./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:19:28,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:19:28,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:19:28,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:19:28,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:19:28,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:19:28,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:19:28,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:19:28,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:19:28,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:19:28,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:19:28,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:19:28,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:19:28,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:19:28,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:19:28,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:19:28,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:19:28,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:19:28,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:19:28,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:19:28,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:19:28,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:19:28,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:19:28,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:19:28,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:19:28,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:19:28,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:19:28,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:19:28,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:19:28,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:19:28,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:19:28,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:19:28,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:19:28,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:19:28,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:19:28,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:19:28,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:19:28,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:19:28,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:19:28,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:19:28,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:19:28,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 22:19:28,556 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:19:28,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:19:28,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:19:28,558 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:19:28,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:19:28,559 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:19:28,559 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:19:28,559 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:19:28,559 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:19:28,560 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:19:28,561 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:19:28,561 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:19:28,561 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:19:28,561 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:19:28,561 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:19:28,562 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:19:28,562 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:19:28,562 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:19:28,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:19:28,563 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:19:28,563 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:19:28,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:19:28,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:19:28,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:19:28,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:19:28,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:19:28,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:19:28,565 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:19:28,566 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:19:28,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:19:28,566 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:19:28,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:19:28,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:19:28,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:19:28,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:28,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:19:28,569 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:19:28,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:19:28,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:19:28,569 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:19:28,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:19:28,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:19:28,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:19:28,570 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_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-11-25 22:19:28,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:19:28,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:19:28,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:19:28,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:19:28,916 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:19:28,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-25 22:19:32,009 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:19:32,368 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:19:32,374 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-25 22:19:32,387 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/data/b904119f6/89179947b3fe4aa783bcd68c7cdb3e9a/FLAG08325d95a [2022-11-25 22:19:32,401 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/data/b904119f6/89179947b3fe4aa783bcd68c7cdb3e9a [2022-11-25 22:19:32,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:19:32,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:19:32,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:19:32,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:19:32,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:19:32,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:19:32" (1/1) ... [2022-11-25 22:19:32,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23afd62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:32, skipping insertion in model container [2022-11-25 22:19:32,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:19:32" (1/1) ... [2022-11-25 22:19:32,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:19:32,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:19:32,990 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-25 22:19:33,006 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:19:33,007 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:19:33,007 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:19:33,008 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:19:33,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:19:33,084 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:19:33,119 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-25 22:19:33,122 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:19:33,123 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:19:33,123 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:19:33,124 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:19:33,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:19:33,199 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:19:33,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33 WrapperNode [2022-11-25 22:19:33,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:19:33,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:19:33,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:19:33,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:19:33,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,256 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 237 [2022-11-25 22:19:33,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:19:33,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:19:33,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:19:33,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:19:33,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,301 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:19:33,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:19:33,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:19:33,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:19:33,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (1/1) ... [2022-11-25 22:19:33,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:33,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:19:33,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:19:33,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:19:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:19:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:19:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:19:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:19:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:19:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 22:19:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:19:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:19:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:19:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 22:19:33,419 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 22:19:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:19:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:19:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:19:33,423 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 22:19:33,662 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:19:33,664 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:19:34,075 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:19:34,084 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:19:34,085 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-25 22:19:34,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:34 BoogieIcfgContainer [2022-11-25 22:19:34,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:19:34,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:19:34,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:19:34,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:19:34,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:19:32" (1/3) ... [2022-11-25 22:19:34,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a0a1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:19:34, skipping insertion in model container [2022-11-25 22:19:34,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:33" (2/3) ... [2022-11-25 22:19:34,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a0a1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:19:34, skipping insertion in model container [2022-11-25 22:19:34,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:34" (3/3) ... [2022-11-25 22:19:34,096 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-11-25 22:19:34,105 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 22:19:34,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:19:34,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-25 22:19:34,119 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 22:19:34,214 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 22:19:34,262 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 22:19:34,275 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 284 transitions, 576 flow [2022-11-25 22:19:34,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 284 transitions, 576 flow [2022-11-25 22:19:34,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 284 transitions, 576 flow [2022-11-25 22:19:34,474 INFO L130 PetriNetUnfolder]: 28/301 cut-off events. [2022-11-25 22:19:34,474 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-25 22:19:34,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 301 events. 28/301 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 565 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 164. Up to 4 conditions per place. [2022-11-25 22:19:34,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 5400 [2022-11-25 22:20:20,115 WARN L233 SmtUtils]: Spent 14.06s on a formula simplification. DAG size of input: 184 DAG size of output: 183 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:20:26,155 WARN L233 SmtUtils]: Spent 6.04s 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) [2022-11-25 22:20:39,777 WARN L233 SmtUtils]: Spent 13.62s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:20:46,847 WARN L233 SmtUtils]: Spent 7.07s 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) [2022-11-25 22:21:03,731 WARN L233 SmtUtils]: Spent 16.88s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:21:12,845 WARN L233 SmtUtils]: Spent 9.11s 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) [2022-11-25 22:21:29,719 WARN L233 SmtUtils]: Spent 16.87s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:21:37,647 WARN L233 SmtUtils]: Spent 7.92s 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) [2022-11-25 22:21:38,426 INFO L134 LiptonReduction]: Checked pairs total: 5765 [2022-11-25 22:21:38,427 INFO L136 LiptonReduction]: Total number of compositions: 302 [2022-11-25 22:21:38,434 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 54 transitions, 116 flow [2022-11-25 22:21:38,462 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 187 states, 144 states have (on average 3.0625) internal successors, (441), 186 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:38,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:21:38,490 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;@4ad70d4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:21:38,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-25 22:21:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 144 states have (on average 3.0625) internal successors, (441), 186 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 22:21:38,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:38,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 22:21:38,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:21:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:38,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1100258, now seen corresponding path program 1 times [2022-11-25 22:21:38,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:38,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179146681] [2022-11-25 22:21:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:38,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:38,631 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:21:38,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767213789] [2022-11-25 22:21:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:38,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:38,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:38,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:38,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:21:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:38,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:21:38,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:38,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:21:38,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:38,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179146681] [2022-11-25 22:21:38,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:21:38,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767213789] [2022-11-25 22:21:38,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767213789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:38,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:38,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 22:21:38,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775353545] [2022-11-25 22:21:38,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:38,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:21:38,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:21:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:21:38,888 INFO L87 Difference]: Start difference. First operand has 187 states, 144 states have (on average 3.0625) internal successors, (441), 186 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:39,535 INFO L93 Difference]: Finished difference Result 188 states and 363 transitions. [2022-11-25 22:21:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:21:39,538 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 [2022-11-25 22:21:39,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:39,548 INFO L225 Difference]: With dead ends: 188 [2022-11-25 22:21:39,548 INFO L226 Difference]: Without dead ends: 185 [2022-11-25 22:21:39,549 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 [2022-11-25 22:21:39,552 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:39,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:21:39,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-25 22:21:39,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-11-25 22:21:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 145 states have (on average 2.4689655172413794) internal successors, (358), 184 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 358 transitions. [2022-11-25 22:21:39,659 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 358 transitions. Word has length 3 [2022-11-25 22:21:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:39,660 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 358 transitions. [2022-11-25 22:21:39,660 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) [2022-11-25 22:21:39,660 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 358 transitions. [2022-11-25 22:21:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 22:21:39,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:39,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 22:21:39,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:21:39,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 22:21:39,862 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:21:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1100438, now seen corresponding path program 1 times [2022-11-25 22:21:39,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:39,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188401210] [2022-11-25 22:21:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:39,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:39,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:21:39,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825364250] [2022-11-25 22:21:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:39,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:39,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:39,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:21:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:40,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:21:40,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:40,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:21:40,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:40,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188401210] [2022-11-25 22:21:40,127 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:21:40,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825364250] [2022-11-25 22:21:40,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825364250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:40,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:40,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:21:40,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285813197] [2022-11-25 22:21:40,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:40,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:21:40,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:21:40,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:21:40,131 INFO L87 Difference]: Start difference. First operand 185 states and 358 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:40,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:40,290 INFO L93 Difference]: Finished difference Result 184 states and 356 transitions. [2022-11-25 22:21:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:21:40,291 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 [2022-11-25 22:21:40,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:40,293 INFO L225 Difference]: With dead ends: 184 [2022-11-25 22:21:40,293 INFO L226 Difference]: Without dead ends: 184 [2022-11-25 22:21:40,293 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 [2022-11-25 22:21:40,295 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:40,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:21:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-25 22:21:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-25 22:21:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 145 states have (on average 2.4551724137931035) internal successors, (356), 183 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 356 transitions. [2022-11-25 22:21:40,315 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 356 transitions. Word has length 3 [2022-11-25 22:21:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:40,315 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 356 transitions. [2022-11-25 22:21:40,316 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) [2022-11-25 22:21:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 356 transitions. [2022-11-25 22:21:40,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 22:21:40,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:40,317 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-11-25 22:21:40,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:21:40,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:40,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:21:40,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:40,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1057485274, now seen corresponding path program 1 times [2022-11-25 22:21:40,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:40,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564739960] [2022-11-25 22:21:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:40,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:40,585 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:21:40,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596349558] [2022-11-25 22:21:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:40,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:40,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:40,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:40,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:21:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:40,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:21:40,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:40,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:21:40,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:40,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564739960] [2022-11-25 22:21:40,731 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:21:40,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596349558] [2022-11-25 22:21:40,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596349558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:40,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:40,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:21:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364563236] [2022-11-25 22:21:40,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:40,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:21:40,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:40,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:21:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:21:40,734 INFO L87 Difference]: Start difference. First operand 184 states and 356 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:41,219 INFO L93 Difference]: Finished difference Result 188 states and 360 transitions. [2022-11-25 22:21:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:21:41,219 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 [2022-11-25 22:21:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:41,221 INFO L225 Difference]: With dead ends: 188 [2022-11-25 22:21:41,221 INFO L226 Difference]: Without dead ends: 188 [2022-11-25 22:21:41,222 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 [2022-11-25 22:21:41,222 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:41,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:21:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-25 22:21:41,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2022-11-25 22:21:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 147 states have (on average 2.4489795918367347) internal successors, (360), 185 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 360 transitions. [2022-11-25 22:21:41,238 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 360 transitions. Word has length 5 [2022-11-25 22:21:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:41,238 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 360 transitions. [2022-11-25 22:21:41,238 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) [2022-11-25 22:21:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 360 transitions. [2022-11-25 22:21:41,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 22:21:41,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:41,239 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 22:21:41,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:21:41,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:41,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:21:41,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1575612660, now seen corresponding path program 1 times [2022-11-25 22:21:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:41,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565269257] [2022-11-25 22:21:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:41,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:41,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:21:41,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770532256] [2022-11-25 22:21:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:41,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:41,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:41,515 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:41,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:21:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:41,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:21:41,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:41,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:41,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:21:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:41,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:41,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565269257] [2022-11-25 22:21:41,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:21:41,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770532256] [2022-11-25 22:21:41,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770532256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:21:41,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1427315270] [2022-11-25 22:21:41,766 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-11-25 22:21:41,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:21:41,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-25 22:21:41,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113539410] [2022-11-25 22:21:41,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:21:41,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:21:41,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:41,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:21:41,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:21:41,777 INFO L87 Difference]: Start difference. First operand 186 states and 360 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:42,189 INFO L93 Difference]: Finished difference Result 198 states and 372 transitions. [2022-11-25 22:21:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:21:42,190 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 [2022-11-25 22:21:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:42,192 INFO L225 Difference]: With dead ends: 198 [2022-11-25 22:21:42,192 INFO L226 Difference]: Without dead ends: 198 [2022-11-25 22:21:42,192 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 [2022-11-25 22:21:42,193 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:42,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 16 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:21:42,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-25 22:21:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2022-11-25 22:21:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 153 states have (on average 2.4313725490196076) internal successors, (372), 191 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 372 transitions. [2022-11-25 22:21:42,217 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 372 transitions. Word has length 6 [2022-11-25 22:21:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:42,218 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 372 transitions. [2022-11-25 22:21:42,218 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) [2022-11-25 22:21:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 372 transitions. [2022-11-25 22:21:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:21:42,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:42,219 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-11-25 22:21:42,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:21:42,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:42,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:21:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1606504870, now seen corresponding path program 2 times [2022-11-25 22:21:42,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:42,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111310322] [2022-11-25 22:21:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:42,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:42,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:21:42,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061000757] [2022-11-25 22:21:42,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:21:42,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:42,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:42,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:42,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:21:42,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 22:21:42,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:21:42,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:21:42,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:21:42,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:21:42,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:42,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111310322] [2022-11-25 22:21:42,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:21:42,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061000757] [2022-11-25 22:21:42,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061000757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:42,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:42,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:21:42,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273345933] [2022-11-25 22:21:42,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:42,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:21:42,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:42,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:21:42,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:21:42,785 INFO L87 Difference]: Start difference. First operand 192 states and 372 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:43,114 INFO L93 Difference]: Finished difference Result 192 states and 370 transitions. [2022-11-25 22:21:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:21:43,115 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 [2022-11-25 22:21:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:43,118 INFO L225 Difference]: With dead ends: 192 [2022-11-25 22:21:43,118 INFO L226 Difference]: Without dead ends: 192 [2022-11-25 22:21:43,118 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 [2022-11-25 22:21:43,119 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:43,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:21:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-25 22:21:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-25 22:21:43,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 153 states have (on average 2.418300653594771) internal successors, (370), 191 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:43,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 370 transitions. [2022-11-25 22:21:43,134 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 370 transitions. Word has length 9 [2022-11-25 22:21:43,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:43,134 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 370 transitions. [2022-11-25 22:21:43,135 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) [2022-11-25 22:21:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 370 transitions. [2022-11-25 22:21:43,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 22:21:43,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:43,136 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-11-25 22:21:43,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:21:43,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:43,342 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:21:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:43,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1737963036, now seen corresponding path program 3 times [2022-11-25 22:21:43,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:43,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989461428] [2022-11-25 22:21:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:43,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:43,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:21:43,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672084216] [2022-11-25 22:21:43,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 22:21:43,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:43,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:43,452 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:43,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:21:43,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 22:21:43,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:21:43,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:21:43,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:21:44,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:21:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:21:44,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:44,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989461428] [2022-11-25 22:21:44,143 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:21:44,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672084216] [2022-11-25 22:21:44,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672084216] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:21:44,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1349673681] [2022-11-25 22:21:44,144 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-11-25 22:21:44,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:21:44,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-25 22:21:44,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822380996] [2022-11-25 22:21:44,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:21:44,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:21:44,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:21:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:21:44,147 INFO L87 Difference]: Start difference. First operand 192 states and 370 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:45,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:45,769 INFO L93 Difference]: Finished difference Result 220 states and 394 transitions. [2022-11-25 22:21:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:21:45,771 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 [2022-11-25 22:21:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:45,772 INFO L225 Difference]: With dead ends: 220 [2022-11-25 22:21:45,773 INFO L226 Difference]: Without dead ends: 220 [2022-11-25 22:21:45,773 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 [2022-11-25 22:21:45,774 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 40 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:45,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 12 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 22:21:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-25 22:21:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 204. [2022-11-25 22:21:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 165 states have (on average 2.3878787878787877) internal successors, (394), 203 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 394 transitions. [2022-11-25 22:21:45,785 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 394 transitions. Word has length 10 [2022-11-25 22:21:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:45,785 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 394 transitions. [2022-11-25 22:21:45,785 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) [2022-11-25 22:21:45,786 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 394 transitions. [2022-11-25 22:21:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 22:21:45,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:45,786 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-11-25 22:21:45,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:21:45,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 22:21:45,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:21:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1661621412, now seen corresponding path program 4 times [2022-11-25 22:21:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:45,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013083065] [2022-11-25 22:21:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:45,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:46,152 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:21:46,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799714749] [2022-11-25 22:21:46,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 22:21:46,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:46,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:46,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:46,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:21:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:47,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:21:47,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:21:47,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:21:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:21:47,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:47,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013083065] [2022-11-25 22:21:47,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:21:47,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799714749] [2022-11-25 22:21:47,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799714749] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:21:47,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [350695041] [2022-11-25 22:21:47,633 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-11-25 22:21:47,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:21:47,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-25 22:21:47,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844096690] [2022-11-25 22:21:47,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:21:47,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 22:21:47,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:47,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 22:21:47,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 22:21:47,635 INFO L87 Difference]: Start difference. First operand 204 states and 394 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:50,777 INFO L93 Difference]: Finished difference Result 268 states and 442 transitions. [2022-11-25 22:21:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 22:21:50,777 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 [2022-11-25 22:21:50,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:50,779 INFO L225 Difference]: With dead ends: 268 [2022-11-25 22:21:50,779 INFO L226 Difference]: Without dead ends: 268 [2022-11-25 22:21:50,780 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 [2022-11-25 22:21:50,781 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 96 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:50,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 20 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-25 22:21:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-25 22:21:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2022-11-25 22:21:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 189 states have (on average 2.3386243386243386) internal successors, (442), 227 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 442 transitions. [2022-11-25 22:21:50,790 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 442 transitions. Word has length 16 [2022-11-25 22:21:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:50,790 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 442 transitions. [2022-11-25 22:21:50,790 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) [2022-11-25 22:21:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 442 transitions. [2022-11-25 22:21:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 22:21:50,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:50,792 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-25 22:21:50,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 22:21:51,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:51,002 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:21:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -510671396, now seen corresponding path program 5 times [2022-11-25 22:21:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:51,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574011682] [2022-11-25 22:21:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:51,292 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:21:51,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301934863] [2022-11-25 22:21:51,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:21:51,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:51,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:51,294 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:51,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 22:21:52,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 22:21:52,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:21:52,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:21:52,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-25 22:21:52,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:21:52,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:52,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574011682] [2022-11-25 22:21:52,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:21:52,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301934863] [2022-11-25 22:21:52,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301934863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:52,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:52,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:21:52,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784254765] [2022-11-25 22:21:52,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:52,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:21:52,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:52,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:21:52,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:21:52,386 INFO L87 Difference]: Start difference. First operand 228 states and 442 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) [2022-11-25 22:21:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:53,175 INFO L93 Difference]: Finished difference Result 226 states and 419 transitions. [2022-11-25 22:21:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:21:53,176 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 28 [2022-11-25 22:21:53,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:53,177 INFO L225 Difference]: With dead ends: 226 [2022-11-25 22:21:53,178 INFO L226 Difference]: Without dead ends: 226 [2022-11-25 22:21:53,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:21:53,179 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:53,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:21:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-25 22:21:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-11-25 22:21:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 189 states have (on average 2.2169312169312168) internal successors, (419), 225 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 419 transitions. [2022-11-25 22:21:53,189 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 419 transitions. Word has length 28 [2022-11-25 22:21:53,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:53,190 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 419 transitions. [2022-11-25 22:21:53,190 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) [2022-11-25 22:21:53,190 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 419 transitions. [2022-11-25 22:21:53,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 22:21:53,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:53,192 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-25 22:21:53,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 22:21:53,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:53,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:21:53,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash -510671345, now seen corresponding path program 1 times [2022-11-25 22:21:53,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:53,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448512069] [2022-11-25 22:21:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:53,651 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:21:53,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774262163] [2022-11-25 22:21:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:53,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:53,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:53,666 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:53,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 22:21:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:55,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 5514 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 22:21:55,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:21:56,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:21:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:21:56,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:56,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448512069] [2022-11-25 22:21:56,880 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:21:56,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774262163] [2022-11-25 22:21:56,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774262163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:21:56,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [688686467] [2022-11-25 22:21:56,881 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-11-25 22:21:56,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:21:56,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-25 22:21:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344224181] [2022-11-25 22:21:56,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:21:56,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 22:21:56,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 22:21:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-25 22:21:56,884 INFO L87 Difference]: Start difference. First operand 226 states and 419 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) [2022-11-25 22:22:01,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:01,668 INFO L93 Difference]: Finished difference Result 270 states and 443 transitions. [2022-11-25 22:22:01,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 22:22:01,668 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 [2022-11-25 22:22:01,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:01,670 INFO L225 Difference]: With dead ends: 270 [2022-11-25 22:22:01,670 INFO L226 Difference]: Without dead ends: 270 [2022-11-25 22:22:01,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-25 22:22:01,671 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 70 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:01,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 32 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-25 22:22:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-25 22:22:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 242. [2022-11-25 22:22:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 205 states have (on average 2.1609756097560977) internal successors, (443), 241 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:22:01,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 443 transitions. [2022-11-25 22:22:01,679 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 443 transitions. Word has length 28 [2022-11-25 22:22:01,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:01,680 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 443 transitions. [2022-11-25 22:22:01,680 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) [2022-11-25 22:22:01,680 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 443 transitions. [2022-11-25 22:22:01,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 22:22:01,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:01,681 INFO L195 NwaCegarLoop]: trace histogram [31, 2, 1, 1, 1] [2022-11-25 22:22:01,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-25 22:22:01,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 22:22:01,900 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:22:01,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash 541355279, now seen corresponding path program 2 times [2022-11-25 22:22:01,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:01,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66437116] [2022-11-25 22:22:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:01,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:02,260 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:22:02,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018381194] [2022-11-25 22:22:02,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:22:02,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:22:02,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:22:02,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:22:02,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 22:22:04,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 22:22:04,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:22:04,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:22:04,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:22:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-25 22:22:04,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:22:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-25 22:22:04,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:04,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66437116] [2022-11-25 22:22:04,456 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:22:04,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018381194] [2022-11-25 22:22:04,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018381194] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:22:04,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1680319539] [2022-11-25 22:22:04,457 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-11-25 22:22:04,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:22:04,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-25 22:22:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639109377] [2022-11-25 22:22:04,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:22:04,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:22:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:22:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:22:04,459 INFO L87 Difference]: Start difference. First operand 242 states and 443 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:22:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:08,311 INFO L93 Difference]: Finished difference Result 449 states and 820 transitions. [2022-11-25 22:22:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:22:08,312 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-25 22:22:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:08,314 INFO L225 Difference]: With dead ends: 449 [2022-11-25 22:22:08,314 INFO L226 Difference]: Without dead ends: 449 [2022-11-25 22:22:08,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-25 22:22:08,315 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 107 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:08,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 20 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 22:22:08,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-25 22:22:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 273. [2022-11-25 22:22:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 237 states have (on average 2.0) internal successors, (474), 272 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:22:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 474 transitions. [2022-11-25 22:22:08,327 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 474 transitions. Word has length 36 [2022-11-25 22:22:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:08,327 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 474 transitions. [2022-11-25 22:22:08,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:22:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 474 transitions. [2022-11-25 22:22:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 22:22:08,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:08,329 INFO L195 NwaCegarLoop]: trace histogram [62, 3, 2, 1, 1] [2022-11-25 22:22:08,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 22:22:08,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 22:22:08,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:22:08,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:08,541 INFO L85 PathProgramCache]: Analyzing trace with hash -641945659, now seen corresponding path program 3 times [2022-11-25 22:22:08,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:08,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912820065] [2022-11-25 22:22:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:08,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:09,338 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:22:09,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839844668] [2022-11-25 22:22:09,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 22:22:09,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:22:09,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:22:09,340 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:22:09,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 22:24:30,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 22:24:30,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:24:30,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 14680 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:24:30,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 1150 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2022-11-25 22:24:30,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:24:30,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:24:30,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912820065] [2022-11-25 22:24:30,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:24:30,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839844668] [2022-11-25 22:24:30,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839844668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:24:30,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:24:30,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:24:30,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054740769] [2022-11-25 22:24:30,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:24:30,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:24:30,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:24:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:24:30,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:24:30,343 INFO L87 Difference]: Start difference. First operand 273 states and 474 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:24:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:24:31,039 INFO L93 Difference]: Finished difference Result 272 states and 445 transitions. [2022-11-25 22:24:31,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:24:31,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 22:24:31,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:24:31,041 INFO L225 Difference]: With dead ends: 272 [2022-11-25 22:24:31,041 INFO L226 Difference]: Without dead ends: 272 [2022-11-25 22:24:31,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:24:31,042 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 68 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:24:31,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 8 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 22:24:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-25 22:24:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 241. [2022-11-25 22:24:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 206 states have (on average 2.004854368932039) internal successors, (413), 240 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:24:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 413 transitions. [2022-11-25 22:24:31,051 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 413 transitions. Word has length 69 [2022-11-25 22:24:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:24:31,053 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 413 transitions. [2022-11-25 22:24:31,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:24:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 413 transitions. [2022-11-25 22:24:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 22:24:31,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:24:31,060 INFO L195 NwaCegarLoop]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 22:24:31,274 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forcibly destroying the process [2022-11-25 22:24:31,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 22:24:31,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:31,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:24:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:24:31,320 INFO L85 PathProgramCache]: Analyzing trace with hash -640988123, now seen corresponding path program 1 times [2022-11-25 22:24:31,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:24:31,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009980048] [2022-11-25 22:24:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:24:31,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:24:32,087 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:24:32,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191275671] [2022-11-25 22:24:32,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:24:32,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:32,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:24:32,089 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:24:32,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 22:24:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:24:37,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 14254 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:24:37,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-25 22:24:38,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:24:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-25 22:24:38,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:24:38,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009980048] [2022-11-25 22:24:38,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:24:38,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191275671] [2022-11-25 22:24:38,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191275671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:24:38,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [467286280] [2022-11-25 22:24:38,135 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-11-25 22:24:38,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:24:38,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-25 22:24:38,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690669795] [2022-11-25 22:24:38,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:24:38,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:24:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:24:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:24:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:24:38,138 INFO L87 Difference]: Start difference. First operand 241 states and 413 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:24:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:24:39,512 INFO L93 Difference]: Finished difference Result 369 states and 545 transitions. [2022-11-25 22:24:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:24:39,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 22:24:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:24:39,515 INFO L225 Difference]: With dead ends: 369 [2022-11-25 22:24:39,515 INFO L226 Difference]: Without dead ends: 369 [2022-11-25 22:24:39,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:24:39,516 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:24:39,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 22:24:39,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-25 22:24:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2022-11-25 22:24:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 334 states have (on average 1.6317365269461077) internal successors, (545), 368 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:24:39,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 545 transitions. [2022-11-25 22:24:39,528 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 545 transitions. Word has length 69 [2022-11-25 22:24:39,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:24:39,529 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 545 transitions. [2022-11-25 22:24:39,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:24:39,529 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 545 transitions. [2022-11-25 22:24:39,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-25 22:24:39,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:24:39,532 INFO L195 NwaCegarLoop]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1] [2022-11-25 22:24:39,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 22:24:39,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:39,738 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:24:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:24:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash -677893371, now seen corresponding path program 2 times [2022-11-25 22:24:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:24:39,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848611395] [2022-11-25 22:24:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:24:39,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:24:41,823 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:24:41,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610564848] [2022-11-25 22:24:41,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:24:41,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:41,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:24:41,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:24:41,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 22:24:49,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 22:24:49,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:24:49,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:24:49,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2022-11-25 22:24:49,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:24:49,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:24:49,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848611395] [2022-11-25 22:24:49,319 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:24:49,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610564848] [2022-11-25 22:24:49,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610564848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:24:49,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:24:49,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:24:49,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112257424] [2022-11-25 22:24:49,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:24:49,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:24:49,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:24:49,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:24:49,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:24:49,322 INFO L87 Difference]: Start difference. First operand 369 states and 545 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:24:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:24:49,761 INFO L93 Difference]: Finished difference Result 350 states and 505 transitions. [2022-11-25 22:24:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:24:49,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2022-11-25 22:24:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:24:49,763 INFO L225 Difference]: With dead ends: 350 [2022-11-25 22:24:49,764 INFO L226 Difference]: Without dead ends: 350 [2022-11-25 22:24:49,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:24:49,764 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:24:49,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 8 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:24:49,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-25 22:24:49,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2022-11-25 22:24:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 322 states have (on average 1.5683229813664596) internal successors, (505), 349 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:24:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 505 transitions. [2022-11-25 22:24:49,776 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 505 transitions. Word has length 197 [2022-11-25 22:24:49,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:24:49,777 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 505 transitions. [2022-11-25 22:24:49,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:24:49,777 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 505 transitions. [2022-11-25 22:24:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-25 22:24:49,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:24:49,780 INFO L195 NwaCegarLoop]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1] [2022-11-25 22:24:49,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 22:24:49,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 22:24:49,994 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:24:49,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:24:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash -677893370, now seen corresponding path program 1 times [2022-11-25 22:24:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:24:49,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101744329] [2022-11-25 22:24:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:24:49,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:24:52,057 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:24:52,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852061009] [2022-11-25 22:24:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:24:52,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:52,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:24:52,064 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:24:52,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 22:25:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:08,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 42494 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:25:08,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2022-11-25 22:25:08,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2022-11-25 22:25:09,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:09,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101744329] [2022-11-25 22:25:09,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:25:09,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852061009] [2022-11-25 22:25:09,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852061009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:09,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [363633373] [2022-11-25 22:25:09,348 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-11-25 22:25:09,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:25:09,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-25 22:25:09,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100714861] [2022-11-25 22:25:09,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:25:09,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:25:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:25:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:25:09,351 INFO L87 Difference]: Start difference. First operand 350 states and 505 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:10,926 INFO L93 Difference]: Finished difference Result 478 states and 637 transitions. [2022-11-25 22:25:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:25:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 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 197 [2022-11-25 22:25:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:10,928 INFO L225 Difference]: With dead ends: 478 [2022-11-25 22:25:10,928 INFO L226 Difference]: Without dead ends: 478 [2022-11-25 22:25:10,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 378 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:25:10,929 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:10,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 22:25:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-25 22:25:10,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2022-11-25 22:25:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 450 states have (on average 1.4155555555555555) internal successors, (637), 477 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:10,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 637 transitions. [2022-11-25 22:25:10,940 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 637 transitions. Word has length 197 [2022-11-25 22:25:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:10,941 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 637 transitions. [2022-11-25 22:25:10,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 637 transitions. [2022-11-25 22:25:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-25 22:25:10,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:10,946 INFO L195 NwaCegarLoop]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1] [2022-11-25 22:25:11,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:11,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 22:25:11,159 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:25:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash -258536986, now seen corresponding path program 2 times [2022-11-25 22:25:11,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:11,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393884400] [2022-11-25 22:25:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:11,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:14,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:25:14,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168996411] [2022-11-25 22:25:14,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:25:14,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:14,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:14,849 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:14,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 22:25:29,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 22:25:29,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:25:29,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:25:29,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2022-11-25 22:25:29,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:29,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:29,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393884400] [2022-11-25 22:25:29,803 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:25:29,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168996411] [2022-11-25 22:25:29,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168996411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:29,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:29,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:25:29,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736764157] [2022-11-25 22:25:29,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:29,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:25:29,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:29,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:25:29,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:25:29,806 INFO L87 Difference]: Start difference. First operand 478 states and 637 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:30,188 INFO L93 Difference]: Finished difference Result 459 states and 597 transitions. [2022-11-25 22:25:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:25:30,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 325 [2022-11-25 22:25:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:30,191 INFO L225 Difference]: With dead ends: 459 [2022-11-25 22:25:30,191 INFO L226 Difference]: Without dead ends: 459 [2022-11-25 22:25:30,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:25:30,192 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:30,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 4 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:25:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-11-25 22:25:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2022-11-25 22:25:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 438 states have (on average 1.3630136986301369) internal successors, (597), 458 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 597 transitions. [2022-11-25 22:25:30,203 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 597 transitions. Word has length 325 [2022-11-25 22:25:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:30,203 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 597 transitions. [2022-11-25 22:25:30,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 597 transitions. [2022-11-25 22:25:30,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-25 22:25:30,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:30,209 INFO L195 NwaCegarLoop]: trace histogram [300, 10, 10, 2, 1, 1, 1, 1, 1] [2022-11-25 22:25:30,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:30,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:30,422 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 22:25:30,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:30,423 INFO L85 PathProgramCache]: Analyzing trace with hash 654124234, now seen corresponding path program 1 times [2022-11-25 22:25:30,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:30,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306873390] [2022-11-25 22:25:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:30,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:34,032 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:25:34,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671093318] [2022-11-25 22:25:34,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:34,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:34,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:34,037 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:34,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e81ab80e-636a-4e7d-b8c4-41a8d38d5ca7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process