./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba --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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- 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-b5237d8 [2022-11-22 00:29:53,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:29:53,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:29:53,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:29:53,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:29:53,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:29:53,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:29:53,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:29:53,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:29:53,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:29:53,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:29:53,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:29:53,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:29:53,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:29:53,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:29:53,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:29:53,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:29:53,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:29:53,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:29:53,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:29:53,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:29:53,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:29:53,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:29:53,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:29:53,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:29:53,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:29:53,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:29:53,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:29:53,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:29:53,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:29:53,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:29:54,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:29:54,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:29:54,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:29:54,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:29:54,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:29:54,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:29:54,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:29:54,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:29:54,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:29:54,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:29:54,011 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 00:29:54,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:29:54,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:29:54,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:29:54,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:29:54,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:29:54,059 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:29:54,060 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:29:54,060 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:29:54,060 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:29:54,060 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:29:54,061 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:29:54,061 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:29:54,061 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:29:54,061 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:29:54,062 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:29:54,062 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:29:54,062 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:29:54,062 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:29:54,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:29:54,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:29:54,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:29:54,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:29:54,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:29:54,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:29:54,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:29:54,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:29:54,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:29:54,069 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:29:54,070 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:29:54,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:29:54,070 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:29:54,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:29:54,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:29:54,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:29:54,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:29:54,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:29:54,073 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:29:54,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:29:54,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:29:54,074 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:29:54,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:29:54,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:29:54,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:29:54,075 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_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-11-22 00:29:54,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:29:54,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:29:54,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:29:54,423 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:29:54,423 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:29:54,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-22 00:29:57,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:29:57,837 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:29:57,838 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-22 00:29:57,858 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/data/7a4d67188/83573d68c9da4f90acec75adece5b9a9/FLAG54d878c6a [2022-11-22 00:29:57,880 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/data/7a4d67188/83573d68c9da4f90acec75adece5b9a9 [2022-11-22 00:29:57,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:29:57,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:29:57,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:29:57,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:29:57,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:29:57,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:29:57" (1/1) ... [2022-11-22 00:29:57,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12828319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:57, skipping insertion in model container [2022-11-22 00:29:57,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:29:57" (1/1) ... [2022-11-22 00:29:57,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:29:57,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:29:58,420 WARN L237 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_b9539813-8179-436b-9bf6-deee4ac9c0ab/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-22 00:29:58,431 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-22 00:29:58,431 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-22 00:29:58,432 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-22 00:29:58,432 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-22 00:29:58,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:29:58,491 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:29:58,528 WARN L237 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_b9539813-8179-436b-9bf6-deee4ac9c0ab/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-22 00:29:58,532 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-22 00:29:58,532 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-22 00:29:58,533 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-22 00:29:58,533 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-22 00:29:58,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:29:58,617 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:29:58,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58 WrapperNode [2022-11-22 00:29:58,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:29:58,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:29:58,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:29:58,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:29:58,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,681 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 237 [2022-11-22 00:29:58,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:29:58,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:29:58,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:29:58,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:29:58,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:29:58,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:29:58,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:29:58,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:29:58,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (1/1) ... [2022-11-22 00:29:58,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:29:58,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:29:58,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:29:58,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:29:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:29:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:29:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:29:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:29:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:29:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 00:29:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:29:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:29:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:29:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-22 00:29:58,839 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-22 00:29:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:29:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:29:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:29:58,842 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 00:29:59,041 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:29:59,043 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:29:59,569 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:29:59,588 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:29:59,588 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-22 00:29:59,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:29:59 BoogieIcfgContainer [2022-11-22 00:29:59,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:29:59,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:29:59,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:29:59,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:29:59,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:29:57" (1/3) ... [2022-11-22 00:29:59,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ddc6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:29:59, skipping insertion in model container [2022-11-22 00:29:59,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:58" (2/3) ... [2022-11-22 00:29:59,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ddc6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:29:59, skipping insertion in model container [2022-11-22 00:29:59,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:29:59" (3/3) ... [2022-11-22 00:29:59,616 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-11-22 00:29:59,625 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 00:29:59,636 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:29:59,636 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-22 00:29:59,636 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 00:29:59,722 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-22 00:29:59,759 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:29:59,774 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 284 transitions, 576 flow [2022-11-22 00:29:59,777 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 284 transitions, 576 flow [2022-11-22 00:29:59,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 284 transitions, 576 flow [2022-11-22 00:29:59,897 INFO L130 PetriNetUnfolder]: 28/301 cut-off events. [2022-11-22 00:29:59,898 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-22 00:29:59,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 301 events. 28/301 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 565 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 164. Up to 4 conditions per place. [2022-11-22 00:29:59,914 INFO L119 LiptonReduction]: Number of co-enabled transitions 5400 [2022-11-22 00:30:45,564 WARN L233 SmtUtils]: Spent 13.42s on a formula simplification. DAG size of input: 184 DAG size of output: 183 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 00:30:52,312 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 00:31:06,579 WARN L233 SmtUtils]: Spent 14.26s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 00:31:14,135 WARN L233 SmtUtils]: Spent 7.55s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 00:31:28,954 WARN L233 SmtUtils]: Spent 14.74s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 00:31:37,642 WARN L233 SmtUtils]: Spent 8.69s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 00:31:51,868 WARN L233 SmtUtils]: Spent 14.22s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 00:31:59,647 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 00:32:00,289 INFO L134 LiptonReduction]: Checked pairs total: 5765 [2022-11-22 00:32:00,289 INFO L136 LiptonReduction]: Total number of compositions: 302 [2022-11-22 00:32:00,296 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 54 transitions, 116 flow [2022-11-22 00:32:00,326 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 187 states, 144 states have (on average 3.0625) internal successors, (441), 186 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:00,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:32:00,349 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;@2196d628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:32:00,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-22 00:32:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 144 states have (on average 3.0625) internal successors, (441), 186 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 00:32:00,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:00,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 00:32:00,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:00,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:00,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1100258, now seen corresponding path program 1 times [2022-11-22 00:32:00,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:00,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670825435] [2022-11-22 00:32:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:00,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:00,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271561482] [2022-11-22 00:32:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:00,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:00,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:00,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:00,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:32:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:00,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:32:00,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:00,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:00,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:00,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670825435] [2022-11-22 00:32:00,674 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:00,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271561482] [2022-11-22 00:32:00,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271561482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:00,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:00,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:32:00,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061620023] [2022-11-22 00:32:00,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:00,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:00,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:00,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:00,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:00,720 INFO L87 Difference]: Start difference. First operand has 187 states, 144 states have (on average 3.0625) internal successors, (441), 186 states have internal predecessors, (441), 0 states have call successors, (0), 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 1.5) 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) [2022-11-22 00:32:01,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:01,293 INFO L93 Difference]: Finished difference Result 188 states and 363 transitions. [2022-11-22 00:32:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:01,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 00:32:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:01,308 INFO L225 Difference]: With dead ends: 188 [2022-11-22 00:32:01,309 INFO L226 Difference]: Without dead ends: 185 [2022-11-22 00:32:01,310 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 [2022-11-22 00:32:01,313 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:01,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:32:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-22 00:32:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-11-22 00:32:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 145 states have (on average 2.4689655172413794) internal successors, (358), 184 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 358 transitions. [2022-11-22 00:32:01,369 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 358 transitions. Word has length 3 [2022-11-22 00:32:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:01,370 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 358 transitions. [2022-11-22 00:32:01,370 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) [2022-11-22 00:32:01,371 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 358 transitions. [2022-11-22 00:32:01,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 00:32:01,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:01,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 00:32:01,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 00:32:01,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:01,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1100439, now seen corresponding path program 1 times [2022-11-22 00:32:01,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:01,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206772730] [2022-11-22 00:32:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:01,619 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:01,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156398969] [2022-11-22 00:32:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:01,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:01,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:01,622 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:01,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:32:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:01,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:32:01,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:01,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:01,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:01,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206772730] [2022-11-22 00:32:01,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:01,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156398969] [2022-11-22 00:32:01,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156398969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:01,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:01,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:32:01,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496981123] [2022-11-22 00:32:01,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:01,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:01,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:01,811 INFO L87 Difference]: Start difference. First operand 185 states and 358 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) [2022-11-22 00:32:02,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:02,141 INFO L93 Difference]: Finished difference Result 184 states and 356 transitions. [2022-11-22 00:32:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:02,142 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 [2022-11-22 00:32:02,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:02,144 INFO L225 Difference]: With dead ends: 184 [2022-11-22 00:32:02,144 INFO L226 Difference]: Without dead ends: 184 [2022-11-22 00:32:02,144 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 [2022-11-22 00:32:02,146 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:02,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:32:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-22 00:32:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-22 00:32:02,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 145 states have (on average 2.4551724137931035) internal successors, (356), 183 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 356 transitions. [2022-11-22 00:32:02,161 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 356 transitions. Word has length 3 [2022-11-22 00:32:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:02,162 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 356 transitions. [2022-11-22 00:32:02,162 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) [2022-11-22 00:32:02,162 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 356 transitions. [2022-11-22 00:32:02,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:32:02,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:02,163 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-11-22 00:32:02,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:02,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-22 00:32:02,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:02,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1057485274, now seen corresponding path program 1 times [2022-11-22 00:32:02,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:02,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986942861] [2022-11-22 00:32:02,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:02,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:02,431 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:02,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755434434] [2022-11-22 00:32:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:02,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:02,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:02,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:02,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:32:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:02,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:32:02,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:02,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:02,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:02,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986942861] [2022-11-22 00:32:02,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:02,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755434434] [2022-11-22 00:32:02,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755434434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:02,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:02,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:02,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8995366] [2022-11-22 00:32:02,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:02,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:02,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:02,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:02,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:02,580 INFO L87 Difference]: Start difference. First operand 184 states and 356 transitions. Second operand has 3 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) [2022-11-22 00:32:02,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:02,827 INFO L93 Difference]: Finished difference Result 188 states and 360 transitions. [2022-11-22 00:32:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:02,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 5 [2022-11-22 00:32:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:02,832 INFO L225 Difference]: With dead ends: 188 [2022-11-22 00:32:02,833 INFO L226 Difference]: Without dead ends: 188 [2022-11-22 00:32:02,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:02,836 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:02,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:32:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-22 00:32:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2022-11-22 00:32:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 147 states have (on average 2.4489795918367347) internal successors, (360), 185 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 360 transitions. [2022-11-22 00:32:02,868 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 360 transitions. Word has length 5 [2022-11-22 00:32:02,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:02,869 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 360 transitions. [2022-11-22 00:32:02,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-22 00:32:02,870 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 360 transitions. [2022-11-22 00:32:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:32:02,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:02,870 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 00:32:02,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:03,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:03,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:03,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:03,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1575612660, now seen corresponding path program 1 times [2022-11-22 00:32:03,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:03,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755982867] [2022-11-22 00:32:03,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:03,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:03,115 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:03,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435181420] [2022-11-22 00:32:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:03,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:03,123 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:03,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:32:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:03,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:32:03,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:03,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:32:03,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:03,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755982867] [2022-11-22 00:32:03,362 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:03,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435181420] [2022-11-22 00:32:03,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435181420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:03,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2051640717] [2022-11-22 00:32:03,371 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) [2022-11-22 00:32:03,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:03,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-22 00:32:03,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352459971] [2022-11-22 00:32:03,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:32:03,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:32:03,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:03,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:32:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:32:03,376 INFO L87 Difference]: Start difference. First operand 186 states and 360 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:04,246 INFO L93 Difference]: Finished difference Result 198 states and 372 transitions. [2022-11-22 00:32:04,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:04,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 00:32:04,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:04,248 INFO L225 Difference]: With dead ends: 198 [2022-11-22 00:32:04,248 INFO L226 Difference]: Without dead ends: 198 [2022-11-22 00:32:04,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:32:04,249 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:04,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 16 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 00:32:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-22 00:32:04,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2022-11-22 00:32:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 153 states have (on average 2.4313725490196076) internal successors, (372), 191 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 372 transitions. [2022-11-22 00:32:04,260 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 372 transitions. Word has length 6 [2022-11-22 00:32:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:04,260 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 372 transitions. [2022-11-22 00:32:04,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:04,261 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 372 transitions. [2022-11-22 00:32:04,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 00:32:04,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:04,261 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-11-22 00:32:04,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:04,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:04,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:04,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:04,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1606504870, now seen corresponding path program 2 times [2022-11-22 00:32:04,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:04,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830458602] [2022-11-22 00:32:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:04,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:04,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:04,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346682609] [2022-11-22 00:32:04,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:32:04,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:04,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:04,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:04,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:32:04,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 00:32:04,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:32:04,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:32:04,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:32:04,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:04,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:04,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830458602] [2022-11-22 00:32:04,844 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:04,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346682609] [2022-11-22 00:32:04,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346682609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:04,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:04,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:32:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857535833] [2022-11-22 00:32:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:04,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:04,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:04,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:04,847 INFO L87 Difference]: Start difference. First operand 192 states and 372 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:05,461 INFO L93 Difference]: Finished difference Result 192 states and 370 transitions. [2022-11-22 00:32:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:05,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 00:32:05,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:05,464 INFO L225 Difference]: With dead ends: 192 [2022-11-22 00:32:05,464 INFO L226 Difference]: Without dead ends: 192 [2022-11-22 00:32:05,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:05,465 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:05,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:32:05,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-22 00:32:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-22 00:32:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 153 states have (on average 2.418300653594771) internal successors, (370), 191 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 370 transitions. [2022-11-22 00:32:05,476 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 370 transitions. Word has length 9 [2022-11-22 00:32:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:05,476 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 370 transitions. [2022-11-22 00:32:05,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 370 transitions. [2022-11-22 00:32:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 00:32:05,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:05,478 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-11-22 00:32:05,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:05,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:05,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:05,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:05,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1737963036, now seen corresponding path program 3 times [2022-11-22 00:32:05,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:05,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377978587] [2022-11-22 00:32:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:05,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:05,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:05,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495255640] [2022-11-22 00:32:05,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:32:05,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:05,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:05,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:05,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:32:06,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:32:06,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:32:06,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 00:32:06,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:06,307 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:32:06,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:32:06,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:06,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377978587] [2022-11-22 00:32:06,381 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:06,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495255640] [2022-11-22 00:32:06,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495255640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:06,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1903176499] [2022-11-22 00:32:06,382 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) [2022-11-22 00:32:06,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:06,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-22 00:32:06,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116447294] [2022-11-22 00:32:06,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:32:06,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:32:06,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:06,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:32:06,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:32:06,386 INFO L87 Difference]: Start difference. First operand 192 states and 370 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 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) [2022-11-22 00:32:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:07,986 INFO L93 Difference]: Finished difference Result 220 states and 394 transitions. [2022-11-22 00:32:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 00:32:07,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 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 10 [2022-11-22 00:32:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:07,989 INFO L225 Difference]: With dead ends: 220 [2022-11-22 00:32:07,989 INFO L226 Difference]: Without dead ends: 220 [2022-11-22 00:32:07,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:32:07,990 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 40 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:07,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 12 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:32:07,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-22 00:32:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 204. [2022-11-22 00:32:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 165 states have (on average 2.3878787878787877) internal successors, (394), 203 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 394 transitions. [2022-11-22 00:32:07,998 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 394 transitions. Word has length 10 [2022-11-22 00:32:07,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:07,999 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 394 transitions. [2022-11-22 00:32:07,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 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) [2022-11-22 00:32:07,999 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 394 transitions. [2022-11-22 00:32:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 00:32:08,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:08,000 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-11-22 00:32:08,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:08,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 00:32:08,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1661621412, now seen corresponding path program 4 times [2022-11-22 00:32:08,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:08,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026120965] [2022-11-22 00:32:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:08,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:08,412 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:08,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252904351] [2022-11-22 00:32:08,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:32:08,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:08,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:08,414 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:08,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:32:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:09,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 00:32:09,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:32:09,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:32:09,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:09,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026120965] [2022-11-22 00:32:09,713 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:09,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252904351] [2022-11-22 00:32:09,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252904351] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:09,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1632500186] [2022-11-22 00:32:09,714 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) [2022-11-22 00:32:09,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:09,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-22 00:32:09,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561737980] [2022-11-22 00:32:09,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:32:09,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 00:32:09,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:09,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 00:32:09,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-22 00:32:09,717 INFO L87 Difference]: Start difference. First operand 204 states and 394 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:12,954 INFO L93 Difference]: Finished difference Result 268 states and 442 transitions. [2022-11-22 00:32:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 00:32:12,954 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-22 00:32:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:12,956 INFO L225 Difference]: With dead ends: 268 [2022-11-22 00:32:12,956 INFO L226 Difference]: Without dead ends: 268 [2022-11-22 00:32:12,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-22 00:32:12,957 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 96 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:12,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 20 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-22 00:32:12,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-22 00:32:12,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2022-11-22 00:32:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 189 states have (on average 2.3386243386243386) internal successors, (442), 227 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 442 transitions. [2022-11-22 00:32:12,966 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 442 transitions. Word has length 16 [2022-11-22 00:32:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:12,966 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 442 transitions. [2022-11-22 00:32:12,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 442 transitions. [2022-11-22 00:32:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-22 00:32:12,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:12,968 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-22 00:32:12,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-22 00:32:13,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 00:32:13,178 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:13,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:13,179 INFO L85 PathProgramCache]: Analyzing trace with hash -510671396, now seen corresponding path program 5 times [2022-11-22 00:32:13,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:13,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491398199] [2022-11-22 00:32:13,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:13,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:13,471 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:13,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857679614] [2022-11-22 00:32:13,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:32:13,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:13,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:13,473 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:13,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 00:32:14,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 00:32:14,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:32:14,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 00:32:14,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-22 00:32:14,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-22 00:32:15,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:15,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491398199] [2022-11-22 00:32:15,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:15,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857679614] [2022-11-22 00:32:15,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857679614] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:15,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1541642553] [2022-11-22 00:32:15,006 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) [2022-11-22 00:32:15,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:15,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-22 00:32:15,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575647527] [2022-11-22 00:32:15,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:32:15,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 00:32:15,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:15,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 00:32:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-22 00:32:15,009 INFO L87 Difference]: Start difference. First operand 228 states and 442 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) 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) [2022-11-22 00:32:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:18,974 INFO L93 Difference]: Finished difference Result 428 states and 832 transitions. [2022-11-22 00:32:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 00:32:18,975 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) 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 28 [2022-11-22 00:32:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:18,977 INFO L225 Difference]: With dead ends: 428 [2022-11-22 00:32:18,977 INFO L226 Difference]: Without dead ends: 428 [2022-11-22 00:32:18,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:32:18,978 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 133 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:18,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 24 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-22 00:32:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-22 00:32:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 251. [2022-11-22 00:32:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 213 states have (on average 2.2816901408450705) internal successors, (486), 250 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 486 transitions. [2022-11-22 00:32:18,989 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 486 transitions. Word has length 28 [2022-11-22 00:32:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:18,990 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 486 transitions. [2022-11-22 00:32:18,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) 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) [2022-11-22 00:32:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 486 transitions. [2022-11-22 00:32:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 00:32:18,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:18,991 INFO L195 NwaCegarLoop]: trace histogram [24, 2, 1, 1, 1] [2022-11-22 00:32:18,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-22 00:32:19,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 00:32:19,198 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:19,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1349062413, now seen corresponding path program 1 times [2022-11-22 00:32:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:19,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596039576] [2022-11-22 00:32:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:19,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:19,466 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:19,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371132885] [2022-11-22 00:32:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:19,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:19,468 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:19,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 00:32:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:21,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 5748 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 00:32:21,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 00:32:21,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 00:32:22,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:22,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596039576] [2022-11-22 00:32:22,478 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:22,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371132885] [2022-11-22 00:32:22,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371132885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:22,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2097257445] [2022-11-22 00:32:22,479 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) [2022-11-22 00:32:22,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:22,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-22 00:32:22,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190840339] [2022-11-22 00:32:22,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:32:22,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-22 00:32:22,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:22,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-22 00:32:22,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:32:22,482 INFO L87 Difference]: Start difference. First operand 251 states and 486 transitions. Second operand has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:26,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:26,278 INFO L93 Difference]: Finished difference Result 330 states and 534 transitions. [2022-11-22 00:32:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-22 00:32:26,279 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 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 29 [2022-11-22 00:32:26,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:26,280 INFO L225 Difference]: With dead ends: 330 [2022-11-22 00:32:26,280 INFO L226 Difference]: Without dead ends: 330 [2022-11-22 00:32:26,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:32:26,280 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 127 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:26,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 36 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-22 00:32:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-22 00:32:26,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 275. [2022-11-22 00:32:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 237 states have (on average 2.2531645569620253) internal successors, (534), 274 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 534 transitions. [2022-11-22 00:32:26,287 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 534 transitions. Word has length 29 [2022-11-22 00:32:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:26,287 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 534 transitions. [2022-11-22 00:32:26,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 534 transitions. [2022-11-22 00:32:26,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-22 00:32:26,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:26,289 INFO L195 NwaCegarLoop]: trace histogram [32, 2, 1, 1, 1] [2022-11-22 00:32:26,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:26,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:26,506 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:26,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:26,506 INFO L85 PathProgramCache]: Analyzing trace with hash -397850611, now seen corresponding path program 2 times [2022-11-22 00:32:26,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:26,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393759723] [2022-11-22 00:32:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:26,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:26,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:26,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139722616] [2022-11-22 00:32:26,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:32:26,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:26,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:26,911 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:26,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 00:32:28,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 00:32:28,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:32:28,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 00:32:28,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-22 00:32:28,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:28,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:28,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393759723] [2022-11-22 00:32:28,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:28,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139722616] [2022-11-22 00:32:28,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139722616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:28,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:28,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:28,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945800032] [2022-11-22 00:32:28,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:28,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:32:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:32:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:32:28,851 INFO L87 Difference]: Start difference. First operand 275 states and 534 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) [2022-11-22 00:32:29,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:29,923 INFO L93 Difference]: Finished difference Result 273 states and 474 transitions. [2022-11-22 00:32:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:29,923 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 37 [2022-11-22 00:32:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:29,925 INFO L225 Difference]: With dead ends: 273 [2022-11-22 00:32:29,925 INFO L226 Difference]: Without dead ends: 273 [2022-11-22 00:32:29,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:32:29,926 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:29,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 4 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 00:32:29,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-11-22 00:32:29,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-11-22 00:32:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 237 states have (on average 2.0) internal successors, (474), 272 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 474 transitions. [2022-11-22 00:32:29,935 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 474 transitions. Word has length 37 [2022-11-22 00:32:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:29,936 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 474 transitions. [2022-11-22 00:32:29,936 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) [2022-11-22 00:32:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 474 transitions. [2022-11-22 00:32:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 00:32:29,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:29,938 INFO L195 NwaCegarLoop]: trace histogram [62, 3, 2, 1, 1] [2022-11-22 00:32:29,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:30,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 00:32:30,148 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:32:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:30,149 INFO L85 PathProgramCache]: Analyzing trace with hash -641945710, now seen corresponding path program 6 times [2022-11-22 00:32:30,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:30,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074154503] [2022-11-22 00:32:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:30,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:30,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:30,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120619765] [2022-11-22 00:32:30,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:32:30,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:30,977 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:30,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 00:34:35,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:34:35,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:34:35,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 14680 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 00:34:35,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1153 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-22 00:34:35,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:34:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1153 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-22 00:34:44,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:44,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074154503] [2022-11-22 00:34:44,275 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:34:44,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120619765] [2022-11-22 00:34:44,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120619765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:34:44,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1498173881] [2022-11-22 00:34:44,276 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) [2022-11-22 00:34:44,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:34:44,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-22 00:34:44,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435360267] [2022-11-22 00:34:44,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:34:44,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 00:34:44,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:44,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 00:34:44,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=115, Unknown=3, NotChecked=0, Total=182 [2022-11-22 00:34:44,278 INFO L87 Difference]: Start difference. First operand 273 states and 474 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:03,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-22 00:35:05,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 00:35:05,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:05,888 INFO L93 Difference]: Finished difference Result 481 states and 852 transitions. [2022-11-22 00:35:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:35:05,889 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-22 00:35:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:05,891 INFO L225 Difference]: With dead ends: 481 [2022-11-22 00:35:05,891 INFO L226 Difference]: Without dead ends: 481 [2022-11-22 00:35:05,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=159, Invalid=255, Unknown=6, NotChecked=0, Total=420 [2022-11-22 00:35:05,892 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 195 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:05,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 20 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 200 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-22 00:35:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-11-22 00:35:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 305. [2022-11-22 00:35:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 269 states have (on average 1.8810408921933086) internal successors, (506), 304 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 506 transitions. [2022-11-22 00:35:05,903 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 506 transitions. Word has length 69 [2022-11-22 00:35:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:05,903 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 506 transitions. [2022-11-22 00:35:05,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 506 transitions. [2022-11-22 00:35:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-22 00:35:05,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:05,905 INFO L195 NwaCegarLoop]: trace histogram [90, 3, 3, 1, 1, 1, 1, 1] [2022-11-22 00:35:06,131 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forcibly destroying the process [2022-11-22 00:35:06,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 137 [2022-11-22 00:35:06,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:06,189 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:35:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:06,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2129777629, now seen corresponding path program 1 times [2022-11-22 00:35:06,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:06,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136643392] [2022-11-22 00:35:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:06,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:07,175 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:35:07,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281259691] [2022-11-22 00:35:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:07,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:07,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:07,177 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:07,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 00:35:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:15,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 21314 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:35:15,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 0 proven. 2889 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-11-22 00:35:15,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 0 proven. 2889 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-11-22 00:35:15,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:15,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136643392] [2022-11-22 00:35:15,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:35:15,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281259691] [2022-11-22 00:35:15,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281259691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:35:15,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1339538350] [2022-11-22 00:35:15,454 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java: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) [2022-11-22 00:35:15,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:35:15,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-22 00:35:15,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616325098] [2022-11-22 00:35:15,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:35:15,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 00:35:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:15,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 00:35:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-11-22 00:35:15,456 INFO L87 Difference]: Start difference. First operand 305 states and 506 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:16,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:16,766 INFO L93 Difference]: Finished difference Result 434 states and 751 transitions. [2022-11-22 00:35:16,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 00:35:16,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-11-22 00:35:16,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:16,769 INFO L225 Difference]: With dead ends: 434 [2022-11-22 00:35:16,769 INFO L226 Difference]: Without dead ends: 434 [2022-11-22 00:35:16,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-11-22 00:35:16,770 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:16,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 16 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 00:35:16,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-22 00:35:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2022-11-22 00:35:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 398 states have (on average 1.8869346733668342) internal successors, (751), 433 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 751 transitions. [2022-11-22 00:35:16,783 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 751 transitions. Word has length 101 [2022-11-22 00:35:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:16,783 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 751 transitions. [2022-11-22 00:35:16,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 751 transitions. [2022-11-22 00:35:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 00:35:16,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:16,785 INFO L195 NwaCegarLoop]: trace histogram [93, 4, 3, 1, 1] [2022-11-22 00:35:16,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 00:35:16,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 00:35:16,995 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 00:35:16,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:16,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1568918316, now seen corresponding path program 7 times [2022-11-22 00:35:16,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:16,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129099023] [2022-11-22 00:35:16,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:16,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:18,093 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:35:18,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290933009] [2022-11-22 00:35:18,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:35:18,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:18,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:18,103 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:18,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9539813-8179-436b-9bf6-deee4ac9c0ab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process