./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS --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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- 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-8393723 [2022-11-19 08:17:36,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:17:36,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:17:36,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:17:36,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:17:36,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:17:36,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:17:36,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:17:36,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:17:36,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:17:36,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:17:36,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:17:36,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:17:36,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:17:36,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:17:36,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:17:36,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:17:36,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:17:36,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:17:36,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:17:36,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:17:36,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:17:36,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:17:36,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:17:36,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:17:36,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:17:36,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:17:36,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:17:36,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:17:36,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:17:36,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:17:36,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:17:36,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:17:36,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:17:36,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:17:36,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:17:36,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:17:36,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:17:36,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:17:36,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:17:36,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:17:36,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 08:17:36,430 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:17:36,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:17:36,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:17:36,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:17:36,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:17:36,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:17:36,443 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:17:36,443 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:17:36,443 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:17:36,443 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:17:36,445 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:17:36,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:17:36,445 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:17:36,445 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:17:36,446 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:17:36,446 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:17:36,446 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:17:36,446 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:17:36,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:17:36,448 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:17:36,448 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:17:36,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:17:36,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:17:36,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:17:36,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:17:36,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:17:36,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:17:36,450 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 08:17:36,450 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:17:36,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:17:36,450 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:17:36,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:17:36,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:17:36,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:17:36,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:17:36,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:17:36,452 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:17:36,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:17:36,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:17:36,453 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:17:36,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:17:36,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:17:36,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:17:36,454 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_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2022-11-19 08:17:36,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:17:36,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:17:36,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:17:36,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:17:36,811 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:17:36,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-19 08:17:36,923 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/data/74ceca9d0/6a4adb13e527411e9dc66c2fac8c4790/FLAG01e7d2890 [2022-11-19 08:17:37,677 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:17:37,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-19 08:17:37,700 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/data/74ceca9d0/6a4adb13e527411e9dc66c2fac8c4790/FLAG01e7d2890 [2022-11-19 08:17:37,849 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/data/74ceca9d0/6a4adb13e527411e9dc66c2fac8c4790 [2022-11-19 08:17:37,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:17:37,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:17:37,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:17:37,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:17:37,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:17:37,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:17:37" (1/1) ... [2022-11-19 08:17:37,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab2f656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:37, skipping insertion in model container [2022-11-19 08:17:37,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:17:37" (1/1) ... [2022-11-19 08:17:37,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:17:37,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:17:38,605 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-19 08:17:38,606 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-19 08:17:38,606 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-19 08:17:38,607 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-19 08:17:38,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:17:38,690 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:17:38,743 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-19 08:17:38,743 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-19 08:17:38,744 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-19 08:17:38,744 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-19 08:17:38,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:17:38,830 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:17:38,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38 WrapperNode [2022-11-19 08:17:38,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:17:38,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:17:38,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:17:38,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:17:38,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,888 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 137 [2022-11-19 08:17:38,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:17:38,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:17:38,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:17:38,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:17:38,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,924 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:17:38,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:17:38,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:17:38,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:17:38,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (1/1) ... [2022-11-19 08:17:38,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:17:38,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:17:38,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:17:39,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:17:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-19 08:17:39,061 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-19 08:17:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:17:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:17:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:17:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:17:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:17:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-19 08:17:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:17:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:17:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:17:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:17:39,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:17:39,065 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 08:17:39,326 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:17:39,329 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:17:39,822 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:17:39,836 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:17:39,837 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 08:17:39,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:17:39 BoogieIcfgContainer [2022-11-19 08:17:39,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:17:39,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:17:39,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:17:39,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:17:39,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:17:37" (1/3) ... [2022-11-19 08:17:39,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24263043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:17:39, skipping insertion in model container [2022-11-19 08:17:39,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:38" (2/3) ... [2022-11-19 08:17:39,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24263043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:17:39, skipping insertion in model container [2022-11-19 08:17:39,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:17:39" (3/3) ... [2022-11-19 08:17:39,855 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2022-11-19 08:17:39,870 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 08:17:39,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:17:39,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-19 08:17:39,884 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 08:17:40,062 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 08:17:40,113 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:17:40,136 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 217 transitions, 444 flow [2022-11-19 08:17:40,147 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 217 transitions, 444 flow [2022-11-19 08:17:40,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 217 transitions, 444 flow [2022-11-19 08:17:40,301 INFO L130 PetriNetUnfolder]: 15/215 cut-off events. [2022-11-19 08:17:40,301 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-19 08:17:40,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 215 events. 15/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 513 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2022-11-19 08:17:40,362 INFO L119 LiptonReduction]: Number of co-enabled transitions 7600 [2022-11-19 08:18:11,668 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification that was a NOOP. DAG size: 167 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:18:16,992 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 165 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:18:52,611 WARN L233 SmtUtils]: Spent 35.07s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:19:06,657 WARN L233 SmtUtils]: Spent 14.04s 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) [2022-11-19 08:19:30,346 WARN L233 SmtUtils]: Spent 23.68s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:19:42,619 WARN L233 SmtUtils]: Spent 12.27s 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) [2022-11-19 08:20:09,815 WARN L233 SmtUtils]: Spent 27.19s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:20:20,613 WARN L233 SmtUtils]: Spent 10.79s 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) [2022-11-19 08:20:40,439 WARN L233 SmtUtils]: Spent 19.82s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:20:50,142 WARN L233 SmtUtils]: Spent 9.70s 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) [2022-11-19 08:20:50,226 INFO L134 LiptonReduction]: Checked pairs total: 7835 [2022-11-19 08:20:50,227 INFO L136 LiptonReduction]: Total number of compositions: 226 [2022-11-19 08:20:50,235 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 92 flow [2022-11-19 08:20:50,283 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:20:50,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:20:50,310 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;@66fae38d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:20:50,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-19 08:20:50,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:20:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:20:50,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:20:50,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:20:50,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:20:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:20:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash 729122, now seen corresponding path program 1 times [2022-11-19 08:20:50,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:20:50,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654683398] [2022-11-19 08:20:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:50,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:20:50,537 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:20:50,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83642998] [2022-11-19 08:20:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:50,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:20:50,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:20:50,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:20:50,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:20:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:20:50,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:20:50,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:20:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:20:50,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:20:50,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:20:50,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654683398] [2022-11-19 08:20:50,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:20:50,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83642998] [2022-11-19 08:20:50,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83642998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:20:50,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:20:50,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:20:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370793396] [2022-11-19 08:20:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:20:50,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:20:50,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:20:50,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:20:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:20:50,810 INFO L87 Difference]: Start difference. First operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 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) [2022-11-19 08:20:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:20:51,371 INFO L93 Difference]: Finished difference Result 273 states and 705 transitions. [2022-11-19 08:20:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:20:51,378 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 [2022-11-19 08:20:51,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:20:51,404 INFO L225 Difference]: With dead ends: 273 [2022-11-19 08:20:51,404 INFO L226 Difference]: Without dead ends: 273 [2022-11-19 08:20:51,405 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 [2022-11-19 08:20:51,413 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:20:51,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 08:20:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-11-19 08:20:51,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-11-19 08:20:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 244 states have (on average 2.889344262295082) internal successors, (705), 272 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:20:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 705 transitions. [2022-11-19 08:20:51,533 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 705 transitions. Word has length 3 [2022-11-19 08:20:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:20:51,534 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 705 transitions. [2022-11-19 08:20:51,534 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) [2022-11-19 08:20:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 705 transitions. [2022-11-19 08:20:51,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:20:51,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:20:51,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:20:51,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:20:51,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 08:20:51,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:20:51,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:20:51,746 INFO L85 PathProgramCache]: Analyzing trace with hash 729268, now seen corresponding path program 1 times [2022-11-19 08:20:51,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:20:51,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911990717] [2022-11-19 08:20:51,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:51,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:20:51,824 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:20:51,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099123493] [2022-11-19 08:20:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:51,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:20:51,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:20:51,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:20:51,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:20:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:20:52,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:20:52,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:20:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:20:52,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:20:52,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:20:52,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911990717] [2022-11-19 08:20:52,065 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:20:52,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099123493] [2022-11-19 08:20:52,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099123493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:20:52,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:20:52,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:20:52,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377612409] [2022-11-19 08:20:52,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:20:52,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:20:52,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:20:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:20:52,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:20:52,070 INFO L87 Difference]: Start difference. First operand 273 states and 705 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) [2022-11-19 08:20:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:20:52,255 INFO L93 Difference]: Finished difference Result 272 states and 703 transitions. [2022-11-19 08:20:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:20:52,256 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 [2022-11-19 08:20:52,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:20:52,259 INFO L225 Difference]: With dead ends: 272 [2022-11-19 08:20:52,260 INFO L226 Difference]: Without dead ends: 272 [2022-11-19 08:20:52,260 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 [2022-11-19 08:20:52,261 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:20:52,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:20:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-19 08:20:52,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-11-19 08:20:52,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 244 states have (on average 2.8811475409836067) internal successors, (703), 271 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:20:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2022-11-19 08:20:52,284 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 3 [2022-11-19 08:20:52,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:20:52,284 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2022-11-19 08:20:52,285 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) [2022-11-19 08:20:52,285 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2022-11-19 08:20:52,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:20:52,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:20:52,286 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-11-19 08:20:52,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:20:52,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:20:52,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:20:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:20:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 700806090, now seen corresponding path program 1 times [2022-11-19 08:20:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:20:52,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042853774] [2022-11-19 08:20:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:52,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:20:52,530 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:20:52,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960050602] [2022-11-19 08:20:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:52,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:20:52,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:20:52,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:20:52,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:20:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:20:52,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:20:52,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:20:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:20:52,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:20:52,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:20:52,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042853774] [2022-11-19 08:20:52,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:20:52,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960050602] [2022-11-19 08:20:52,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960050602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:20:52,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:20:52,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:20:52,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625156955] [2022-11-19 08:20:52,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:20:52,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:20:52,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:20:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:20:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:20:52,725 INFO L87 Difference]: Start difference. First operand 272 states and 703 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) [2022-11-19 08:20:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:20:53,054 INFO L93 Difference]: Finished difference Result 276 states and 707 transitions. [2022-11-19 08:20:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:20:53,055 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 [2022-11-19 08:20:53,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:20:53,058 INFO L225 Difference]: With dead ends: 276 [2022-11-19 08:20:53,058 INFO L226 Difference]: Without dead ends: 276 [2022-11-19 08:20:53,058 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 [2022-11-19 08:20:53,059 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:20:53,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:20:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-19 08:20:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2022-11-19 08:20:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 246 states have (on average 2.8739837398373984) internal successors, (707), 273 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:20:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 707 transitions. [2022-11-19 08:20:53,080 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 707 transitions. Word has length 5 [2022-11-19 08:20:53,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:20:53,080 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 707 transitions. [2022-11-19 08:20:53,080 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) [2022-11-19 08:20:53,080 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 707 transitions. [2022-11-19 08:20:53,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:20:53,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:20:53,081 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 08:20:53,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-19 08:20:53,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:20:53,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:20:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:20:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 251474307, now seen corresponding path program 1 times [2022-11-19 08:20:53,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:20:53,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210642968] [2022-11-19 08:20:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:53,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:20:53,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:20:53,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332420265] [2022-11-19 08:20:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:53,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:20:53,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:20:53,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:20:53,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:20:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:20:53,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:20:53,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:20:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:20:53,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:20:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:20:53,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:20:53,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210642968] [2022-11-19 08:20:53,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:20:53,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332420265] [2022-11-19 08:20:53,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332420265] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:20:53,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [307082381] [2022-11-19 08:20:53,696 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) [2022-11-19 08:20:53,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:20:53,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-19 08:20:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316871120] [2022-11-19 08:20:53,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:20:53,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:20:53,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:20:53,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:20:53,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:20:53,709 INFO L87 Difference]: Start difference. First operand 274 states and 707 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) [2022-11-19 08:20:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:20:54,388 INFO L93 Difference]: Finished difference Result 286 states and 719 transitions. [2022-11-19 08:20:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:20:54,390 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 [2022-11-19 08:20:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:20:54,393 INFO L225 Difference]: With dead ends: 286 [2022-11-19 08:20:54,393 INFO L226 Difference]: Without dead ends: 286 [2022-11-19 08:20:54,394 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 [2022-11-19 08:20:54,395 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:20:54,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 08:20:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-19 08:20:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2022-11-19 08:20:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8531746031746033) internal successors, (719), 279 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:20:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 719 transitions. [2022-11-19 08:20:54,412 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 719 transitions. Word has length 6 [2022-11-19 08:20:54,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:20:54,413 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 719 transitions. [2022-11-19 08:20:54,413 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) [2022-11-19 08:20:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 719 transitions. [2022-11-19 08:20:54,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 08:20:54,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:20:54,414 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-11-19 08:20:54,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:20:54,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-19 08:20:54,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:20:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:20:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1734108662, now seen corresponding path program 2 times [2022-11-19 08:20:54,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:20:54,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57163549] [2022-11-19 08:20:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:54,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:20:54,719 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:20:54,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647079120] [2022-11-19 08:20:54,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:20:54,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:20:54,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:20:54,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:20:54,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:20:55,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 08:20:55,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:20:55,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:20:55,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:20:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 08:20:55,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:20:55,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:20:55,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57163549] [2022-11-19 08:20:55,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:20:55,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647079120] [2022-11-19 08:20:55,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647079120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:20:55,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:20:55,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:20:55,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009390946] [2022-11-19 08:20:55,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:20:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:20:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:20:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:20:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:20:55,061 INFO L87 Difference]: Start difference. First operand 280 states and 719 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) [2022-11-19 08:20:55,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:20:55,362 INFO L93 Difference]: Finished difference Result 280 states and 717 transitions. [2022-11-19 08:20:55,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:20:55,363 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 [2022-11-19 08:20:55,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:20:55,366 INFO L225 Difference]: With dead ends: 280 [2022-11-19 08:20:55,366 INFO L226 Difference]: Without dead ends: 280 [2022-11-19 08:20:55,366 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 [2022-11-19 08:20:55,367 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:20:55,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:20:55,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-19 08:20:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-11-19 08:20:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8452380952380953) internal successors, (717), 279 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:20:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 717 transitions. [2022-11-19 08:20:55,382 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 717 transitions. Word has length 9 [2022-11-19 08:20:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:20:55,382 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 717 transitions. [2022-11-19 08:20:55,383 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) [2022-11-19 08:20:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 717 transitions. [2022-11-19 08:20:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 08:20:55,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:20:55,384 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-11-19 08:20:55,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:20:55,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:20:55,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:20:55,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:20:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2077211443, now seen corresponding path program 3 times [2022-11-19 08:20:55,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:20:55,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071713023] [2022-11-19 08:20:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:20:55,709 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:20:55,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736845494] [2022-11-19 08:20:55,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:20:55,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:20:55,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:20:55,716 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:20:55,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:20:56,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:20:56,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:20:56,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:20:56,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:20:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:20:56,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:20:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:20:56,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:20:56,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071713023] [2022-11-19 08:20:56,527 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:20:56,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736845494] [2022-11-19 08:20:56,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736845494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:20:56,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [359647938] [2022-11-19 08:20:56,529 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) [2022-11-19 08:20:56,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:20:56,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-19 08:20:56,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724024868] [2022-11-19 08:20:56,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:20:56,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 08:20:56,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:20:56,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 08:20:56,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:20:56,532 INFO L87 Difference]: Start difference. First operand 280 states and 717 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) [2022-11-19 08:20:58,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:20:58,178 INFO L93 Difference]: Finished difference Result 308 states and 741 transitions. [2022-11-19 08:20:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 08:20:58,179 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 [2022-11-19 08:20:58,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:20:58,181 INFO L225 Difference]: With dead ends: 308 [2022-11-19 08:20:58,182 INFO L226 Difference]: Without dead ends: 308 [2022-11-19 08:20:58,182 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 [2022-11-19 08:20:58,183 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:20:58,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 08:20:58,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-19 08:20:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2022-11-19 08:20:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 264 states have (on average 2.8068181818181817) internal successors, (741), 291 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:20:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 741 transitions. [2022-11-19 08:20:58,197 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 741 transitions. Word has length 10 [2022-11-19 08:20:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:20:58,197 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 741 transitions. [2022-11-19 08:20:58,197 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) [2022-11-19 08:20:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 741 transitions. [2022-11-19 08:20:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 08:20:58,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:20:58,199 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-11-19 08:20:58,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 08:20:58,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 08:20:58,409 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:20:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:20:58,409 INFO L85 PathProgramCache]: Analyzing trace with hash 889440723, now seen corresponding path program 4 times [2022-11-19 08:20:58,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:20:58,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59116719] [2022-11-19 08:20:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:20:58,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:20:58,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:20:58,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469947766] [2022-11-19 08:20:58,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 08:20:58,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:20:58,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:20:58,601 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:20:58,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:20:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:20:59,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 08:20:59,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:20:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:20:59,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:21:00,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:00,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59116719] [2022-11-19 08:21:00,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:21:00,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469947766] [2022-11-19 08:21:00,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469947766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:00,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [664423897] [2022-11-19 08:21:00,234 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) [2022-11-19 08:21:00,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:21:00,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-19 08:21:00,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843877041] [2022-11-19 08:21:00,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:00,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 08:21:00,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:00,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 08:21:00,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-19 08:21:00,237 INFO L87 Difference]: Start difference. First operand 292 states and 741 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) [2022-11-19 08:21:02,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:02,578 INFO L93 Difference]: Finished difference Result 356 states and 789 transitions. [2022-11-19 08:21:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 08:21:02,579 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 [2022-11-19 08:21:02,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:02,581 INFO L225 Difference]: With dead ends: 356 [2022-11-19 08:21:02,582 INFO L226 Difference]: Without dead ends: 356 [2022-11-19 08:21:02,582 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 [2022-11-19 08:21:02,583 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:02,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 08:21:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-19 08:21:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 316. [2022-11-19 08:21:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 288 states have (on average 2.7395833333333335) internal successors, (789), 315 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 789 transitions. [2022-11-19 08:21:02,596 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 789 transitions. Word has length 16 [2022-11-19 08:21:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:02,597 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 789 transitions. [2022-11-19 08:21:02,597 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) [2022-11-19 08:21:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 789 transitions. [2022-11-19 08:21:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 08:21:02,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:02,598 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-19 08:21:02,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:02,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:02,812 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:21:02,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:02,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1513259245, now seen corresponding path program 5 times [2022-11-19 08:21:02,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:02,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722786787] [2022-11-19 08:21:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:02,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:03,199 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:21:03,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117724132] [2022-11-19 08:21:03,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:21:03,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:03,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:03,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:03,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:21:04,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:21:04,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:04,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:21:04,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-19 08:21:04,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 47 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-19 08:21:09,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:09,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722786787] [2022-11-19 08:21:09,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:21:09,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117724132] [2022-11-19 08:21:09,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117724132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:09,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [391674234] [2022-11-19 08:21:09,333 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) [2022-11-19 08:21:09,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:21:09,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 5 [2022-11-19 08:21:09,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866300028] [2022-11-19 08:21:09,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:09,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:21:09,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:09,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:21:09,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=22, Unknown=2, NotChecked=0, Total=42 [2022-11-19 08:21:09,337 INFO L87 Difference]: Start difference. First operand 316 states and 789 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-11-19 08:21:09,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:09,754 INFO L93 Difference]: Finished difference Result 366 states and 886 transitions. [2022-11-19 08:21:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:21:09,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 [2022-11-19 08:21:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:09,758 INFO L225 Difference]: With dead ends: 366 [2022-11-19 08:21:09,758 INFO L226 Difference]: Without dead ends: 366 [2022-11-19 08:21:09,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=18, Invalid=22, Unknown=2, NotChecked=0, Total=42 [2022-11-19 08:21:09,759 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:09,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 51 Unchecked, 0.4s Time] [2022-11-19 08:21:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-19 08:21:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2022-11-19 08:21:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 336 states have (on average 2.636904761904762) internal successors, (886), 363 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 886 transitions. [2022-11-19 08:21:09,774 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 886 transitions. Word has length 28 [2022-11-19 08:21:09,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:09,775 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 886 transitions. [2022-11-19 08:21:09,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-11-19 08:21:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 886 transitions. [2022-11-19 08:21:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 08:21:09,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:09,776 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-19 08:21:09,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:09,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:09,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:21:09,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1513259203, now seen corresponding path program 1 times [2022-11-19 08:21:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:09,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931321990] [2022-11-19 08:21:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:10,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:21:10,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961222769] [2022-11-19 08:21:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:10,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:10,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:10,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:10,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 08:21:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:12,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 5511 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 08:21:12,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:21:13,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:21:14,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:14,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931321990] [2022-11-19 08:21:14,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:21:14,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961222769] [2022-11-19 08:21:14,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961222769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:14,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1739094379] [2022-11-19 08:21:14,003 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) [2022-11-19 08:21:14,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:21:14,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-19 08:21:14,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330518526] [2022-11-19 08:21:14,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:14,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-19 08:21:14,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:14,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-19 08:21:14,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-19 08:21:14,006 INFO L87 Difference]: Start difference. First operand 364 states and 886 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) [2022-11-19 08:21:17,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:17,270 INFO L93 Difference]: Finished difference Result 452 states and 950 transitions. [2022-11-19 08:21:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 08:21:17,271 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 28 [2022-11-19 08:21:17,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:17,274 INFO L225 Difference]: With dead ends: 452 [2022-11-19 08:21:17,274 INFO L226 Difference]: Without dead ends: 452 [2022-11-19 08:21:17,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-19 08:21:17,275 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:17,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 0 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 08:21:17,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-19 08:21:17,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 396. [2022-11-19 08:21:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 368 states have (on average 2.5815217391304346) internal successors, (950), 395 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:17,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 950 transitions. [2022-11-19 08:21:17,291 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 950 transitions. Word has length 28 [2022-11-19 08:21:17,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:17,291 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 950 transitions. [2022-11-19 08:21:17,292 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) [2022-11-19 08:21:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 950 transitions. [2022-11-19 08:21:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 08:21:17,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:17,293 INFO L195 NwaCegarLoop]: trace histogram [31, 2, 1, 1, 1] [2022-11-19 08:21:17,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:17,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-19 08:21:17,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:21:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash 176439997, now seen corresponding path program 2 times [2022-11-19 08:21:17,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:17,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034019806] [2022-11-19 08:21:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:17,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:18,014 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:21:18,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367898890] [2022-11-19 08:21:18,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:21:18,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:18,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:18,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:18,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 08:21:20,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:21:20,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:20,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:21:20,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-19 08:21:20,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:21:20,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:20,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034019806] [2022-11-19 08:21:20,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:21:20,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367898890] [2022-11-19 08:21:20,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367898890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:21:20,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:21:20,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:21:20,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737211420] [2022-11-19 08:21:20,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:21:20,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:21:20,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:20,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:21:20,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:21:20,372 INFO L87 Difference]: Start difference. First operand 396 states and 950 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:20,891 INFO L93 Difference]: Finished difference Result 394 states and 858 transitions. [2022-11-19 08:21:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:21:20,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-19 08:21:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:20,895 INFO L225 Difference]: With dead ends: 394 [2022-11-19 08:21:20,895 INFO L226 Difference]: Without dead ends: 394 [2022-11-19 08:21:20,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:21:20,896 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:20,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 08:21:20,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-19 08:21:20,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2022-11-19 08:21:20,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 368 states have (on average 2.3315217391304346) internal successors, (858), 393 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 858 transitions. [2022-11-19 08:21:20,911 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 858 transitions. Word has length 36 [2022-11-19 08:21:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:20,911 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 858 transitions. [2022-11-19 08:21:20,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:20,912 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 858 transitions. [2022-11-19 08:21:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 08:21:20,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:20,914 INFO L195 NwaCegarLoop]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:21:20,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:21,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 08:21:21,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:21:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 883584363, now seen corresponding path program 1 times [2022-11-19 08:21:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:21,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018069564] [2022-11-19 08:21:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:22,309 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:21:22,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551884402] [2022-11-19 08:21:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:22,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:22,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:22,311 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:22,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 08:21:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:28,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 14243 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:21:28,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-19 08:21:28,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-19 08:21:28,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:28,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018069564] [2022-11-19 08:21:28,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:21:28,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551884402] [2022-11-19 08:21:28,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551884402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:28,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [950880806] [2022-11-19 08:21:28,508 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) [2022-11-19 08:21:28,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:21:28,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-19 08:21:28,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675020088] [2022-11-19 08:21:28,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:28,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:21:28,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:28,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:21:28,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:21:28,513 INFO L87 Difference]: Start difference. First operand 394 states and 858 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:29,624 INFO L93 Difference]: Finished difference Result 458 states and 982 transitions. [2022-11-19 08:21:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:21:29,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-19 08:21:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:29,629 INFO L225 Difference]: With dead ends: 458 [2022-11-19 08:21:29,629 INFO L226 Difference]: Without dead ends: 458 [2022-11-19 08:21:29,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:21:29,630 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:29,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 08:21:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-19 08:21:29,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2022-11-19 08:21:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 433 states have (on average 2.2678983833718247) internal successors, (982), 457 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 982 transitions. [2022-11-19 08:21:29,650 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 982 transitions. Word has length 71 [2022-11-19 08:21:29,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:29,651 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 982 transitions. [2022-11-19 08:21:29,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 982 transitions. [2022-11-19 08:21:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 08:21:29,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:29,654 INFO L195 NwaCegarLoop]: trace histogram [91, 4, 3, 1, 1] [2022-11-19 08:21:29,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:29,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:29,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 08:21:29,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:29,879 INFO L85 PathProgramCache]: Analyzing trace with hash -54315133, now seen corresponding path program 6 times [2022-11-19 08:21:29,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:29,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110584536] [2022-11-19 08:21:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:29,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:31,117 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:21:31,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004728999] [2022-11-19 08:21:31,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:21:31,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:31,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:31,122 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:31,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b78fab7-245e-4137-b4a6-57dfb0fe4df7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process