-12 00:09:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:03,487 INFO L225 Difference]: With dead ends: 117 [2023-11-12 00:09:03,487 INFO L226 Difference]: Without dead ends: 117 [2023-11-12 00:09:03,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:09:03,489 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:03,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:09:03,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-12 00:09:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 87. [2023-11-12 00:09:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.4069767441860463) internal successors, (207), 86 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:03,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 207 transitions. [2023-11-12 00:09:03,501 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 207 transitions. Word has length 18 [2023-11-12 00:09:03,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:03,502 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 207 transitions. [2023-11-12 00:09:03,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:03,502 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 207 transitions. [2023-11-12 00:09:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 00:09:03,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:03,504 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] [2023-11-12 00:09:03,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:03,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:03,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 00:09:03,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash 38616118, now seen corresponding path program 1 times [2023-11-12 00:09:03,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:03,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937099579] [2023-11-12 00:09:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:03,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:09:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222709033] [2023-11-12 00:09:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:03,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:03,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:03,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:03,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:09:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:03,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:09:03,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:09:03,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:03,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:03,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937099579] [2023-11-12 00:09:03,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:09:03,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222709033] [2023-11-12 00:09:03,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222709033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:03,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:03,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:03,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535209711] [2023-11-12 00:09:03,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:03,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:09:03,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:03,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:09:03,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:09:03,935 INFO L87 Difference]: Start difference. First operand 87 states and 207 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:04,098 INFO L93 Difference]: Finished difference Result 171 states and 411 transitions. [2023-11-12 00:09:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:09:04,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-12 00:09:04,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:04,101 INFO L225 Difference]: With dead ends: 171 [2023-11-12 00:09:04,101 INFO L226 Difference]: Without dead ends: 88 [2023-11-12 00:09:04,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:09:04,102 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:04,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:09:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-12 00:09:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-11-12 00:09:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3908045977011496) internal successors, (208), 87 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 208 transitions. [2023-11-12 00:09:04,149 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 208 transitions. Word has length 20 [2023-11-12 00:09:04,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:04,149 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 208 transitions. [2023-11-12 00:09:04,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:04,150 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 208 transitions. [2023-11-12 00:09:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 00:09:04,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:04,156 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] [2023-11-12 00:09:04,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:04,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-12 00:09:04,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 00:09:04,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash 105739015, now seen corresponding path program 1 times [2023-11-12 00:09:04,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:04,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644089142] [2023-11-12 00:09:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:04,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:09:04,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771787113] [2023-11-12 00:09:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:04,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:04,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:04,386 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:04,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:09:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:04,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:09:04,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:04,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:09:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:04,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644089142] [2023-11-12 00:09:04,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:09:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771787113] [2023-11-12 00:09:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771787113] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:09:04,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:09:04,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-12 00:09:04,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959844372] [2023-11-12 00:09:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:09:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:09:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:09:04,681 INFO L87 Difference]: Start difference. First operand 88 states and 208 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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) [2023-11-12 00:09:04,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:04,814 INFO L93 Difference]: Finished difference Result 102 states and 238 transitions. [2023-11-12 00:09:04,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:09:04,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 [2023-11-12 00:09:04,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:04,817 INFO L225 Difference]: With dead ends: 102 [2023-11-12 00:09:04,817 INFO L226 Difference]: Without dead ends: 102 [2023-11-12 00:09:04,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:09:04,819 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:04,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:09:04,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-12 00:09:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2023-11-12 00:09:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.3917525773195876) internal successors, (232), 97 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 232 transitions. [2023-11-12 00:09:04,829 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 232 transitions. Word has length 21 [2023-11-12 00:09:04,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:04,830 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 232 transitions. [2023-11-12 00:09:04,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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) [2023-11-12 00:09:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 232 transitions. [2023-11-12 00:09:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-12 00:09:04,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:04,831 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] [2023-11-12 00:09:04,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:05,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-12 00:09:05,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 00:09:05,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:05,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2008878747, now seen corresponding path program 1 times [2023-11-12 00:09:05,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:05,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256959560] [2023-11-12 00:09:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:05,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:09:05,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451549239] [2023-11-12 00:09:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:05,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:05,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:05,057 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:05,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:09:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:05,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 00:09:05,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:09:05,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:05,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:05,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256959560] [2023-11-12 00:09:05,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:09:05,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451549239] [2023-11-12 00:09:05,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451549239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:05,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:05,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:09:05,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886746653] [2023-11-12 00:09:05,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:05,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:09:05,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:09:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:09:05,568 INFO L87 Difference]: Start difference. First operand 98 states and 232 transitions. Second operand has 6 states, 6 states have (on average 4.0) 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) [2023-11-12 00:09:05,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:05,993 INFO L93 Difference]: Finished difference Result 103 states and 239 transitions. [2023-11-12 00:09:05,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:09:05,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) 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 [2023-11-12 00:09:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:05,995 INFO L225 Difference]: With dead ends: 103 [2023-11-12 00:09:05,995 INFO L226 Difference]: Without dead ends: 99 [2023-11-12 00:09:05,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:09:05,997 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:05,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:09:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-12 00:09:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-12 00:09:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.377551020408163) internal successors, (233), 98 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 233 transitions. [2023-11-12 00:09:06,006 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 233 transitions. Word has length 24 [2023-11-12 00:09:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:06,007 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 233 transitions. [2023-11-12 00:09:06,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) 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) [2023-11-12 00:09:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 233 transitions. [2023-11-12 00:09:06,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-12 00:09:06,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:06,008 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, 1] [2023-11-12 00:09:06,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:06,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:06,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 00:09:06,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1366092357, now seen corresponding path program 1 times [2023-11-12 00:09:06,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:06,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026058990] [2023-11-12 00:09:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:06,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:06,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:09:06,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546242687] [2023-11-12 00:09:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:06,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:06,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:06,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:06,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:09:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:06,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:09:06,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:09:06,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:09:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:09:06,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:06,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026058990] [2023-11-12 00:09:06,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:09:06,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546242687] [2023-11-12 00:09:06,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546242687] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:09:06,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:09:06,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-12 00:09:06,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823508912] [2023-11-12 00:09:06,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:06,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:09:06,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:06,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:09:06,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:09:06,475 INFO L87 Difference]: Start difference. First operand 99 states and 233 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:06,586 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2023-11-12 00:09:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:09:06,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-11-12 00:09:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:06,588 INFO L225 Difference]: With dead ends: 100 [2023-11-12 00:09:06,588 INFO L226 Difference]: Without dead ends: 100 [2023-11-12 00:09:06,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:09:06,589 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 53 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:06,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 2 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:09:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-12 00:09:06,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-12 00:09:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.3636363636363638) internal successors, (234), 99 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 234 transitions. [2023-11-12 00:09:06,598 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 234 transitions. Word has length 25 [2023-11-12 00:09:06,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:06,598 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 234 transitions. [2023-11-12 00:09:06,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 234 transitions. [2023-11-12 00:09:06,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 00:09:06,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:06,600 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, 1, 1] [2023-11-12 00:09:06,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:06,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 00:09:06,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 00:09:06,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:06,807 INFO L85 PathProgramCache]: Analyzing trace with hash -841403031, now seen corresponding path program 1 times [2023-11-12 00:09:06,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:06,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371595524] [2023-11-12 00:09:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:06,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:06,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:09:06,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802939536] [2023-11-12 00:09:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:06,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:06,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:06,846 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:06,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:09:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:07,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:09:07,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 00:09:07,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:09:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 00:09:07,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:07,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371595524] [2023-11-12 00:09:07,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:09:07,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802939536] [2023-11-12 00:09:07,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802939536] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:09:07,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:09:07,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-12 00:09:07,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111799785] [2023-11-12 00:09:07,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:07,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:09:07,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:09:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:09:07,116 INFO L87 Difference]: Start difference. First operand 100 states and 234 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:07,248 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2023-11-12 00:09:07,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:09:07,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-12 00:09:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:07,250 INFO L225 Difference]: With dead ends: 118 [2023-11-12 00:09:07,251 INFO L226 Difference]: Without dead ends: 118 [2023-11-12 00:09:07,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:09:07,252 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 49 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:07,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:09:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-12 00:09:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-11-12 00:09:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.393162393162393) internal successors, (280), 117 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 280 transitions. [2023-11-12 00:09:07,260 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 280 transitions. Word has length 26 [2023-11-12 00:09:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:07,261 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 280 transitions. [2023-11-12 00:09:07,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 280 transitions. [2023-11-12 00:09:07,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 00:09:07,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:07,263 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, 1, 1, 1, 1] [2023-11-12 00:09:07,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:07,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 00:09:07,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 00:09:07,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:07,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1139777629, now seen corresponding path program 1 times [2023-11-12 00:09:07,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:07,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117066239] [2023-11-12 00:09:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:07,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:07,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:09:07,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112798841] [2023-11-12 00:09:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:07,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:07,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:07,500 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:07,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8538716-e477-433e-8782-7597de76cc41/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 00:09:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:07,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-12 00:09:07,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:07,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:07,884 INFO L351 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 9 treesize of output 11 [2023-11-12 00:09:07,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:07,906 INFO L351 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 14 treesize of output 11 [2023-11-12 00:09:08,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:08,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:08,029 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-12 00:09:08,029 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2023-11-12 00:09:08,136 INFO L351 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 [2023-11-12 00:09:08,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:08,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:08,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:08,350 INFO L322 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-11-12 00:09:08,350 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2023-11-12 00:09:08,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:08,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:08,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:08,545 INFO L322 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-11-12 00:09:08,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2023-11-12 00:09:08,809 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 8 treesize of output 1 [2023-11-12 00:09:08,972 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 8 treesize of output 1 [2023-11-12 00:09:08,998 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-12 00:09:09,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:09,223 INFO L351 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 41 treesize of output 30 [2023-11-12 00:09:09,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 00:09:09,778 INFO L351 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 15 treesize of output 15 [2023-11-12 00:09:09,792 INFO L351 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 41 treesize of output 30 [2023-11-12 00:09:10,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:10,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:10,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-12 00:09:10,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:10,037 INFO L351 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 41 treesize of output 30 [2023-11-12 00:09:10,946 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-12 00:09:10,947 INFO L351 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 73 [2023-11-12 00:09:10,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-11-12 00:09:10,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 55 treesize of output 40 [2023-11-12 00:09:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:09:11,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:09:11,777 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:09:11,778 INFO L351 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 322 treesize of output 290 [2023-11-12 00:09:11,791 INFO L351 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 143 treesize of output 137 [2023-11-12 00:09:12,388 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset)))) (let ((.cse4 (* c_thread2Thread1of1ForFork1_~j~0 4)) (.cse6 (= .cse2 c_~B~0.base))) (let ((.cse9 (not .cse6)) (.cse3 (select |c_#memory_int| .cse2)) (.cse5 (select (select |c_#memory_int| c_~F~0.base) (+ .cse4 (* (* c_thread2Thread1of1ForFork1_~i~1 c_~M~0) 4) c_~F~0.offset)))) (and (or (forall ((v_~a~0_64 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int)) (v_arrayElimCell_23 Int) (v_~b~0_62 Int)) (or (let ((.cse0 (store |c_#memory_int| .cse2 (store .cse3 (+ .cse4 v_arrayElimCell_23) .cse5))) (.cse1 (* v_~b~0_62 4))) (= (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1 (* 4 (* v_~a~0_64 c_~M~0)))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse1 v_arrayElimCell_24)))) (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0) (= v_~a~0_64 c_thread2Thread1of1ForFork1_~i~1))) .cse6) (or (forall ((v_arrayElimCell_25 Int) (v_~a~0_64 Int) (v_ArrVal_663 (Array Int Int)) (v_arrayElimCell_23 Int) (v_~b~0_62 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (let ((.cse7 (store |c_#memory_int| .cse2 (store .cse3 (+ .cse4 v_arrayElimCell_23) .cse5))) (.cse8 (* v_~b~0_62 4))) (= (select (select .cse7 (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse8 v_arrayElimCell_25)) (select (select .cse7 c_~A~0.base) (+ c_~A~0.offset .cse8 (* 4 (* v_~a~0_64 c_~M~0)))))) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0) (= v_~a~0_64 c_thread2Thread1of1ForFork1_~i~1))) .cse9) (or (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_~a~0_64 Int) (v_ArrVal_663 (Array Int Int)) (v_~b~0_62 Int)) (or (let ((.cse10 (store |c_#memory_int| .cse2 (store .cse3 (+ .cse4 v_arrayElimCell_24) .cse5))) (.cse11 (* v_~b~0_62 4))) (= (select (select .cse10 c_~A~0.base) (+ c_~A~0.offset .cse11 (* 4 (* v_~a~0_64 c_~M~0)))) (select (select .cse10 (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse11 v_arrayElimCell_25)))) (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0))) .cse9) (or (forall ((v_~a~0_64 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int)) (v_~b~0_62 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (let ((.cse12 (store |c_#memory_int| .cse2 (store .cse3 (+ .cse4 v_arrayElimCell_24) .cse5))) (.cse13 (* v_~b~0_62 4))) (= (select (select .cse12 c_~A~0.base) (+ c_~A~0.offset .cse13 (* 4 (* v_~a~0_64 c_~M~0)))) (select (select .cse12 (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse13 v_arrayElimCell_24)))) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0))) .cse6) (forall ((v_~b~0_62 Int)) (or (< c_~M~0 (+ v_~b~0_62 1)) (forall ((v_~a~0_64 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int)) (v_arrayElimCell_23 Int)) (let ((.cse16 (* v_~b~0_62 4)) (.cse17 (store |c_#memory_int| .cse2 (store .cse3 (+ .cse4 v_arrayElimCell_23) .cse5)))) (let ((.cse15 (select .cse17 (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset)))) (.cse14 (select (select .cse17 c_~A~0.base) (+ c_~A~0.offset .cse16 (* 4 (* v_~a~0_64 c_~M~0)))))) (or (= .cse14 (select .cse15 (+ .cse16 v_arrayElimCell_24))) (= (select .cse15 (+ .cse16 v_arrayElimCell_25)) .cse14))))) (= v_~a~0_64 c_thread2Thread1of1ForFork1_~i~1))) (< v_~b~0_62 0))) (forall ((v_~b~0_62 Int)) (or (< c_~M~0 (+ v_~b~0_62 1)) (forall ((v_~a~0_64 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int))) (let ((.cse21 (store |c_#memory_int| .cse2 (store .cse3 (+ .cse4 v_arrayElimCell_24) .cse5))) (.cse20 (* v_~b~0_62 4))) (let ((.cse18 (select (select .cse21 c_~A~0.base) (+ c_~A~0.offset .cse20 (* 4 (* v_~a~0_64 c_~M~0))))) (.cse19 (select .cse21 (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))))) (or (= .cse18 (select .cse19 (+ .cse20 v_arrayElimCell_25))) (= .cse18 (select .cse19 (+ .cse20 v_arrayElimCell_24))))))))) (< v_~b~0_62 0))))))) is different from false [2023-11-12 00:09:13,714 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset)))) (let ((.cse5 (= .cse1 c_~B~0.base))) (let ((.cse3 (select |c_#memory_int| .cse1)) (.cse4 (select (select |c_#memory_int| c_~F~0.base) (+ (* (* c_thread2Thread1of1ForFork1_~i~1 c_~M~0) 4) c_~F~0.offset))) (.cse8 (not .cse5))) (and (or (forall ((v_~a~0_64 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int)) (v_arrayElimCell_23 Int) (v_~b~0_62 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (let ((.cse0 (store |c_#memory_int| .cse1 (store .cse3 v_arrayElimCell_23 .cse4))) (.cse2 (* v_~b~0_62 4))) (= (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse2 v_arrayElimCell_24)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse2 (* 4 (* v_~a~0_64 c_~M~0)))))) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0) (= v_~a~0_64 c_thread2Thread1of1ForFork1_~i~1))) .cse5) (or (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_~a~0_64 Int) (v_ArrVal_663 (Array Int Int)) (v_~b~0_62 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (let ((.cse6 (store |c_#memory_int| .cse1 (store .cse3 v_arrayElimCell_24 .cse4))) (.cse7 (* v_~b~0_62 4))) (= (select (select .cse6 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse7 v_arrayElimCell_25)) (select (select .cse6 c_~A~0.base) (+ c_~A~0.offset .cse7 (* 4 (* v_~a~0_64 c_~M~0)))))) (< v_~a~0_64 0) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0))) .cse8) (forall ((v_~b~0_62 Int)) (or (forall ((v_~a~0_64 Int)) (or (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int))) (let ((.cse10 (* v_~b~0_62 4)) (.cse12 (store |c_#memory_int| .cse1 (store .cse3 v_arrayElimCell_24 .cse4)))) (let ((.cse9 (select .cse12 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset)))) (.cse11 (select (select .cse12 c_~A~0.base) (+ c_~A~0.offset .cse10 (* 4 (* v_~a~0_64 c_~M~0)))))) (or (= (select .cse9 (+ .cse10 v_arrayElimCell_24)) .cse11) (= (select .cse9 (+ .cse10 v_arrayElimCell_25)) .cse11))))) (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0))) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0))) (or (forall ((v_~a~0_64 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int)) (v_~b~0_62 Int)) (or (let ((.cse13 (store |c_#memory_int| .cse1 (store .cse3 v_arrayElimCell_24 .cse4))) (.cse14 (* v_~b~0_62 4))) (= (select (select .cse13 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse14 v_arrayElimCell_24)) (select (select .cse13 c_~A~0.base) (+ c_~A~0.offset .cse14 (* 4 (* v_~a~0_64 c_~M~0)))))) (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0))) .cse5) (forall ((v_~b~0_62 Int)) (or (forall ((v_~a~0_64 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int)) (v_arrayElimCell_23 Int)) (let ((.cse16 (* v_~b~0_62 4)) (.cse18 (store |c_#memory_int| .cse1 (store .cse3 v_arrayElimCell_23 .cse4)))) (let ((.cse15 (select .cse18 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset)))) (.cse17 (select (select .cse18 c_~A~0.base) (+ c_~A~0.offset .cse16 (* 4 (* v_~a~0_64 c_~M~0)))))) (or (= (select .cse15 (+ .cse16 v_arrayElimCell_24)) .cse17) (= (select .cse15 (+ .cse16 v_arrayElimCell_25)) .cse17))))) (= v_~a~0_64 c_thread2Thread1of1ForFork1_~i~1))) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0))) (or (forall ((v_arrayElimCell_25 Int) (v_~a~0_64 Int) (v_ArrVal_663 (Array Int Int)) (v_arrayElimCell_23 Int) (v_~b~0_62 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (let ((.cse19 (store |c_#memory_int| .cse1 (store .cse3 v_arrayElimCell_23 .cse4))) (.cse20 (* v_~b~0_62 4))) (= (select (select .cse19 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse20 v_arrayElimCell_25)) (select (select .cse19 c_~A~0.base) (+ c_~A~0.offset .cse20 (* 4 (* v_~a~0_64 c_~M~0)))))) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0) (= v_~a~0_64 c_thread2Thread1of1ForFork1_~i~1))) .cse8))))) is different from false [2023-11-12 00:09:19,423 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661))) (let ((.cse0 (select (select .cse3 c_~B~0.base) c_~B~0.offset))) (or (= c_~B~0.base .cse0) (forall ((v_~a~0_64 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int)) (v_arrayElimCell_23 Int) (v_~b~0_62 Int)) (or (= v_~a~0_64 0) (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (let ((.cse1 (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_660))) (store .cse4 .cse0 (store (select .cse4 .cse0) v_arrayElimCell_23 (select (select .cse4 c_~F~0.base) c_~F~0.offset))))) (.cse2 (* v_~b~0_62 4))) (= (select (select .cse1 c_~A~0.base) (+ c_~A~0.offset .cse2 (* 4 (* v_~a~0_64 c_~M~0)))) (select (select .cse1 (select (select (store .cse3 .cse0 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse2 v_arrayElimCell_24)))) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0))))))) (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int)) (v_~b~0_62 Int)) (or (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0) (forall ((v_~a~0_64 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int))) (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661))) (let ((.cse10 (select (select .cse9 c_~B~0.base) c_~B~0.offset))) (let ((.cse8 (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_660))) (store .cse11 .cse10 (store (select .cse11 .cse10) v_arrayElimCell_24 (select (select .cse11 c_~F~0.base) c_~F~0.offset))))) (.cse7 (* v_~b~0_62 4))) (let ((.cse5 (select (select .cse8 c_~A~0.base) (+ c_~A~0.offset .cse7 (* 4 (* v_~a~0_64 c_~M~0))))) (.cse6 (select .cse8 (select (select (store .cse9 .cse10 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))))) (or (= .cse5 (select .cse6 (+ .cse7 v_arrayElimCell_25))) (= .cse5 (select .cse6 (+ .cse7 v_arrayElimCell_24))))))))))))) (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int)) (v_~b~0_62 Int)) (or (forall ((v_~a~0_64 Int)) (or (= v_~a~0_64 0) (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int)) (v_arrayElimCell_23 Int)) (let ((.cse16 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661))) (let ((.cse17 (select (select .cse16 c_~B~0.base) c_~B~0.offset))) (let ((.cse15 (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_660))) (store .cse18 .cse17 (store (select .cse18 .cse17) v_arrayElimCell_23 (select (select .cse18 c_~F~0.base) c_~F~0.offset))))) (.cse14 (* v_~b~0_62 4))) (let ((.cse12 (select (select .cse15 c_~A~0.base) (+ c_~A~0.offset .cse14 (* 4 (* v_~a~0_64 c_~M~0))))) (.cse13 (select .cse15 (select (select (store .cse16 .cse17 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))))) (or (= .cse12 (select .cse13 (+ .cse14 v_arrayElimCell_25))) (= .cse12 (select .cse13 (+ .cse14 v_arrayElimCell_24))))))))) (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0))) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0))) (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int))) (let ((.cse22 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661))) (let ((.cse19 (select (select .cse22 c_~B~0.base) c_~B~0.offset))) (or (= c_~B~0.base .cse19) (forall ((v_~a~0_64 Int) (v_arrayElimCell_24 Int) (v_ArrVal_663 (Array Int Int)) (v_~b~0_62 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0) (let ((.cse20 (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_660))) (store .cse23 .cse19 (store (select .cse23 .cse19) v_arrayElimCell_24 (select (select .cse23 c_~F~0.base) c_~F~0.offset))))) (.cse21 (* v_~b~0_62 4))) (= (select (select .cse20 c_~A~0.base) (+ c_~A~0.offset .cse21 (* 4 (* v_~a~0_64 c_~M~0)))) (select (select .cse20 (select (select (store .cse22 .cse19 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse21 v_arrayElimCell_24)))))))))) (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int))) (let ((.cse27 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661))) (let ((.cse24 (select (select .cse27 c_~B~0.base) c_~B~0.offset))) (or (not (= c_~B~0.base .cse24)) (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_~a~0_64 Int) (v_ArrVal_663 (Array Int Int)) (v_~b~0_62 Int)) (or (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (let ((.cse25 (let ((.cse28 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_660))) (store .cse28 .cse24 (store (select .cse28 .cse24) v_arrayElimCell_24 (select (select .cse28 c_~F~0.base) c_~F~0.offset))))) (.cse26 (* v_~b~0_62 4))) (= (select (select .cse25 c_~A~0.base) (+ c_~A~0.offset .cse26 (* 4 (* v_~a~0_64 c_~M~0)))) (select (select .cse25 (select (select (store .cse27 .cse24 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse26 v_arrayElimCell_25)))) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0))))))) (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int))) (let ((.cse31 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661))) (let ((.cse32 (select (select .cse31 c_~B~0.base) c_~B~0.offset))) (or (forall ((v_arrayElimCell_25 Int) (v_~a~0_64 Int) (v_ArrVal_663 (Array Int Int)) (v_arrayElimCell_23 Int) (v_~b~0_62 Int)) (or (let ((.cse29 (let ((.cse33 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_660))) (store .cse33 .cse32 (store (select .cse33 .cse32) v_arrayElimCell_23 (select (select .cse33 c_~F~0.base) c_~F~0.offset))))) (.cse30 (* v_~b~0_62 4))) (= (select (select .cse29 c_~A~0.base) (+ c_~A~0.offset .cse30 (* 4 (* v_~a~0_64 c_~M~0)))) (select (select .cse29 (select (select (store .cse31 .cse32 v_ArrVal_663) c_~B~0.base) (+ (* v_~a~0_64 4) c_~B~0.offset))) (+ .cse30 v_arrayElimCell_25)))) (= v_~a~0_64 0) (< c_~N~0 (+ v_~a~0_64 1)) (< v_~a~0_64 0) (< c_~M~0 (+ v_~b~0_62 1)) (< v_~b~0_62 0))) (not (= c_~B~0.base .cse32))))))) is different from false