./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:56:23,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:56:23,719 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:56:23,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:56:23,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:56:23,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:56:23,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:56:23,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:56:23,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:56:23,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:56:23,794 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:56:23,795 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:56:23,796 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:56:23,798 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:56:23,799 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:56:23,799 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:56:23,800 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:56:23,801 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:56:23,801 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:56:23,802 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:56:23,803 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:56:23,803 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:56:23,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:56:23,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:56:23,806 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:56:23,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:56:23,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:56:23,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:56:23,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:56:23,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:56:23,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:56:23,811 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:56:23,811 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:56:23,812 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:56:23,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:56:23,813 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:56:23,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:56:23,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:56:23,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:56:23,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:23,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:56:23,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:56:23,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:56:23,816 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:56:23,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:56:23,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:56:23,817 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:56:23,818 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:56:23,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:56:23,818 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_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2023-11-24 23:56:24,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:56:24,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:56:24,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:56:24,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:56:24,227 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:56:24,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-24 23:56:27,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:56:27,665 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:56:27,666 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-24 23:56:27,678 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/data/d452b0818/c4e2ddefef7a488ba77bc31eb90f4696/FLAG8a020fb8c [2023-11-24 23:56:27,697 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/data/d452b0818/c4e2ddefef7a488ba77bc31eb90f4696 [2023-11-24 23:56:27,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:56:27,705 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:56:27,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:27,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:56:27,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:56:27,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:27" (1/1) ... [2023-11-24 23:56:27,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e3c7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:27, skipping insertion in model container [2023-11-24 23:56:27,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:27" (1/1) ... [2023-11-24 23:56:27,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:56:28,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:28,078 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:56:28,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:28,174 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:56:28,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28 WrapperNode [2023-11-24 23:56:28,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:28,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:28,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:56:28,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:56:28,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,267 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 347 [2023-11-24 23:56:28,269 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:28,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:56:28,270 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:56:28,270 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:56:28,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:56:28,363 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:56:28,363 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:56:28,363 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:56:28,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (1/1) ... [2023-11-24 23:56:28,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:28,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:28,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:56:28,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:56:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:56:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:56:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:56:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:56:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 23:56:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 23:56:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 23:56:28,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 23:56:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:56:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:56:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:56:28,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:56:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:56:28,477 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 23:56:28,635 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:56:28,638 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:56:29,366 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:56:29,837 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:56:29,838 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-24 23:56:29,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:29 BoogieIcfgContainer [2023-11-24 23:56:29,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:56:29,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:56:29,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:56:29,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:56:29,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:56:27" (1/3) ... [2023-11-24 23:56:29,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffcd4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:29, skipping insertion in model container [2023-11-24 23:56:29,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:28" (2/3) ... [2023-11-24 23:56:29,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffcd4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:29, skipping insertion in model container [2023-11-24 23:56:29,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:29" (3/3) ... [2023-11-24 23:56:29,853 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-11-24 23:56:29,864 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 23:56:29,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:56:29,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-24 23:56:29,877 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 23:56:29,971 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 23:56:30,013 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 99 transitions, 212 flow [2023-11-24 23:56:30,164 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 923 states, 857 states have (on average 2.7712952158693116) internal successors, (2375), 922 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:30,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:56:30,198 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;@3f197b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:56:30,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-24 23:56:30,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 923 states, 857 states have (on average 2.7712952158693116) internal successors, (2375), 922 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:56:30,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:30,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 23:56:30,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:30,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:30,223 INFO L85 PathProgramCache]: Analyzing trace with hash 33389, now seen corresponding path program 1 times [2023-11-24 23:56:30,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:30,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894742833] [2023-11-24 23:56:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:30,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:30,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:30,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894742833] [2023-11-24 23:56:30,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894742833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:30,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:30,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:56:30,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466739396] [2023-11-24 23:56:30,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:30,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:30,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:30,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:30,498 INFO L87 Difference]: Start difference. First operand has 923 states, 857 states have (on average 2.7712952158693116) internal successors, (2375), 922 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:30,675 INFO L93 Difference]: Finished difference Result 919 states and 2371 transitions. [2023-11-24 23:56:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-24 23:56:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:30,704 INFO L225 Difference]: With dead ends: 919 [2023-11-24 23:56:30,704 INFO L226 Difference]: Without dead ends: 904 [2023-11-24 23:56:30,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:30,710 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:30,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 46 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-11-24 23:56:30,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2023-11-24 23:56:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 842 states have (on average 2.7672209026128267) internal successors, (2330), 903 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2330 transitions. [2023-11-24 23:56:30,823 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2330 transitions. Word has length 2 [2023-11-24 23:56:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:30,823 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 2330 transitions. [2023-11-24 23:56:30,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2330 transitions. [2023-11-24 23:56:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:56:30,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:30,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:56:30,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:56:30,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:30,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1036071, now seen corresponding path program 1 times [2023-11-24 23:56:30,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:30,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754590978] [2023-11-24 23:56:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:30,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:30,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:30,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754590978] [2023-11-24 23:56:30,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754590978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:30,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:30,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:56:30,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546953127] [2023-11-24 23:56:30,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:30,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:30,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:30,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:30,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:30,922 INFO L87 Difference]: Start difference. First operand 904 states and 2330 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:31,002 INFO L93 Difference]: Finished difference Result 902 states and 2328 transitions. [2023-11-24 23:56:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:31,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-24 23:56:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:31,012 INFO L225 Difference]: With dead ends: 902 [2023-11-24 23:56:31,012 INFO L226 Difference]: Without dead ends: 902 [2023-11-24 23:56:31,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:31,014 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 85 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:31,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 44 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:31,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-11-24 23:56:31,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 902. [2023-11-24 23:56:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 842 states have (on average 2.7648456057007125) internal successors, (2328), 901 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 2328 transitions. [2023-11-24 23:56:31,057 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 2328 transitions. Word has length 3 [2023-11-24 23:56:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:31,057 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 2328 transitions. [2023-11-24 23:56:31,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 2328 transitions. [2023-11-24 23:56:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:56:31,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:31,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:56:31,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:56:31,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:31,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:31,060 INFO L85 PathProgramCache]: Analyzing trace with hash 995697060, now seen corresponding path program 1 times [2023-11-24 23:56:31,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:31,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132815181] [2023-11-24 23:56:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:31,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:31,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:31,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132815181] [2023-11-24 23:56:31,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132815181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:31,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:31,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820631694] [2023-11-24 23:56:31,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:31,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:31,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:31,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:31,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:31,243 INFO L87 Difference]: Start difference. First operand 902 states and 2328 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:31,403 INFO L93 Difference]: Finished difference Result 908 states and 2336 transitions. [2023-11-24 23:56:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:56:31,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 23:56:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:31,412 INFO L225 Difference]: With dead ends: 908 [2023-11-24 23:56:31,413 INFO L226 Difference]: Without dead ends: 908 [2023-11-24 23:56:31,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:56:31,421 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:31,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 130 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:31,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2023-11-24 23:56:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2023-11-24 23:56:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 848 states have (on average 2.7547169811320753) internal successors, (2336), 907 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 2336 transitions. [2023-11-24 23:56:31,461 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 2336 transitions. Word has length 5 [2023-11-24 23:56:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:31,462 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 2336 transitions. [2023-11-24 23:56:31,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 2336 transitions. [2023-11-24 23:56:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:56:31,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:31,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:56:31,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:56:31,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:31,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:31,467 INFO L85 PathProgramCache]: Analyzing trace with hash 995697071, now seen corresponding path program 1 times [2023-11-24 23:56:31,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:31,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974465086] [2023-11-24 23:56:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:31,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:31,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:31,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974465086] [2023-11-24 23:56:31,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974465086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:31,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:31,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:56:31,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169328193] [2023-11-24 23:56:31,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:31,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:31,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:31,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:31,569 INFO L87 Difference]: Start difference. First operand 908 states and 2336 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:31,654 INFO L93 Difference]: Finished difference Result 906 states and 2334 transitions. [2023-11-24 23:56:31,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:31,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 23:56:31,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:31,663 INFO L225 Difference]: With dead ends: 906 [2023-11-24 23:56:31,664 INFO L226 Difference]: Without dead ends: 906 [2023-11-24 23:56:31,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:31,665 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:31,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 40 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:31,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-24 23:56:31,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 906. [2023-11-24 23:56:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 848 states have (on average 2.7523584905660377) internal successors, (2334), 905 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 2334 transitions. [2023-11-24 23:56:31,702 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 2334 transitions. Word has length 5 [2023-11-24 23:56:31,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:31,703 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 2334 transitions. [2023-11-24 23:56:31,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 2334 transitions. [2023-11-24 23:56:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:56:31,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:31,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:56:31,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:56:31,705 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:31,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash 801839153, now seen corresponding path program 1 times [2023-11-24 23:56:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233846108] [2023-11-24 23:56:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:31,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:31,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233846108] [2023-11-24 23:56:31,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233846108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:31,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:31,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:56:31,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295239564] [2023-11-24 23:56:31,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:31,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:31,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:31,756 INFO L87 Difference]: Start difference. First operand 906 states and 2334 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:31,834 INFO L93 Difference]: Finished difference Result 904 states and 2332 transitions. [2023-11-24 23:56:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:31,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 23:56:31,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:31,843 INFO L225 Difference]: With dead ends: 904 [2023-11-24 23:56:31,843 INFO L226 Difference]: Without dead ends: 904 [2023-11-24 23:56:31,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:31,844 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 78 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:31,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 40 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:31,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-11-24 23:56:31,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2023-11-24 23:56:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 848 states have (on average 2.75) internal successors, (2332), 903 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2332 transitions. [2023-11-24 23:56:31,912 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2332 transitions. Word has length 6 [2023-11-24 23:56:31,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:31,912 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 2332 transitions. [2023-11-24 23:56:31,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2332 transitions. [2023-11-24 23:56:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:56:31,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:31,913 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:31,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:56:31,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:31,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:31,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1767991904, now seen corresponding path program 1 times [2023-11-24 23:56:31,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:31,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826824521] [2023-11-24 23:56:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:31,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:32,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:32,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826824521] [2023-11-24 23:56:32,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826824521] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:32,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298131335] [2023-11-24 23:56:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:32,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:32,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:32,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:32,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:56:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:32,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:32,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:32,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:32,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298131335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:32,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:56:32,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-24 23:56:32,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042613815] [2023-11-24 23:56:32,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:32,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:56:32,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:32,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:56:32,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:32,217 INFO L87 Difference]: Start difference. First operand 904 states and 2332 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:32,386 INFO L93 Difference]: Finished difference Result 902 states and 2330 transitions. [2023-11-24 23:56:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:56:32,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-24 23:56:32,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:32,394 INFO L225 Difference]: With dead ends: 902 [2023-11-24 23:56:32,395 INFO L226 Difference]: Without dead ends: 902 [2023-11-24 23:56:32,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:56:32,396 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 19 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:32,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 108 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:32,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-11-24 23:56:32,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 902. [2023-11-24 23:56:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 848 states have (on average 2.7476415094339623) internal successors, (2330), 901 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 2330 transitions. [2023-11-24 23:56:32,432 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 2330 transitions. Word has length 8 [2023-11-24 23:56:32,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:32,433 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 2330 transitions. [2023-11-24 23:56:32,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:32,433 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 2330 transitions. [2023-11-24 23:56:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:56:32,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:32,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-24 23:56:32,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:32,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:32,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:32,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:32,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1026824793, now seen corresponding path program 1 times [2023-11-24 23:56:32,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:32,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855594953] [2023-11-24 23:56:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:32,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:32,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:32,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855594953] [2023-11-24 23:56:32,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855594953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:32,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905366495] [2023-11-24 23:56:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:32,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:32,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:32,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:32,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:56:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:32,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:32,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:32,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905366495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1621173350] [2023-11-24 23:56:33,019 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-24 23:56:33,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:56:33,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-24 23:56:33,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143697903] [2023-11-24 23:56:33,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:33,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:56:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:56:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:56:33,030 INFO L87 Difference]: Start difference. First operand 902 states and 2330 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 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) [2023-11-24 23:56:33,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:33,318 INFO L93 Difference]: Finished difference Result 920 states and 2354 transitions. [2023-11-24 23:56:33,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:56:33,318 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 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 9 [2023-11-24 23:56:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:33,326 INFO L225 Difference]: With dead ends: 920 [2023-11-24 23:56:33,326 INFO L226 Difference]: Without dead ends: 920 [2023-11-24 23:56:33,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:56:33,327 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 22 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:33,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 264 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:56:33,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2023-11-24 23:56:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2023-11-24 23:56:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 866 states have (on average 2.7182448036951503) internal successors, (2354), 919 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 2354 transitions. [2023-11-24 23:56:33,361 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 2354 transitions. Word has length 9 [2023-11-24 23:56:33,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:33,361 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 2354 transitions. [2023-11-24 23:56:33,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 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) [2023-11-24 23:56:33,362 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 2354 transitions. [2023-11-24 23:56:33,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:56:33,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:33,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:33,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:33,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:56:33,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:33,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2071642211, now seen corresponding path program 1 times [2023-11-24 23:56:33,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:33,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775433464] [2023-11-24 23:56:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:33,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:33,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775433464] [2023-11-24 23:56:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775433464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:33,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:33,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:33,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494386027] [2023-11-24 23:56:33,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:33,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:33,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:33,666 INFO L87 Difference]: Start difference. First operand 920 states and 2354 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:33,796 INFO L93 Difference]: Finished difference Result 926 states and 2362 transitions. [2023-11-24 23:56:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:56:33,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 23:56:33,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:33,804 INFO L225 Difference]: With dead ends: 926 [2023-11-24 23:56:33,804 INFO L226 Difference]: Without dead ends: 926 [2023-11-24 23:56:33,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:56:33,808 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:33,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 112 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-24 23:56:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2023-11-24 23:56:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 872 states have (on average 2.708715596330275) internal successors, (2362), 925 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2362 transitions. [2023-11-24 23:56:33,843 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2362 transitions. Word has length 11 [2023-11-24 23:56:33,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:33,843 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 2362 transitions. [2023-11-24 23:56:33,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:33,843 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2362 transitions. [2023-11-24 23:56:33,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:56:33,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:33,845 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:33,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:56:33,845 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:33,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1909049025, now seen corresponding path program 1 times [2023-11-24 23:56:33,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:33,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99093306] [2023-11-24 23:56:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:33,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:33,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:33,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99093306] [2023-11-24 23:56:33,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99093306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:33,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:33,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:33,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630283674] [2023-11-24 23:56:33,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:33,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:33,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:33,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:33,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:33,976 INFO L87 Difference]: Start difference. First operand 926 states and 2362 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:34,098 INFO L93 Difference]: Finished difference Result 926 states and 2361 transitions. [2023-11-24 23:56:34,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:56:34,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-24 23:56:34,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:34,107 INFO L225 Difference]: With dead ends: 926 [2023-11-24 23:56:34,107 INFO L226 Difference]: Without dead ends: 926 [2023-11-24 23:56:34,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:56:34,110 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 84 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:34,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 76 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:34,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-24 23:56:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2023-11-24 23:56:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 872 states have (on average 2.7075688073394497) internal successors, (2361), 925 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2361 transitions. [2023-11-24 23:56:34,153 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2361 transitions. Word has length 14 [2023-11-24 23:56:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:34,153 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 2361 transitions. [2023-11-24 23:56:34,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2361 transitions. [2023-11-24 23:56:34,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:56:34,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:34,155 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:34,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 23:56:34,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:34,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1702784635, now seen corresponding path program 1 times [2023-11-24 23:56:34,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:34,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158842579] [2023-11-24 23:56:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:34,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:56:34,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:34,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158842579] [2023-11-24 23:56:34,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158842579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:34,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:34,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973040726] [2023-11-24 23:56:34,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:34,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:34,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:34,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:34,277 INFO L87 Difference]: Start difference. First operand 926 states and 2361 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2023-11-24 23:56:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:34,391 INFO L93 Difference]: Finished difference Result 926 states and 2360 transitions. [2023-11-24 23:56:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:56:34,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 17 [2023-11-24 23:56:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:34,399 INFO L225 Difference]: With dead ends: 926 [2023-11-24 23:56:34,399 INFO L226 Difference]: Without dead ends: 926 [2023-11-24 23:56:34,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:56:34,400 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 78 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:34,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 76 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:34,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-24 23:56:34,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2023-11-24 23:56:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 872 states have (on average 2.706422018348624) internal successors, (2360), 925 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2360 transitions. [2023-11-24 23:56:34,435 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2360 transitions. Word has length 17 [2023-11-24 23:56:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:34,435 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 2360 transitions. [2023-11-24 23:56:34,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2023-11-24 23:56:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2360 transitions. [2023-11-24 23:56:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 23:56:34,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:34,437 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2023-11-24 23:56:34,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 23:56:34,437 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:34,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1291933213, now seen corresponding path program 2 times [2023-11-24 23:56:34,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:34,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597189394] [2023-11-24 23:56:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:34,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:34,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:34,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597189394] [2023-11-24 23:56:34,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597189394] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:34,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505037775] [2023-11-24 23:56:34,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:56:34,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:34,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:34,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:34,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:56:34,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-24 23:56:34,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:56:34,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:56:34,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-24 23:56:34,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-24 23:56:34,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505037775] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2119225818] [2023-11-24 23:56:34,875 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-24 23:56:34,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:56:34,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 13 [2023-11-24 23:56:34,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581742448] [2023-11-24 23:56:34,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:34,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 23:56:34,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:34,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 23:56:34,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-24 23:56:34,878 INFO L87 Difference]: Start difference. First operand 926 states and 2360 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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) [2023-11-24 23:56:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:35,293 INFO L93 Difference]: Finished difference Result 930 states and 2366 transitions. [2023-11-24 23:56:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:35,294 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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 18 [2023-11-24 23:56:35,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:35,301 INFO L225 Difference]: With dead ends: 930 [2023-11-24 23:56:35,302 INFO L226 Difference]: Without dead ends: 930 [2023-11-24 23:56:35,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2023-11-24 23:56:35,303 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 57 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:35,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 288 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:56:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2023-11-24 23:56:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 902. [2023-11-24 23:56:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 850 states have (on average 2.7411764705882353) internal successors, (2330), 901 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 2330 transitions. [2023-11-24 23:56:35,337 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 2330 transitions. Word has length 18 [2023-11-24 23:56:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:35,337 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 2330 transitions. [2023-11-24 23:56:35,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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) [2023-11-24 23:56:35,337 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 2330 transitions. [2023-11-24 23:56:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:56:35,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:35,338 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:35,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:35,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:56:35,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:35,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash -93957993, now seen corresponding path program 1 times [2023-11-24 23:56:35,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:35,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740431483] [2023-11-24 23:56:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:35,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:35,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:35,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740431483] [2023-11-24 23:56:35,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740431483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:35,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662674198] [2023-11-24 23:56:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:35,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:35,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:35,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:35,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:56:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:35,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:35,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:35,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:35,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662674198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:35,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:56:35,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-24 23:56:35,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524183670] [2023-11-24 23:56:35,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:35,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:56:35,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:35,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:56:35,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:35,827 INFO L87 Difference]: Start difference. First operand 902 states and 2330 transitions. Second operand has 6 states, 5 states have (on average 4.0) 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) [2023-11-24 23:56:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:36,021 INFO L93 Difference]: Finished difference Result 900 states and 2328 transitions. [2023-11-24 23:56:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:56:36,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) 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 20 [2023-11-24 23:56:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:36,030 INFO L225 Difference]: With dead ends: 900 [2023-11-24 23:56:36,030 INFO L226 Difference]: Without dead ends: 900 [2023-11-24 23:56:36,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:56:36,031 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 15 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:36,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 160 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:56:36,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2023-11-24 23:56:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 900. [2023-11-24 23:56:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 850 states have (on average 2.7388235294117647) internal successors, (2328), 899 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2328 transitions. [2023-11-24 23:56:36,066 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2328 transitions. Word has length 20 [2023-11-24 23:56:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:36,066 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 2328 transitions. [2023-11-24 23:56:36,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) 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) [2023-11-24 23:56:36,066 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2328 transitions. [2023-11-24 23:56:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:56:36,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:36,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:36,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:36,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:56:36,276 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:36,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:36,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1382270535, now seen corresponding path program 1 times [2023-11-24 23:56:36,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:36,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970041574] [2023-11-24 23:56:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:36,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:36,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970041574] [2023-11-24 23:56:36,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970041574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:36,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782224734] [2023-11-24 23:56:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:36,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:36,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:36,380 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:36,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:56:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:36,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:36,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:36,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782224734] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:36,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [939125261] [2023-11-24 23:56:36,606 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-24 23:56:36,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:56:36,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-24 23:56:36,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889346630] [2023-11-24 23:56:36,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:36,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:56:36,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:36,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:56:36,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:56:36,610 INFO L87 Difference]: Start difference. First operand 900 states and 2328 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:36,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:36,882 INFO L93 Difference]: Finished difference Result 918 states and 2352 transitions. [2023-11-24 23:56:36,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:56:36,882 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 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 [2023-11-24 23:56:36,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:36,890 INFO L225 Difference]: With dead ends: 918 [2023-11-24 23:56:36,891 INFO L226 Difference]: Without dead ends: 918 [2023-11-24 23:56:36,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:56:36,892 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:36,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 202 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:56:36,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2023-11-24 23:56:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2023-11-24 23:56:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 868 states have (on average 2.7096774193548385) internal successors, (2352), 917 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:36,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 2352 transitions. [2023-11-24 23:56:36,946 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 2352 transitions. Word has length 21 [2023-11-24 23:56:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:36,948 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 2352 transitions. [2023-11-24 23:56:36,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 2352 transitions. [2023-11-24 23:56:36,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 23:56:36,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:36,950 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] [2023-11-24 23:56:36,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:37,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:37,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:37,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:37,156 INFO L85 PathProgramCache]: Analyzing trace with hash 332964421, now seen corresponding path program 1 times [2023-11-24 23:56:37,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:37,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733591910] [2023-11-24 23:56:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:37,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:37,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:37,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733591910] [2023-11-24 23:56:37,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733591910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:37,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:37,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:37,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002802894] [2023-11-24 23:56:37,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:37,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:37,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:37,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:37,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:37,266 INFO L87 Difference]: Start difference. First operand 918 states and 2352 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:37,456 INFO L93 Difference]: Finished difference Result 1254 states and 3254 transitions. [2023-11-24 23:56:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:56:37,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-24 23:56:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:37,468 INFO L225 Difference]: With dead ends: 1254 [2023-11-24 23:56:37,469 INFO L226 Difference]: Without dead ends: 1254 [2023-11-24 23:56:37,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:37,470 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 62 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:37,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 122 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:56:37,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2023-11-24 23:56:37,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1044. [2023-11-24 23:56:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1001 states have (on average 2.7152847152847155) internal successors, (2718), 1043 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 2718 transitions. [2023-11-24 23:56:37,517 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 2718 transitions. Word has length 24 [2023-11-24 23:56:37,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:37,518 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 2718 transitions. [2023-11-24 23:56:37,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 2718 transitions. [2023-11-24 23:56:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 23:56:37,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:37,526 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] [2023-11-24 23:56:37,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 23:56:37,526 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:37,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:37,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1731963578, now seen corresponding path program 1 times [2023-11-24 23:56:37,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:37,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528699821] [2023-11-24 23:56:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:37,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:37,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:37,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528699821] [2023-11-24 23:56:37,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528699821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:37,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:37,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:37,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274743413] [2023-11-24 23:56:37,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:37,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:37,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:37,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:37,715 INFO L87 Difference]: Start difference. First operand 1044 states and 2718 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 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) [2023-11-24 23:56:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:37,819 INFO L93 Difference]: Finished difference Result 1044 states and 2717 transitions. [2023-11-24 23:56:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:56:37,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 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 [2023-11-24 23:56:37,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:37,829 INFO L225 Difference]: With dead ends: 1044 [2023-11-24 23:56:37,829 INFO L226 Difference]: Without dead ends: 1044 [2023-11-24 23:56:37,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:56:37,831 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 67 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:37,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 66 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:37,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2023-11-24 23:56:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2023-11-24 23:56:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1001 states have (on average 2.7142857142857144) internal successors, (2717), 1043 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 2717 transitions. [2023-11-24 23:56:37,868 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 2717 transitions. Word has length 25 [2023-11-24 23:56:37,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:37,869 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 2717 transitions. [2023-11-24 23:56:37,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 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) [2023-11-24 23:56:37,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 2717 transitions. [2023-11-24 23:56:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 23:56:37,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:37,873 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] [2023-11-24 23:56:37,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 23:56:37,873 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:37,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:37,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1182819580, now seen corresponding path program 1 times [2023-11-24 23:56:37,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:37,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705280983] [2023-11-24 23:56:37,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:37,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:56:38,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:38,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705280983] [2023-11-24 23:56:38,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705280983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:38,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488346188] [2023-11-24 23:56:38,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:38,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:38,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:38,048 INFO L87 Difference]: Start difference. First operand 1044 states and 2717 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:38,175 INFO L93 Difference]: Finished difference Result 1044 states and 2716 transitions. [2023-11-24 23:56:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:56:38,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-11-24 23:56:38,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:38,185 INFO L225 Difference]: With dead ends: 1044 [2023-11-24 23:56:38,185 INFO L226 Difference]: Without dead ends: 1044 [2023-11-24 23:56:38,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:56:38,186 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 61 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:38,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 66 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2023-11-24 23:56:38,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2023-11-24 23:56:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1001 states have (on average 2.7132867132867133) internal successors, (2716), 1043 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 2716 transitions. [2023-11-24 23:56:38,222 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 2716 transitions. Word has length 28 [2023-11-24 23:56:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:38,223 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 2716 transitions. [2023-11-24 23:56:38,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 2716 transitions. [2023-11-24 23:56:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 23:56:38,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:38,224 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:38,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 23:56:38,225 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:38,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:38,225 INFO L85 PathProgramCache]: Analyzing trace with hash -558870575, now seen corresponding path program 2 times [2023-11-24 23:56:38,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:38,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861163618] [2023-11-24 23:56:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:38,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-24 23:56:38,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861163618] [2023-11-24 23:56:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861163618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354420952] [2023-11-24 23:56:38,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:56:38,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:38,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:38,468 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:38,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:56:38,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-24 23:56:38,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:56:38,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:56:38,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-24 23:56:38,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-24 23:56:38,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354420952] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:38,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1387683014] [2023-11-24 23:56:38,741 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-24 23:56:38,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:56:38,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 12 [2023-11-24 23:56:38,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944836060] [2023-11-24 23:56:38,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:38,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:56:38,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:56:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:56:38,744 INFO L87 Difference]: Start difference. First operand 1044 states and 2716 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:39,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:39,234 INFO L93 Difference]: Finished difference Result 2071 states and 5411 transitions. [2023-11-24 23:56:39,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 23:56:39,234 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 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 30 [2023-11-24 23:56:39,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:39,250 INFO L225 Difference]: With dead ends: 2071 [2023-11-24 23:56:39,250 INFO L226 Difference]: Without dead ends: 2071 [2023-11-24 23:56:39,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-11-24 23:56:39,251 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 137 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:39,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 253 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:56:39,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-11-24 23:56:39,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1035. [2023-11-24 23:56:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 994 states have (on average 2.7193158953722336) internal successors, (2703), 1034 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:39,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2703 transitions. [2023-11-24 23:56:39,323 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2703 transitions. Word has length 30 [2023-11-24 23:56:39,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:39,323 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 2703 transitions. [2023-11-24 23:56:39,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:39,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2703 transitions. [2023-11-24 23:56:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-24 23:56:39,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:39,326 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, 1, 1, 1] [2023-11-24 23:56:39,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:39,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-24 23:56:39,532 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:39,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1681370484, now seen corresponding path program 1 times [2023-11-24 23:56:39,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846942597] [2023-11-24 23:56:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:39,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:40,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846942597] [2023-11-24 23:56:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846942597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629172208] [2023-11-24 23:56:40,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:40,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:40,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:40,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:40,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:56:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:40,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-24 23:56:40,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:40,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 23:56:41,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 23:56:41,279 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-24 23:56:41,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-24 23:56:41,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:56:41,426 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 23:56:41,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 23:56:41,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:56:41,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:56:41,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:56:41,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-24 23:56:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:41,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:46,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:56:46,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-11-24 23:56:46,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:56:46,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 147 [2023-11-24 23:56:46,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 112 [2023-11-24 23:56:46,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 100 [2023-11-24 23:56:46,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-11-24 23:56:46,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:56:46,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 196 treesize of output 233 [2023-11-24 23:56:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:47,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629172208] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:47,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872576962] [2023-11-24 23:56:47,304 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-24 23:56:47,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:56:47,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 28 [2023-11-24 23:56:47,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519882809] [2023-11-24 23:56:47,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:47,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-24 23:56:47,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:47,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-24 23:56:47,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=732, Unknown=10, NotChecked=0, Total=870 [2023-11-24 23:56:47,308 INFO L87 Difference]: Start difference. First operand 1035 states and 2703 transitions. Second operand has 30 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:50,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-24 23:56:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:52,834 INFO L93 Difference]: Finished difference Result 2375 states and 6345 transitions. [2023-11-24 23:56:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-24 23:56:52,835 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 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 31 [2023-11-24 23:56:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:52,851 INFO L225 Difference]: With dead ends: 2375 [2023-11-24 23:56:52,852 INFO L226 Difference]: Without dead ends: 2375 [2023-11-24 23:56:52,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=332, Invalid=1872, Unknown=52, NotChecked=0, Total=2256 [2023-11-24 23:56:52,853 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 473 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 28 mSolverCounterUnsat, 61 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 61 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:52,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 635 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1143 Invalid, 61 Unknown, 0 Unchecked, 3.2s Time] [2023-11-24 23:56:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2023-11-24 23:56:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1212. [2023-11-24 23:56:52,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1171 states have (on average 2.6737830913748932) internal successors, (3131), 1211 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 3131 transitions. [2023-11-24 23:56:52,911 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 3131 transitions. Word has length 31 [2023-11-24 23:56:52,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:52,912 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 3131 transitions. [2023-11-24 23:56:52,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 3131 transitions. [2023-11-24 23:56:52,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:56:52,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:52,914 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, 1, 1, 1, 1] [2023-11-24 23:56:52,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:53,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:53,125 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:56:53,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:53,126 INFO L85 PathProgramCache]: Analyzing trace with hash -643921099, now seen corresponding path program 1 times [2023-11-24 23:56:53,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:53,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024511749] [2023-11-24 23:56:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:53,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:54,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:54,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024511749] [2023-11-24 23:56:54,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024511749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:54,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74791869] [2023-11-24 23:56:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:54,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:54,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:54,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:54,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:56:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:54,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-24 23:56:54,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:54,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 23:56:54,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 23:56:55,091 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-24 23:56:55,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-24 23:56:55,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:56:55,293 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 23:56:55,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 23:56:55,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:56:55,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:56:55,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:56:55,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:56:55,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:56:55,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-24 23:56:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:55,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:55,620 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_423 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_423) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset)) 9223372039002259456)) is different from false [2023-11-24 23:56:55,639 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_423 (Array Int Int)) (v_ArrVal_422 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_423) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset)) 9223372039002259456)) is different from false [2023-11-24 23:56:55,663 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_421 (Array Int Int)) (v_ArrVal_423 (Array Int Int)) (v_ArrVal_422 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_423) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset)) 9223372039002259456)) is different from false [2023-11-24 23:56:56,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:56:56,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-11-24 23:56:56,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:56:56,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 309 treesize of output 293 [2023-11-24 23:56:56,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 64 [2023-11-24 23:56:56,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 118 [2023-11-24 23:56:56,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2023-11-24 23:56:56,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:56:56,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 61 [2023-11-24 23:56:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-24 23:56:56,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74791869] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853145703] [2023-11-24 23:56:56,692 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-24 23:56:56,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:56:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-11-24 23:56:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450663383] [2023-11-24 23:56:56,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:56,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-24 23:56:56,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:56,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-24 23:56:56,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=688, Unknown=4, NotChecked=168, Total=992 [2023-11-24 23:56:56,700 INFO L87 Difference]: Start difference. First operand 1212 states and 3131 transitions. Second operand has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:58,448 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_3~0 4) c_~get_5~0.offset)) (.cse1 (+ |c_#StackHeapBarrier| 1))) (and (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_111| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_111|) 0)) (forall ((v_ArrVal_421 (Array Int Int)) (v_ArrVal_423 (Array Int Int)) (v_ArrVal_422 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_111| v_ArrVal_421) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_423) c_~get_5~0.base) .cse0) 9223372039002259456)))) (<= .cse1 |c_ULTIMATE.start_main_~#t1~0#1.base|) (forall ((v_ArrVal_421 (Array Int Int)) (v_ArrVal_423 (Array Int Int)) (v_ArrVal_422 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_423) c_~get_5~0.base) .cse0) 9223372039002259456)) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_111| Int) (v_ArrVal_421 (Array Int Int)) (v_ArrVal_420 (Array Int Int)) (v_ArrVal_423 (Array Int Int)) (v_ArrVal_422 (Array Int Int))) (or (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_420) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_111| v_ArrVal_421) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_423) c_~get_5~0.base) .cse0) 9223372039002259456) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_111|) 0)))) (<= 0 c_~id_3~0) (<= .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base|))) is different from false [2023-11-24 23:57:00,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:00,104 INFO L93 Difference]: Finished difference Result 5345 states and 14003 transitions. [2023-11-24 23:57:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 23:57:00,104 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 0 states have call successors, (0), 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 32 [2023-11-24 23:57:00,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:00,132 INFO L225 Difference]: With dead ends: 5345 [2023-11-24 23:57:00,132 INFO L226 Difference]: Without dead ends: 5345 [2023-11-24 23:57:00,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=273, Invalid=1542, Unknown=7, NotChecked=340, Total=2162 [2023-11-24 23:57:00,134 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 592 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 28 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 3002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 1594 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:00,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1004 Invalid, 3002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1373 Invalid, 7 Unknown, 1594 Unchecked, 2.5s Time] [2023-11-24 23:57:00,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2023-11-24 23:57:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 1294. [2023-11-24 23:57:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1253 states have (on average 2.6975259377494014) internal successors, (3380), 1293 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 3380 transitions. [2023-11-24 23:57:00,220 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 3380 transitions. Word has length 32 [2023-11-24 23:57:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:00,221 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 3380 transitions. [2023-11-24 23:57:00,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:00,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 3380 transitions. [2023-11-24 23:57:00,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:57:00,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:00,223 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, 1, 1, 1, 1] [2023-11-24 23:57:00,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:00,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:00,429 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:57:00,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:00,429 INFO L85 PathProgramCache]: Analyzing trace with hash -582908105, now seen corresponding path program 1 times [2023-11-24 23:57:00,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:00,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224044306] [2023-11-24 23:57:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:00,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:01,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:01,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224044306] [2023-11-24 23:57:01,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224044306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:01,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886976302] [2023-11-24 23:57:01,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:01,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:01,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:01,529 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:01,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:57:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:01,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-24 23:57:01,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:01,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 23:57:01,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 23:57:02,122 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-24 23:57:02,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-24 23:57:02,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-24 23:57:02,271 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 23:57:02,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 23:57:02,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-24 23:57:02,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:57:02,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-24 23:57:02,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-24 23:57:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:02,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:57:02,552 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_473 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_473) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset)) 4294967296))) is different from false [2023-11-24 23:57:02,566 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_472 (Array Int Int)) (v_ArrVal_473 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_472) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_473) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset)) 4294967296))) is different from false [2023-11-24 23:57:02,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:57:02,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-11-24 23:57:02,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:57:02,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 81 [2023-11-24 23:57:02,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2023-11-24 23:57:02,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-11-24 23:57:03,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:57:03,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2023-11-24 23:57:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-24 23:57:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886976302] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:57:03,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1064532603] [2023-11-24 23:57:03,209 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-24 23:57:03,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:57:03,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-11-24 23:57:03,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083382440] [2023-11-24 23:57:03,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:57:03,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-24 23:57:03,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:03,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-24 23:57:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=691, Unknown=3, NotChecked=110, Total=930 [2023-11-24 23:57:03,213 INFO L87 Difference]: Start difference. First operand 1294 states and 3380 transitions. Second operand has 31 states, 30 states have (on average 2.8) internal successors, (84), 30 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:08,613 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_3~0 4) c_~get_5~0.offset))) (and (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#t1~0#1.base|) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_113| Int)) (or (forall ((v_ArrVal_472 (Array Int Int)) (v_ArrVal_473 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_113| v_ArrVal_472) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_473) c_~get_5~0.base) .cse0) 4294967296))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_113|) 0)))) (forall ((v_ArrVal_472 (Array Int Int)) (v_ArrVal_473 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_472) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_473) c_~get_5~0.base) .cse0) 4294967296))) (<= 0 c_~id_3~0) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_113| Int) (v_ArrVal_472 (Array Int Int)) (v_ArrVal_471 (Array Int Int)) (v_ArrVal_473 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_113|) 0)) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_471) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_113| v_ArrVal_472) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_473) c_~get_5~0.base) .cse0) 4294967296)))))) is different from false [2023-11-24 23:57:09,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:09,819 INFO L93 Difference]: Finished difference Result 3980 states and 10733 transitions. [2023-11-24 23:57:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-24 23:57:09,820 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.8) internal successors, (84), 30 states have internal predecessors, (84), 0 states have call successors, (0), 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 32 [2023-11-24 23:57:09,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:09,838 INFO L225 Difference]: With dead ends: 3980 [2023-11-24 23:57:09,839 INFO L226 Difference]: Without dead ends: 3980 [2023-11-24 23:57:09,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=267, Invalid=1543, Unknown=8, NotChecked=252, Total=2070 [2023-11-24 23:57:09,842 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 326 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 33 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 761 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:09,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 715 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1103 Invalid, 6 Unknown, 761 Unchecked, 3.1s Time] [2023-11-24 23:57:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-11-24 23:57:09,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 1461. [2023-11-24 23:57:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1420 states have (on average 2.741549295774648) internal successors, (3893), 1460 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:09,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 3893 transitions. [2023-11-24 23:57:09,912 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 3893 transitions. Word has length 32 [2023-11-24 23:57:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:09,912 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 3893 transitions. [2023-11-24 23:57:09,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.8) internal successors, (84), 30 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 3893 transitions. [2023-11-24 23:57:09,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:57:09,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:09,913 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, 1, 1, 1, 1] [2023-11-24 23:57:09,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:10,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:10,120 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:57:10,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1921906050, now seen corresponding path program 1 times [2023-11-24 23:57:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964487685] [2023-11-24 23:57:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:10,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:57:10,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:10,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964487685] [2023-11-24 23:57:10,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964487685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:10,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:57:10,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:57:10,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447635125] [2023-11-24 23:57:10,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:10,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:57:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:10,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:57:10,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:57:10,226 INFO L87 Difference]: Start difference. First operand 1461 states and 3893 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:10,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:10,447 INFO L93 Difference]: Finished difference Result 1989 states and 5377 transitions. [2023-11-24 23:57:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:57:10,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-11-24 23:57:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:10,454 INFO L225 Difference]: With dead ends: 1989 [2023-11-24 23:57:10,455 INFO L226 Difference]: Without dead ends: 1989 [2023-11-24 23:57:10,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:57:10,456 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 60 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:10,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 110 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:57:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2023-11-24 23:57:10,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1659. [2023-11-24 23:57:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1624 states have (on average 2.7666256157635467) internal successors, (4493), 1658 states have internal predecessors, (4493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 4493 transitions. [2023-11-24 23:57:10,506 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 4493 transitions. Word has length 32 [2023-11-24 23:57:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:10,507 INFO L495 AbstractCegarLoop]: Abstraction has 1659 states and 4493 transitions. [2023-11-24 23:57:10,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 4493 transitions. [2023-11-24 23:57:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 23:57:10,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:10,510 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, 1, 1, 1, 1, 1] [2023-11-24 23:57:10,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-24 23:57:10,510 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:57:10,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:10,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1513251758, now seen corresponding path program 1 times [2023-11-24 23:57:10,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:10,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186140224] [2023-11-24 23:57:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:10,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:11,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:11,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186140224] [2023-11-24 23:57:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186140224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:11,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193453937] [2023-11-24 23:57:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:11,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:11,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:11,985 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:12,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2558d-98b3-48f4-841d-b8f8327ff9bb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:57:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:12,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-24 23:57:12,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:12,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 23:57:12,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 23:57:12,652 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-24 23:57:12,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-24 23:57:12,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-24 23:57:12,843 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 23:57:12,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 23:57:12,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-24 23:57:12,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:57:13,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-24 23:57:13,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:57:13,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-24 23:57:13,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-24 23:57:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:13,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:57:13,174 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_552 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_552) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset))))) is different from false [2023-11-24 23:57:15,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:57:15,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2023-11-24 23:57:15,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:57:15,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 343 treesize of output 327 [2023-11-24 23:57:15,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 140 [2023-11-24 23:57:15,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 116 [2023-11-24 23:57:15,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2023-11-24 23:57:16,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:57:16,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 61