./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --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 e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:43:56,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:43:56,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:43:56,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:43:56,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:43:56,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:43:56,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:43:56,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:43:56,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:43:56,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:43:56,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:43:56,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:43:56,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:43:56,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:43:56,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:43:56,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:43:56,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:43:56,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:43:56,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:43:56,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:43:56,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:43:56,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:43:56,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:43:56,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:43:56,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:43:56,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:43:56,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:43:56,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:43:56,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:43:56,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:43:56,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:43:56,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:43:56,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:43:56,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:43:56,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:43:56,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:43:56,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:43:56,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:43:56,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:43:56,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:43:56,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:43:56,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 01:43:56,806 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:43:56,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:43:56,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:43:56,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:43:56,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:43:56,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:43:56,809 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:43:56,809 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:43:56,809 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:43:56,809 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:43:56,810 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:43:56,811 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:43:56,811 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:43:56,811 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:43:56,811 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:43:56,811 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:43:56,812 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:43:56,812 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:43:56,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:43:56,813 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:43:56,813 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:43:56,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:43:56,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:43:56,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:43:56,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:43:56,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:43:56,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:43:56,815 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 01:43:56,816 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:43:56,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:43:56,816 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:43:56,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:43:56,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:43:56,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:43:56,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:43:56,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:43:56,817 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:43:56,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:43:56,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:43:56,818 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:43:56,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:43:56,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:43:56,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:43:56,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2022-11-03 01:43:57,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:43:57,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:43:57,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:43:57,101 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:43:57,102 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:43:57,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-03 01:43:57,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/data/3dd3f0cb5/aae1fd87fdde4b248cab51fdaac2e13a/FLAG7df9f6435 [2022-11-03 01:43:57,732 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:43:57,735 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-03 01:43:57,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/data/3dd3f0cb5/aae1fd87fdde4b248cab51fdaac2e13a/FLAG7df9f6435 [2022-11-03 01:43:58,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/data/3dd3f0cb5/aae1fd87fdde4b248cab51fdaac2e13a [2022-11-03 01:43:58,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:43:58,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:43:58,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:43:58,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:43:58,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:43:58,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@308a5a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58, skipping insertion in model container [2022-11-03 01:43:58,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:43:58,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:43:58,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-03 01:43:58,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:43:58,425 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:43:58,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-03 01:43:58,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:43:58,473 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:43:58,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58 WrapperNode [2022-11-03 01:43:58,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:43:58,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:43:58,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:43:58,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:43:58,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,530 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 418 [2022-11-03 01:43:58,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:43:58,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:43:58,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:43:58,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:43:58,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:43:58,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:43:58,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:43:58,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:43:58,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (1/1) ... [2022-11-03 01:43:58,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:43:58,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:43:58,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:43:58,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:43:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:43:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:43:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:43:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:43:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:43:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:43:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 01:43:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 01:43:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 01:43:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 01:43:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-03 01:43:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-03 01:43:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:43:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 01:43:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 01:43:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:43:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:43:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:43:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:43:58,656 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 01:43:58,817 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:43:58,819 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:43:59,649 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:44:00,204 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:44:00,205 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-03 01:44:00,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:44:00 BoogieIcfgContainer [2022-11-03 01:44:00,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:44:00,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:44:00,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:44:00,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:44:00,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:43:58" (1/3) ... [2022-11-03 01:44:00,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e81f0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:44:00, skipping insertion in model container [2022-11-03 01:44:00,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:58" (2/3) ... [2022-11-03 01:44:00,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e81f0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:44:00, skipping insertion in model container [2022-11-03 01:44:00,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:44:00" (3/3) ... [2022-11-03 01:44:00,226 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2022-11-03 01:44:00,238 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 01:44:00,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:44:00,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-03 01:44:00,250 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 01:44:00,494 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 01:44:00,576 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:44:00,594 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 372 places, 397 transitions, 818 flow [2022-11-03 01:44:00,599 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 372 places, 397 transitions, 818 flow [2022-11-03 01:44:00,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 397 transitions, 818 flow [2022-11-03 01:44:00,825 INFO L130 PetriNetUnfolder]: 35/394 cut-off events. [2022-11-03 01:44:00,826 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-03 01:44:00,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 394 events. 35/394 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 902 event pairs, 0 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 316. Up to 2 conditions per place. [2022-11-03 01:44:00,847 INFO L118 LiptonReduction]: Number of co-enabled transitions 19278 [2022-11-03 01:44:44,976 INFO L133 LiptonReduction]: Checked pairs total: 28452 [2022-11-03 01:44:44,976 INFO L135 LiptonReduction]: Total number of compositions: 482 [2022-11-03 01:44:44,984 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 75 transitions, 174 flow [2022-11-03 01:44:45,236 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5790 states, 5054 states have (on average 4.058963197467353) internal successors, (20514), 5789 states have internal predecessors, (20514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:45,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:44:45,267 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=LoopsAndPotentialCycles, 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;@6c90b3b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:44:45,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2022-11-03 01:44:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 5790 states, 5054 states have (on average 4.058963197467353) internal successors, (20514), 5789 states have internal predecessors, (20514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:45,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-03 01:44:45,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:45,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-03 01:44:45,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:44:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:45,301 INFO L85 PathProgramCache]: Analyzing trace with hash 65173, now seen corresponding path program 1 times [2022-11-03 01:44:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:45,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797880295] [2022-11-03 01:44:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:45,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:45,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797880295] [2022-11-03 01:44:45,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797880295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:45,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:45,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:44:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723832782] [2022-11-03 01:44:45,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:45,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:45,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:45,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:45,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:45,716 INFO L87 Difference]: Start difference. First operand has 5790 states, 5054 states have (on average 4.058963197467353) internal successors, (20514), 5789 states have internal predecessors, (20514), 0 states have call successors, (0), 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) [2022-11-03 01:44:46,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:46,221 INFO L93 Difference]: Finished difference Result 7325 states and 25977 transitions. [2022-11-03 01:44:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:46,225 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 [2022-11-03 01:44:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:46,308 INFO L225 Difference]: With dead ends: 7325 [2022-11-03 01:44:46,309 INFO L226 Difference]: Without dead ends: 7325 [2022-11-03 01:44:46,310 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 [2022-11-03 01:44:46,315 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 52 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:46,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 6 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:44:46,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7325 states. [2022-11-03 01:44:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7325 to 3669. [2022-11-03 01:44:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 3319 states have (on average 3.9168424224163907) internal successors, (13000), 3668 states have internal predecessors, (13000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 13000 transitions. [2022-11-03 01:44:46,646 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 13000 transitions. Word has length 2 [2022-11-03 01:44:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:46,647 INFO L495 AbstractCegarLoop]: Abstraction has 3669 states and 13000 transitions. [2022-11-03 01:44:46,647 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) [2022-11-03 01:44:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 13000 transitions. [2022-11-03 01:44:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 01:44:46,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:46,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 01:44:46,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:44:46,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:44:46,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:46,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2022265, now seen corresponding path program 1 times [2022-11-03 01:44:46,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:46,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719592695] [2022-11-03 01:44:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:46,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:46,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:46,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719592695] [2022-11-03 01:44:46,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719592695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:46,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:46,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:44:46,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106600450] [2022-11-03 01:44:46,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:46,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:46,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:46,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:46,824 INFO L87 Difference]: Start difference. First operand 3669 states and 13000 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:46,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:46,996 INFO L93 Difference]: Finished difference Result 3666 states and 12997 transitions. [2022-11-03 01:44:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:46,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-03 01:44:46,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:47,023 INFO L225 Difference]: With dead ends: 3666 [2022-11-03 01:44:47,023 INFO L226 Difference]: Without dead ends: 3666 [2022-11-03 01:44:47,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:47,025 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:47,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:44:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2022-11-03 01:44:47,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3666. [2022-11-03 01:44:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3319 states have (on average 3.9159385357035252) internal successors, (12997), 3665 states have internal predecessors, (12997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 12997 transitions. [2022-11-03 01:44:47,272 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 12997 transitions. Word has length 3 [2022-11-03 01:44:47,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:47,272 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 12997 transitions. [2022-11-03 01:44:47,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:47,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 12997 transitions. [2022-11-03 01:44:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 01:44:47,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:47,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 01:44:47,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:44:47,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:44:47,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:47,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2022266, now seen corresponding path program 1 times [2022-11-03 01:44:47,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:47,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237429852] [2022-11-03 01:44:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:47,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:47,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:47,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237429852] [2022-11-03 01:44:47,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237429852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:44:47,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12694963] [2022-11-03 01:44:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:47,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:47,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:47,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:44:47,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:44:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:47,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:44:47,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:44:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:47,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:44:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:47,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12694963] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:44:47,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [177857493] [2022-11-03 01:44:47,849 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:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) 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:336) 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:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2022-11-03 01:44:47,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:44:47,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-03 01:44:47,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827831355] [2022-11-03 01:44:47,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:44:47,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:44:47,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:47,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:44:47,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:44:47,870 INFO L87 Difference]: Start difference. First operand 3666 states and 12997 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) 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) [2022-11-03 01:44:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:48,868 INFO L93 Difference]: Finished difference Result 18299 states and 64929 transitions. [2022-11-03 01:44:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:44:48,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) 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 3 [2022-11-03 01:44:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:49,235 INFO L225 Difference]: With dead ends: 18299 [2022-11-03 01:44:49,235 INFO L226 Difference]: Without dead ends: 18299 [2022-11-03 01:44:49,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:44:49,239 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 312 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:49,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 15 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:44:49,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18299 states. [2022-11-03 01:44:49,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18299 to 3675. [2022-11-03 01:44:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 3328 states have (on average 3.9125600961538463) internal successors, (13021), 3674 states have internal predecessors, (13021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 13021 transitions. [2022-11-03 01:44:49,671 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 13021 transitions. Word has length 3 [2022-11-03 01:44:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:49,672 INFO L495 AbstractCegarLoop]: Abstraction has 3675 states and 13021 transitions. [2022-11-03 01:44:49,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) 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) [2022-11-03 01:44:49,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 13021 transitions. [2022-11-03 01:44:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 01:44:49,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:49,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 01:44:49,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:44:49,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:49,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:44:49,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1945580891, now seen corresponding path program 1 times [2022-11-03 01:44:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:49,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935374098] [2022-11-03 01:44:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:50,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:50,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935374098] [2022-11-03 01:44:50,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935374098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:50,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:50,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:44:50,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162845815] [2022-11-03 01:44:50,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:50,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:50,020 INFO L87 Difference]: Start difference. First operand 3675 states and 13021 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:50,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:50,318 INFO L93 Difference]: Finished difference Result 7335 states and 26009 transitions. [2022-11-03 01:44:50,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:50,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 01:44:50,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:50,415 INFO L225 Difference]: With dead ends: 7335 [2022-11-03 01:44:50,415 INFO L226 Difference]: Without dead ends: 7335 [2022-11-03 01:44:50,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:50,419 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:50,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 6 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:44:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7335 states. [2022-11-03 01:44:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7335 to 3681. [2022-11-03 01:44:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3334 states have (on average 3.9094181163767248) internal successors, (13034), 3680 states have internal predecessors, (13034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 13034 transitions. [2022-11-03 01:44:50,630 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 13034 transitions. Word has length 5 [2022-11-03 01:44:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:50,630 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 13034 transitions. [2022-11-03 01:44:50,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 13034 transitions. [2022-11-03 01:44:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:44:50,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:50,632 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-03 01:44:50,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:44:50,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:44:50,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash 117643158, now seen corresponding path program 2 times [2022-11-03 01:44:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:50,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362378898] [2022-11-03 01:44:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:50,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:50,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:50,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362378898] [2022-11-03 01:44:50,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362378898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:44:50,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087111039] [2022-11-03 01:44:50,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:44:50,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:50,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:50,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:44:50,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:44:51,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:44:51,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:44:51,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:44:51,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:44:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:44:51,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:44:51,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087111039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:51,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:44:51,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-03 01:44:51,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553269081] [2022-11-03 01:44:51,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:51,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:51,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:51,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:51,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:44:51,100 INFO L87 Difference]: Start difference. First operand 3681 states and 13034 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) [2022-11-03 01:44:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:51,280 INFO L93 Difference]: Finished difference Result 3680 states and 13033 transitions. [2022-11-03 01:44:51,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:51,281 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 6 [2022-11-03 01:44:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:51,302 INFO L225 Difference]: With dead ends: 3680 [2022-11-03 01:44:51,303 INFO L226 Difference]: Without dead ends: 3680 [2022-11-03 01:44:51,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:44:51,304 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:51,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:44:51,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2022-11-03 01:44:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3676. [2022-11-03 01:44:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3330 states have (on average 3.9114114114114114) internal successors, (13025), 3675 states have internal predecessors, (13025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 13025 transitions. [2022-11-03 01:44:51,491 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 13025 transitions. Word has length 6 [2022-11-03 01:44:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:51,492 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 13025 transitions. [2022-11-03 01:44:51,492 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) [2022-11-03 01:44:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 13025 transitions. [2022-11-03 01:44:51,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:44:51,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:51,507 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-03 01:44:51,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:44:51,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:51,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:44:51,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:51,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1392528673, now seen corresponding path program 1 times [2022-11-03 01:44:51,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:51,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352729077] [2022-11-03 01:44:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:51,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:51,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:51,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352729077] [2022-11-03 01:44:51,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352729077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:44:51,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179998682] [2022-11-03 01:44:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:51,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:51,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:51,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:44:51,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:44:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:52,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:44:52,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:44:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:52,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:44:52,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179998682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:52,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:44:52,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-03 01:44:52,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979509575] [2022-11-03 01:44:52,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:52,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:44:52,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:44:52,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:44:52,112 INFO L87 Difference]: Start difference. First operand 3676 states and 13025 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:52,396 INFO L93 Difference]: Finished difference Result 7329 states and 25995 transitions. [2022-11-03 01:44:52,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:44:52,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:44:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:52,440 INFO L225 Difference]: With dead ends: 7329 [2022-11-03 01:44:52,441 INFO L226 Difference]: Without dead ends: 7329 [2022-11-03 01:44:52,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:44:52,442 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 101 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:52,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 9 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:44:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7329 states. [2022-11-03 01:44:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7329 to 3675. [2022-11-03 01:44:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 3330 states have (on average 3.90990990990991) internal successors, (13020), 3674 states have internal predecessors, (13020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 13020 transitions. [2022-11-03 01:44:52,728 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 13020 transitions. Word has length 7 [2022-11-03 01:44:52,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:52,729 INFO L495 AbstractCegarLoop]: Abstraction has 3675 states and 13020 transitions. [2022-11-03 01:44:52,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 13020 transitions. [2022-11-03 01:44:52,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:44:52,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:52,730 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-03 01:44:52,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:44:52,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 01:44:52,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:44:52,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:52,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1392528674, now seen corresponding path program 1 times [2022-11-03 01:44:52,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:52,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908611869] [2022-11-03 01:44:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:52,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:53,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908611869] [2022-11-03 01:44:53,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908611869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:44:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186603856] [2022-11-03 01:44:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:53,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:53,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:53,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:44:53,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:44:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:53,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:44:53,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:44:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:53,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:44:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:53,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186603856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:44:53,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [741669930] [2022-11-03 01:44:53,312 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:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) 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:336) 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:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2022-11-03 01:44:53,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:44:53,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 01:44:53,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079491175] [2022-11-03 01:44:53,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:44:53,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:44:53,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:53,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:44:53,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:44:53,318 INFO L87 Difference]: Start difference. First operand 3675 states and 13020 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:54,026 INFO L93 Difference]: Finished difference Result 18309 states and 64959 transitions. [2022-11-03 01:44:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:44:54,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:44:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:54,165 INFO L225 Difference]: With dead ends: 18309 [2022-11-03 01:44:54,165 INFO L226 Difference]: Without dead ends: 18309 [2022-11-03 01:44:54,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:44:54,166 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 250 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:54,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 18 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:44:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18309 states. [2022-11-03 01:44:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18309 to 3693. [2022-11-03 01:44:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3348 states have (on average 3.900537634408602) internal successors, (13059), 3692 states have internal predecessors, (13059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 13059 transitions. [2022-11-03 01:44:54,415 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 13059 transitions. Word has length 7 [2022-11-03 01:44:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:54,415 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 13059 transitions. [2022-11-03 01:44:54,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 13059 transitions. [2022-11-03 01:44:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:44:54,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:54,416 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-03 01:44:54,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:44:54,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:54,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:44:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:54,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1369373252, now seen corresponding path program 1 times [2022-11-03 01:44:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:54,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503942650] [2022-11-03 01:44:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:54,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503942650] [2022-11-03 01:44:54,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503942650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:44:54,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582413437] [2022-11-03 01:44:54,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:54,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:54,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:54,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:44:54,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:44:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:55,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:44:55,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:44:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 01:44:55,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:44:55,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582413437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:55,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:44:55,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2022-11-03 01:44:55,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252047130] [2022-11-03 01:44:55,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:55,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:44:55,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:44:55,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:44:55,179 INFO L87 Difference]: Start difference. First operand 3693 states and 13059 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:55,510 INFO L93 Difference]: Finished difference Result 7352 states and 26044 transitions. [2022-11-03 01:44:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:44:55,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:44:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:55,560 INFO L225 Difference]: With dead ends: 7352 [2022-11-03 01:44:55,560 INFO L226 Difference]: Without dead ends: 7352 [2022-11-03 01:44:55,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:44:55,561 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 52 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:55,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 9 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:44:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2022-11-03 01:44:55,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 3696. [2022-11-03 01:44:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3351 states have (on average 3.898239331542823) internal successors, (13063), 3695 states have internal predecessors, (13063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 13063 transitions. [2022-11-03 01:44:55,745 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 13063 transitions. Word has length 7 [2022-11-03 01:44:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:55,745 INFO L495 AbstractCegarLoop]: Abstraction has 3696 states and 13063 transitions. [2022-11-03 01:44:55,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 13063 transitions. [2022-11-03 01:44:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:44:55,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:55,746 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-03 01:44:55,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:44:55,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:55,963 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:44:55,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:55,963 INFO L85 PathProgramCache]: Analyzing trace with hash -891581472, now seen corresponding path program 1 times [2022-11-03 01:44:55,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:55,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180168173] [2022-11-03 01:44:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:55,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 01:44:56,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:56,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180168173] [2022-11-03 01:44:56,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180168173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:44:56,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018935810] [2022-11-03 01:44:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:56,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:56,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:56,159 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:44:56,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:44:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:56,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:44:56,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:44:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 01:44:56,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:44:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 01:44:56,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018935810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:44:56,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1633492668] [2022-11-03 01:44:56,542 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:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) 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:336) 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:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2022-11-03 01:44:56,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:44:56,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-11-03 01:44:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651031225] [2022-11-03 01:44:56,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:44:56,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 01:44:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:56,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 01:44:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:44:56,545 INFO L87 Difference]: Start difference. First operand 3696 states and 13063 transitions. Second operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:57,703 INFO L93 Difference]: Finished difference Result 17261 states and 61096 transitions. [2022-11-03 01:44:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 01:44:57,703 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 01:44:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:57,790 INFO L225 Difference]: With dead ends: 17261 [2022-11-03 01:44:57,790 INFO L226 Difference]: Without dead ends: 17261 [2022-11-03 01:44:57,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2022-11-03 01:44:57,791 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 797 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:57,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 39 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:44:57,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17261 states. [2022-11-03 01:44:58,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17261 to 4820. [2022-11-03 01:44:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 4475 states have (on average 4.260111731843575) internal successors, (19064), 4819 states have internal predecessors, (19064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:58,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 19064 transitions. [2022-11-03 01:44:58,055 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 19064 transitions. Word has length 8 [2022-11-03 01:44:58,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:58,055 INFO L495 AbstractCegarLoop]: Abstraction has 4820 states and 19064 transitions. [2022-11-03 01:44:58,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:44:58,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 19064 transitions. [2022-11-03 01:44:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:44:58,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:58,059 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2022-11-03 01:44:58,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:44:58,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:58,267 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:44:58,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1788501847, now seen corresponding path program 1 times [2022-11-03 01:44:58,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:58,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400486957] [2022-11-03 01:44:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:58,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:58,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:58,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400486957] [2022-11-03 01:44:58,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400486957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:44:58,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547319935] [2022-11-03 01:44:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:58,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:58,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:58,390 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:44:58,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 01:44:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:58,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:44:58,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:44:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:58,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:44:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:44:58,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547319935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:44:58,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2091216808] [2022-11-03 01:44:58,755 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:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) 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:336) 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:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2022-11-03 01:44:58,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:44:58,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 01:44:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257369216] [2022-11-03 01:44:58,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:44:58,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:44:58,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:58,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:44:58,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:44:58,761 INFO L87 Difference]: Start difference. First operand 4820 states and 19064 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:00,393 INFO L93 Difference]: Finished difference Result 42553 states and 154961 transitions. [2022-11-03 01:45:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:45:00,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 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 [2022-11-03 01:45:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:00,594 INFO L225 Difference]: With dead ends: 42553 [2022-11-03 01:45:00,594 INFO L226 Difference]: Without dead ends: 42553 [2022-11-03 01:45:00,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:45:00,595 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 769 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:00,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 36 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 01:45:00,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42553 states. [2022-11-03 01:45:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42553 to 4856. [2022-11-03 01:45:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 4511 states have (on average 4.243405009975615) internal successors, (19142), 4855 states have internal predecessors, (19142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 19142 transitions. [2022-11-03 01:45:01,273 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 19142 transitions. Word has length 9 [2022-11-03 01:45:01,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:01,274 INFO L495 AbstractCegarLoop]: Abstraction has 4856 states and 19142 transitions. [2022-11-03 01:45:01,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:01,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 19142 transitions. [2022-11-03 01:45:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:45:01,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:01,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:01,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:01,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:01,495 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:01,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:01,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1671133326, now seen corresponding path program 1 times [2022-11-03 01:45:01,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:01,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265437152] [2022-11-03 01:45:01,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:01,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:01,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:01,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265437152] [2022-11-03 01:45:01,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265437152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:01,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:01,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:45:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129842834] [2022-11-03 01:45:01,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:01,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:01,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:01,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:01,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:01,601 INFO L87 Difference]: Start difference. First operand 4856 states and 19142 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:02,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:02,045 INFO L93 Difference]: Finished difference Result 8578 states and 34023 transitions. [2022-11-03 01:45:02,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:02,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:45:02,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:02,093 INFO L225 Difference]: With dead ends: 8578 [2022-11-03 01:45:02,093 INFO L226 Difference]: Without dead ends: 8578 [2022-11-03 01:45:02,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:02,095 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 39 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:02,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 7 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:02,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8578 states. [2022-11-03 01:45:02,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8578 to 6566. [2022-11-03 01:45:02,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6566 states, 6221 states have (on average 4.4891496543964) internal successors, (27927), 6565 states have internal predecessors, (27927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 27927 transitions. [2022-11-03 01:45:02,398 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 27927 transitions. Word has length 12 [2022-11-03 01:45:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:02,400 INFO L495 AbstractCegarLoop]: Abstraction has 6566 states and 27927 transitions. [2022-11-03 01:45:02,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:02,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 27927 transitions. [2022-11-03 01:45:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:45:02,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:02,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:02,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:45:02,402 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:02,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:02,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1671133480, now seen corresponding path program 1 times [2022-11-03 01:45:02,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:02,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236167703] [2022-11-03 01:45:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:02,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:02,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:02,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236167703] [2022-11-03 01:45:02,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236167703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:02,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:02,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492987995] [2022-11-03 01:45:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:02,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:02,498 INFO L87 Difference]: Start difference. First operand 6566 states and 27927 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:02,869 INFO L93 Difference]: Finished difference Result 7934 states and 32631 transitions. [2022-11-03 01:45:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:02,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:45:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:03,051 INFO L225 Difference]: With dead ends: 7934 [2022-11-03 01:45:03,052 INFO L226 Difference]: Without dead ends: 7926 [2022-11-03 01:45:03,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:03,053 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 56 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:03,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 15 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7926 states. [2022-11-03 01:45:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7926 to 7246. [2022-11-03 01:45:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7246 states, 6853 states have (on average 4.415438494090179) internal successors, (30259), 7245 states have internal predecessors, (30259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7246 states to 7246 states and 30259 transitions. [2022-11-03 01:45:03,279 INFO L78 Accepts]: Start accepts. Automaton has 7246 states and 30259 transitions. Word has length 12 [2022-11-03 01:45:03,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:03,279 INFO L495 AbstractCegarLoop]: Abstraction has 7246 states and 30259 transitions. [2022-11-03 01:45:03,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 7246 states and 30259 transitions. [2022-11-03 01:45:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:45:03,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:03,280 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2022-11-03 01:45:03,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:45:03,281 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:03,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1666972532, now seen corresponding path program 2 times [2022-11-03 01:45:03,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:03,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425051363] [2022-11-03 01:45:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:03,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:03,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425051363] [2022-11-03 01:45:03,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425051363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:45:03,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250083005] [2022-11-03 01:45:03,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:45:03,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:03,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:03,458 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:45:03,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 01:45:03,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:45:03,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:45:03,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:45:03,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:45:03,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:45:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:45:03,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250083005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:45:03,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2070021918] [2022-11-03 01:45:03,792 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:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) 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:336) 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:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2022-11-03 01:45:03,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:45:03,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 8 [2022-11-03 01:45:03,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48462253] [2022-11-03 01:45:03,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:45:03,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:03,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:03,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:03,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:03,795 INFO L87 Difference]: Start difference. First operand 7246 states and 30259 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:04,874 INFO L93 Difference]: Finished difference Result 50110 states and 210530 transitions. [2022-11-03 01:45:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:04,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:45:04,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:05,391 INFO L225 Difference]: With dead ends: 50110 [2022-11-03 01:45:05,391 INFO L226 Difference]: Without dead ends: 50110 [2022-11-03 01:45:05,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:45:05,394 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 849 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:05,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 21 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:45:05,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50110 states. [2022-11-03 01:45:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50110 to 7177. [2022-11-03 01:45:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7177 states, 6785 states have (on average 4.437582903463523) internal successors, (30109), 7176 states have internal predecessors, (30109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7177 states to 7177 states and 30109 transitions. [2022-11-03 01:45:06,557 INFO L78 Accepts]: Start accepts. Automaton has 7177 states and 30109 transitions. Word has length 13 [2022-11-03 01:45:06,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:06,557 INFO L495 AbstractCegarLoop]: Abstraction has 7177 states and 30109 transitions. [2022-11-03 01:45:06,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7177 states and 30109 transitions. [2022-11-03 01:45:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:45:06,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:06,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:06,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:06,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 01:45:06,784 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash -420296493, now seen corresponding path program 1 times [2022-11-03 01:45:06,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:06,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212385066] [2022-11-03 01:45:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:06,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:07,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:07,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212385066] [2022-11-03 01:45:07,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212385066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:07,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:07,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:45:07,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104930968] [2022-11-03 01:45:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:07,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:07,088 INFO L87 Difference]: Start difference. First operand 7177 states and 30109 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2022-11-03 01:45:08,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:08,169 INFO L93 Difference]: Finished difference Result 13679 states and 51560 transitions. [2022-11-03 01:45:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:45:08,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:45:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:08,227 INFO L225 Difference]: With dead ends: 13679 [2022-11-03 01:45:08,227 INFO L226 Difference]: Without dead ends: 13435 [2022-11-03 01:45:08,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:45:08,229 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 285 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:08,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 48 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:45:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13435 states. [2022-11-03 01:45:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13435 to 9005. [2022-11-03 01:45:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9005 states, 8613 states have (on average 4.255427841634738) internal successors, (36652), 9004 states have internal predecessors, (36652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9005 states to 9005 states and 36652 transitions. [2022-11-03 01:45:08,544 INFO L78 Accepts]: Start accepts. Automaton has 9005 states and 36652 transitions. Word has length 13 [2022-11-03 01:45:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:08,545 INFO L495 AbstractCegarLoop]: Abstraction has 9005 states and 36652 transitions. [2022-11-03 01:45:08,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2022-11-03 01:45:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 9005 states and 36652 transitions. [2022-11-03 01:45:08,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:45:08,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:08,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:08,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:45:08,547 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:08,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:08,549 INFO L85 PathProgramCache]: Analyzing trace with hash -356459511, now seen corresponding path program 1 times [2022-11-03 01:45:08,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:08,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534029074] [2022-11-03 01:45:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:08,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:08,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:08,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534029074] [2022-11-03 01:45:08,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534029074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:08,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:08,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:08,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595069551] [2022-11-03 01:45:08,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:08,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:08,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:08,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:08,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:08,832 INFO L87 Difference]: Start difference. First operand 9005 states and 36652 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:09,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:09,045 INFO L93 Difference]: Finished difference Result 9022 states and 36682 transitions. [2022-11-03 01:45:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:45:09,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:45:09,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:09,075 INFO L225 Difference]: With dead ends: 9022 [2022-11-03 01:45:09,076 INFO L226 Difference]: Without dead ends: 9022 [2022-11-03 01:45:09,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:09,076 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:09,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 9 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9022 states. [2022-11-03 01:45:09,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9022 to 9015. [2022-11-03 01:45:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 8623 states have (on average 4.252928215238316) internal successors, (36673), 9014 states have internal predecessors, (36673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:09,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 36673 transitions. [2022-11-03 01:45:09,487 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 36673 transitions. Word has length 14 [2022-11-03 01:45:09,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:09,488 INFO L495 AbstractCegarLoop]: Abstraction has 9015 states and 36673 transitions. [2022-11-03 01:45:09,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 36673 transitions. [2022-11-03 01:45:09,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:45:09,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:09,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:09,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 01:45:09,490 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:09,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:09,491 INFO L85 PathProgramCache]: Analyzing trace with hash -22922781, now seen corresponding path program 1 times [2022-11-03 01:45:09,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:09,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118599820] [2022-11-03 01:45:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:09,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:09,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:09,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118599820] [2022-11-03 01:45:09,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118599820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:09,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:09,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:09,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285831823] [2022-11-03 01:45:09,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:09,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:45:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:45:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:09,968 INFO L87 Difference]: Start difference. First operand 9015 states and 36673 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:11,062 INFO L93 Difference]: Finished difference Result 9619 states and 37854 transitions. [2022-11-03 01:45:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:45:11,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:45:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:11,103 INFO L225 Difference]: With dead ends: 9619 [2022-11-03 01:45:11,103 INFO L226 Difference]: Without dead ends: 9603 [2022-11-03 01:45:11,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-11-03 01:45:11,105 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 355 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:11,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 65 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:45:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9603 states. [2022-11-03 01:45:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9603 to 8381. [2022-11-03 01:45:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 7989 states have (on average 4.280385530103893) internal successors, (34196), 8380 states have internal predecessors, (34196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 34196 transitions. [2022-11-03 01:45:11,514 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 34196 transitions. Word has length 14 [2022-11-03 01:45:11,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:11,515 INFO L495 AbstractCegarLoop]: Abstraction has 8381 states and 34196 transitions. [2022-11-03 01:45:11,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:11,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 34196 transitions. [2022-11-03 01:45:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:45:11,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:11,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:11,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 01:45:11,516 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:11,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1177086811, now seen corresponding path program 1 times [2022-11-03 01:45:11,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:11,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820865203] [2022-11-03 01:45:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:11,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:11,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820865203] [2022-11-03 01:45:11,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820865203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:11,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:11,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458125324] [2022-11-03 01:45:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:11,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:11,585 INFO L87 Difference]: Start difference. First operand 8381 states and 34196 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:11,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:11,919 INFO L93 Difference]: Finished difference Result 9653 states and 38698 transitions. [2022-11-03 01:45:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:11,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:45:11,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:11,965 INFO L225 Difference]: With dead ends: 9653 [2022-11-03 01:45:11,965 INFO L226 Difference]: Without dead ends: 9551 [2022-11-03 01:45:11,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:11,966 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 56 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:11,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 15 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9551 states. [2022-11-03 01:45:12,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9551 to 9551. [2022-11-03 01:45:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9551 states, 9105 states have (on average 4.20823723228995) internal successors, (38316), 9550 states have internal predecessors, (38316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9551 states to 9551 states and 38316 transitions. [2022-11-03 01:45:12,221 INFO L78 Accepts]: Start accepts. Automaton has 9551 states and 38316 transitions. Word has length 14 [2022-11-03 01:45:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:12,222 INFO L495 AbstractCegarLoop]: Abstraction has 9551 states and 38316 transitions. [2022-11-03 01:45:12,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9551 states and 38316 transitions. [2022-11-03 01:45:12,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:45:12,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:12,226 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2022-11-03 01:45:12,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 01:45:12,227 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1464990185, now seen corresponding path program 2 times [2022-11-03 01:45:12,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:12,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601326255] [2022-11-03 01:45:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:12,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:12,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:12,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601326255] [2022-11-03 01:45:12,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601326255] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:45:12,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256976933] [2022-11-03 01:45:12,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:45:12,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:12,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:12,623 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:45:12,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 01:45:12,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:45:12,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:45:12,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:45:12,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 01:45:12,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:12,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256976933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:12,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:45:12,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2022-11-03 01:45:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096996702] [2022-11-03 01:45:12,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:12,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:12,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:12,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:12,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:45:12,953 INFO L87 Difference]: Start difference. First operand 9551 states and 38316 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-11-03 01:45:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:13,198 INFO L93 Difference]: Finished difference Result 9767 states and 38675 transitions. [2022-11-03 01:45:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:13,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 15 [2022-11-03 01:45:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:13,243 INFO L225 Difference]: With dead ends: 9767 [2022-11-03 01:45:13,243 INFO L226 Difference]: Without dead ends: 9753 [2022-11-03 01:45:13,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:45:13,244 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 110 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:13,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 9 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9753 states. [2022-11-03 01:45:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9753 to 9527. [2022-11-03 01:45:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9527 states, 9082 states have (on average 4.213499229244659) internal successors, (38267), 9526 states have internal predecessors, (38267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 38267 transitions. [2022-11-03 01:45:13,505 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 38267 transitions. Word has length 15 [2022-11-03 01:45:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:13,505 INFO L495 AbstractCegarLoop]: Abstraction has 9527 states and 38267 transitions. [2022-11-03 01:45:13,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-11-03 01:45:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 38267 transitions. [2022-11-03 01:45:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:45:13,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:13,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:13,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:13,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 01:45:13,723 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:13,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2097830959, now seen corresponding path program 1 times [2022-11-03 01:45:13,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:13,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726309608] [2022-11-03 01:45:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:13,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:13,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:13,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726309608] [2022-11-03 01:45:13,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726309608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:13,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:13,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:45:13,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823072846] [2022-11-03 01:45:13,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:13,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:13,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:13,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:13,973 INFO L87 Difference]: Start difference. First operand 9527 states and 38267 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:14,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:14,729 INFO L93 Difference]: Finished difference Result 10224 states and 39913 transitions. [2022-11-03 01:45:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:45:14,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 01:45:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:14,762 INFO L225 Difference]: With dead ends: 10224 [2022-11-03 01:45:14,762 INFO L226 Difference]: Without dead ends: 9882 [2022-11-03 01:45:14,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:45:14,763 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 210 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:14,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 44 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:45:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9882 states. [2022-11-03 01:45:14,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9882 to 9529. [2022-11-03 01:45:14,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9529 states, 9084 states have (on average 4.20266402465874) internal successors, (38177), 9528 states have internal predecessors, (38177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9529 states to 9529 states and 38177 transitions. [2022-11-03 01:45:15,073 INFO L78 Accepts]: Start accepts. Automaton has 9529 states and 38177 transitions. Word has length 15 [2022-11-03 01:45:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:15,074 INFO L495 AbstractCegarLoop]: Abstraction has 9529 states and 38177 transitions. [2022-11-03 01:45:15,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9529 states and 38177 transitions. [2022-11-03 01:45:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:45:15,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:15,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:15,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 01:45:15,075 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:15,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:15,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1781461863, now seen corresponding path program 1 times [2022-11-03 01:45:15,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:15,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666945992] [2022-11-03 01:45:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:15,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:15,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:15,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666945992] [2022-11-03 01:45:15,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666945992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:15,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:15,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:15,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123146381] [2022-11-03 01:45:15,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:15,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:15,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:15,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:15,347 INFO L87 Difference]: Start difference. First operand 9529 states and 38177 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:15,748 INFO L93 Difference]: Finished difference Result 14428 states and 54260 transitions. [2022-11-03 01:45:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:45:15,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 01:45:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:15,791 INFO L225 Difference]: With dead ends: 14428 [2022-11-03 01:45:15,791 INFO L226 Difference]: Without dead ends: 13928 [2022-11-03 01:45:15,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:15,792 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 101 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:15,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 18 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13928 states. [2022-11-03 01:45:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13928 to 10624. [2022-11-03 01:45:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10624 states, 10179 states have (on average 4.189900776107673) internal successors, (42649), 10623 states have internal predecessors, (42649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10624 states to 10624 states and 42649 transitions. [2022-11-03 01:45:16,186 INFO L78 Accepts]: Start accepts. Automaton has 10624 states and 42649 transitions. Word has length 15 [2022-11-03 01:45:16,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:16,186 INFO L495 AbstractCegarLoop]: Abstraction has 10624 states and 42649 transitions. [2022-11-03 01:45:16,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand 10624 states and 42649 transitions. [2022-11-03 01:45:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:45:16,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:16,188 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1] [2022-11-03 01:45:16,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 01:45:16,189 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash -696379516, now seen corresponding path program 2 times [2022-11-03 01:45:16,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:16,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137865551] [2022-11-03 01:45:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:16,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-03 01:45:16,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:16,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137865551] [2022-11-03 01:45:16,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137865551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:45:16,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036123445] [2022-11-03 01:45:16,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:45:16,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:16,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:16,467 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:45:16,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 01:45:16,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:45:16,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:45:16,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:45:16,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-03 01:45:16,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:16,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036123445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:16,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:45:16,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-11-03 01:45:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720242740] [2022-11-03 01:45:16,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:16,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:16,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:16,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:16,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:16,805 INFO L87 Difference]: Start difference. First operand 10624 states and 42649 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:17,076 INFO L93 Difference]: Finished difference Result 10657 states and 41705 transitions. [2022-11-03 01:45:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:17,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 01:45:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:17,136 INFO L225 Difference]: With dead ends: 10657 [2022-11-03 01:45:17,137 INFO L226 Difference]: Without dead ends: 10657 [2022-11-03 01:45:17,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:17,138 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 127 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:17,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 6 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:17,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10657 states. [2022-11-03 01:45:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10657 to 8073. [2022-11-03 01:45:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8073 states, 7693 states have (on average 3.8555829975302225) internal successors, (29661), 8072 states have internal predecessors, (29661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8073 states to 8073 states and 29661 transitions. [2022-11-03 01:45:17,377 INFO L78 Accepts]: Start accepts. Automaton has 8073 states and 29661 transitions. Word has length 15 [2022-11-03 01:45:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:17,378 INFO L495 AbstractCegarLoop]: Abstraction has 8073 states and 29661 transitions. [2022-11-03 01:45:17,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 8073 states and 29661 transitions. [2022-11-03 01:45:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:45:17,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:17,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:17,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:17,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:17,581 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:17,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1544875265, now seen corresponding path program 1 times [2022-11-03 01:45:17,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:17,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577600709] [2022-11-03 01:45:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:17,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:18,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:18,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577600709] [2022-11-03 01:45:18,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577600709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:18,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:18,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:45:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464470170] [2022-11-03 01:45:18,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:18,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:45:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:45:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:18,216 INFO L87 Difference]: Start difference. First operand 8073 states and 29661 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 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) [2022-11-03 01:45:19,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:19,105 INFO L93 Difference]: Finished difference Result 8349 states and 29710 transitions. [2022-11-03 01:45:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:45:19,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 01:45:19,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:19,128 INFO L225 Difference]: With dead ends: 8349 [2022-11-03 01:45:19,128 INFO L226 Difference]: Without dead ends: 8214 [2022-11-03 01:45:19,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:45:19,129 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 255 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:19,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 46 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:45:19,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8214 states. [2022-11-03 01:45:19,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8214 to 7546. [2022-11-03 01:45:19,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7546 states, 7166 states have (on average 3.864778118894781) internal successors, (27695), 7545 states have internal predecessors, (27695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7546 states to 7546 states and 27695 transitions. [2022-11-03 01:45:19,266 INFO L78 Accepts]: Start accepts. Automaton has 7546 states and 27695 transitions. Word has length 16 [2022-11-03 01:45:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:19,266 INFO L495 AbstractCegarLoop]: Abstraction has 7546 states and 27695 transitions. [2022-11-03 01:45:19,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 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) [2022-11-03 01:45:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7546 states and 27695 transitions. [2022-11-03 01:45:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:45:19,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:19,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:19,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 01:45:19,268 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash 674945222, now seen corresponding path program 1 times [2022-11-03 01:45:19,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:19,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683999448] [2022-11-03 01:45:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:19,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:19,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:19,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683999448] [2022-11-03 01:45:19,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683999448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:19,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:19,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:19,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405378451] [2022-11-03 01:45:19,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:19,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:45:19,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:19,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:45:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:19,686 INFO L87 Difference]: Start difference. First operand 7546 states and 27695 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 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) [2022-11-03 01:45:20,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:20,339 INFO L93 Difference]: Finished difference Result 7500 states and 27263 transitions. [2022-11-03 01:45:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:45:20,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 01:45:20,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:20,359 INFO L225 Difference]: With dead ends: 7500 [2022-11-03 01:45:20,359 INFO L226 Difference]: Without dead ends: 7325 [2022-11-03 01:45:20,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:45:20,360 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 199 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:20,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 46 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:45:20,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7325 states. [2022-11-03 01:45:20,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7325 to 7323. [2022-11-03 01:45:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7323 states, 6943 states have (on average 3.860146910557396) internal successors, (26801), 7322 states have internal predecessors, (26801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7323 states to 7323 states and 26801 transitions. [2022-11-03 01:45:20,488 INFO L78 Accepts]: Start accepts. Automaton has 7323 states and 26801 transitions. Word has length 16 [2022-11-03 01:45:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:20,488 INFO L495 AbstractCegarLoop]: Abstraction has 7323 states and 26801 transitions. [2022-11-03 01:45:20,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 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) [2022-11-03 01:45:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 7323 states and 26801 transitions. [2022-11-03 01:45:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:45:20,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:20,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:20,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 01:45:20,490 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:20,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash 609162919, now seen corresponding path program 1 times [2022-11-03 01:45:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:20,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289142055] [2022-11-03 01:45:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:20,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:20,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:20,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289142055] [2022-11-03 01:45:20,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289142055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:20,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:20,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:45:20,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222645120] [2022-11-03 01:45:20,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:20,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:20,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:20,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:20,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:20,807 INFO L87 Difference]: Start difference. First operand 7323 states and 26801 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 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) [2022-11-03 01:45:21,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:21,293 INFO L93 Difference]: Finished difference Result 7119 states and 25272 transitions. [2022-11-03 01:45:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:21,294 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 01:45:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:21,318 INFO L225 Difference]: With dead ends: 7119 [2022-11-03 01:45:21,318 INFO L226 Difference]: Without dead ends: 7119 [2022-11-03 01:45:21,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:45:21,320 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 323 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:21,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 13 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:21,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7119 states. [2022-11-03 01:45:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7119 to 6803. [2022-11-03 01:45:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6803 states, 6423 states have (on average 3.8457107270745756) internal successors, (24701), 6802 states have internal predecessors, (24701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6803 states to 6803 states and 24701 transitions. [2022-11-03 01:45:21,483 INFO L78 Accepts]: Start accepts. Automaton has 6803 states and 24701 transitions. Word has length 16 [2022-11-03 01:45:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:21,484 INFO L495 AbstractCegarLoop]: Abstraction has 6803 states and 24701 transitions. [2022-11-03 01:45:21,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 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) [2022-11-03 01:45:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 6803 states and 24701 transitions. [2022-11-03 01:45:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:45:21,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:21,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:21,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 01:45:21,486 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-03 01:45:21,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:21,486 INFO L85 PathProgramCache]: Analyzing trace with hash -579768885, now seen corresponding path program 1 times [2022-11-03 01:45:21,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:21,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910286105] [2022-11-03 01:45:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:21,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:23,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:23,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910286105] [2022-11-03 01:45:23,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910286105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:45:23,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916018017] [2022-11-03 01:45:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:23,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:23,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:23,017 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:45:23,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e3e6892-8e12-429b-86c8-b2b55205450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 01:45:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:23,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 01:45:23,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:23,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:45:23,471 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 01:45:23,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:45:23,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:45:23,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:23,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 24 [2022-11-03 01:45:23,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 [2022-11-03 01:45:23,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:23,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 47 treesize of output 45 [2022-11-03 01:45:23,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:23,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-03 01:45:23,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:23,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 [2022-11-03 01:45:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:24,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:45:25,089 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:25,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 105 treesize of output 106 [2022-11-03 01:45:25,103 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:25,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 93 treesize of output 94 [2022-11-03 01:45:25,125 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:25,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 176 treesize of output 172 [2022-11-03 01:45:25,148 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:25,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 290 treesize of output 264 [2022-11-03 01:45:25,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 234 treesize of output 194 [2022-11-03 01:45:25,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 76 [2022-11-03 01:46:01,457 WARN L234 SmtUtils]: Spent 34.22s on a formula simplification. DAG size of input: 149 DAG size of output: 101 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:01,845 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:46:01,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1730 treesize of output 1035