./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh --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 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb --- 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-2329fc7 [2022-12-14 14:17:03,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:17:03,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:17:03,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:17:03,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:17:03,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:17:03,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:17:03,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:17:03,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:17:03,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:17:03,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:17:03,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:17:03,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:17:03,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:17:03,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:17:03,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:17:03,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:17:03,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:17:03,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:17:03,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:17:03,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:17:03,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:17:03,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:17:03,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:17:03,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:17:03,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:17:03,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:17:03,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:17:03,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:17:03,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:17:03,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:17:03,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:17:03,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:17:03,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:17:03,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:17:03,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:17:03,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:17:03,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:17:03,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:17:03,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:17:03,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:17:03,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 14:17:03,207 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:17:03,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:17:03,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:17:03,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:17:03,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:17:03,209 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:17:03,209 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:17:03,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:17:03,210 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:17:03,210 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:17:03,210 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:17:03,210 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:17:03,210 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:17:03,210 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:17:03,211 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:17:03,211 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:17:03,211 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:17:03,211 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:17:03,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:17:03,212 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:17:03,212 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:17:03,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:17:03,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:17:03,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:17:03,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:17:03,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:17:03,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:17:03,214 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:17:03,214 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:17:03,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:17:03,214 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:17:03,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:17:03,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:17:03,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:17:03,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:17:03,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:17:03,215 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:17:03,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:17:03,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:17:03,216 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:17:03,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:17:03,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:17:03,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:17:03,216 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_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb [2022-12-14 14:17:03,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:17:03,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:17:03,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:17:03,428 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:17:03,428 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:17:03,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-12-14 14:17:06,003 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:17:06,158 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:17:06,159 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-12-14 14:17:06,164 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/data/f6e6aea53/66bb9a9544c146639b7d061239d7a59e/FLAG512503a98 [2022-12-14 14:17:06,174 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/data/f6e6aea53/66bb9a9544c146639b7d061239d7a59e [2022-12-14 14:17:06,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:17:06,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:17:06,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:17:06,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:17:06,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:17:06,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4215acba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06, skipping insertion in model container [2022-12-14 14:17:06,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:17:06,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:17:06,341 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_0ef55f98-6448-4782-a20a-5f61133f4fa8/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-12-14 14:17:06,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:17:06,353 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:17:06,382 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_0ef55f98-6448-4782-a20a-5f61133f4fa8/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-12-14 14:17:06,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:17:06,396 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:17:06,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06 WrapperNode [2022-12-14 14:17:06,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:17:06,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:17:06,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:17:06,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:17:06,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,439 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 706 [2022-12-14 14:17:06,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:17:06,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:17:06,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:17:06,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:17:06,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,470 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:17:06,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:17:06,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:17:06,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:17:06,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (1/1) ... [2022-12-14 14:17:06,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:17:06,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:17:06,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:17:06,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:17:06,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:17:06,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:17:06,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:17:06,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:17:06,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 14:17:06,535 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 14:17:06,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 14:17:06,535 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 14:17:06,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-14 14:17:06,535 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-14 14:17:06,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:17:06,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:17:06,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:17:06,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:17:06,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:17:06,537 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 14:17:06,650 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:17:06,652 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:17:07,334 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:17:07,349 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:17:07,349 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-14 14:17:07,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:17:07 BoogieIcfgContainer [2022-12-14 14:17:07,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:17:07,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:17:07,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:17:07,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:17:07,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:17:06" (1/3) ... [2022-12-14 14:17:07,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4231a213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:17:07, skipping insertion in model container [2022-12-14 14:17:07,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:06" (2/3) ... [2022-12-14 14:17:07,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4231a213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:17:07, skipping insertion in model container [2022-12-14 14:17:07,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:17:07" (3/3) ... [2022-12-14 14:17:07,362 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2022-12-14 14:17:07,370 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 14:17:07,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:17:07,389 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-12-14 14:17:07,389 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 14:17:07,576 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 14:17:07,621 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 14:17:07,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 889 places, 970 transitions, 1964 flow [2022-12-14 14:17:07,639 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 889 places, 970 transitions, 1964 flow [2022-12-14 14:17:07,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 889 places, 970 transitions, 1964 flow [2022-12-14 14:17:08,046 INFO L130 PetriNetUnfolder]: 91/967 cut-off events. [2022-12-14 14:17:08,047 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-14 14:17:08,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 967 events. 91/967 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4086 event pairs, 0 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 730. Up to 2 conditions per place. [2022-12-14 14:17:08,198 INFO L119 LiptonReduction]: Number of co-enabled transitions 354078 [2022-12-14 14:17:54,690 INFO L134 LiptonReduction]: Checked pairs total: 353719 [2022-12-14 14:17:54,690 INFO L136 LiptonReduction]: Total number of compositions: 1294 [2022-12-14 14:17:54,697 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 114 places, 119 transitions, 262 flow [2022-12-14 14:17:55,557 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 42329 states, 35465 states have (on average 4.489412096433103) internal successors, (159217), 42328 states have internal predecessors, (159217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:17:55,575 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;@1f6de004, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:17:55,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2022-12-14 14:17:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 42329 states, 35465 states have (on average 4.489412096433103) internal successors, (159217), 42328 states have internal predecessors, (159217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 14:17:55,628 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:55,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 14:17:55,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:17:55,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash 138104, now seen corresponding path program 1 times [2022-12-14 14:17:55,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:55,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417759273] [2022-12-14 14:17:55,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:55,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:55,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:55,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417759273] [2022-12-14 14:17:55,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417759273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:55,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:55,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:17:55,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145036867] [2022-12-14 14:17:55,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:55,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:17:55,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:55,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:17:55,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:17:55,939 INFO L87 Difference]: Start difference. First operand has 42329 states, 35465 states have (on average 4.489412096433103) internal successors, (159217), 42328 states have internal predecessors, (159217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:56,897 INFO L93 Difference]: Finished difference Result 43795 states and 166707 transitions. [2022-12-14 14:17:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:17:56,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-12-14 14:17:56,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:57,256 INFO L225 Difference]: With dead ends: 43795 [2022-12-14 14:17:57,256 INFO L226 Difference]: Without dead ends: 43795 [2022-12-14 14:17:57,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:17:57,259 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:57,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:17:57,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43795 states. [2022-12-14 14:17:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43795 to 21904. [2022-12-14 14:17:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21904 states, 19199 states have (on average 4.3420490650554715) internal successors, (83363), 21903 states have internal predecessors, (83363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21904 states to 21904 states and 83363 transitions. [2022-12-14 14:17:58,277 INFO L78 Accepts]: Start accepts. Automaton has 21904 states and 83363 transitions. Word has length 2 [2022-12-14 14:17:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:58,278 INFO L495 AbstractCegarLoop]: Abstraction has 21904 states and 83363 transitions. [2022-12-14 14:17:58,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 21904 states and 83363 transitions. [2022-12-14 14:17:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:17:58,278 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:58,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:17:58,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:17:58,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:17:58,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:58,279 INFO L85 PathProgramCache]: Analyzing trace with hash 4288291, now seen corresponding path program 1 times [2022-12-14 14:17:58,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:58,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314489342] [2022-12-14 14:17:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:58,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:58,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:58,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314489342] [2022-12-14 14:17:58,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314489342] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:17:58,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250559532] [2022-12-14 14:17:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:58,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:17:58,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:17:58,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:17:58,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:17:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:58,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:17:58,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:17:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:58,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:17:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:58,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250559532] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:17:58,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [689648164] [2022-12-14 14:17:58,551 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) [2022-12-14 14:17:58,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:17:58,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-14 14:17:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545286702] [2022-12-14 14:17:58,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:17:58,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:17:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:58,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:17:58,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:17:58,556 INFO L87 Difference]: Start difference. First operand 21904 states and 83363 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:00,150 INFO L93 Difference]: Finished difference Result 109477 states and 416766 transitions. [2022-12-14 14:18:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:18:00,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 14:18:00,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:00,881 INFO L225 Difference]: With dead ends: 109477 [2022-12-14 14:18:00,881 INFO L226 Difference]: Without dead ends: 109477 [2022-12-14 14:18:00,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:18:00,882 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 444 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:00,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 0 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 14:18:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109477 states. [2022-12-14 14:18:02,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109477 to 21913. [2022-12-14 14:18:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21913 states, 19208 states have (on average 4.341420241566015) internal successors, (83390), 21912 states have internal predecessors, (83390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21913 states to 21913 states and 83390 transitions. [2022-12-14 14:18:02,158 INFO L78 Accepts]: Start accepts. Automaton has 21913 states and 83390 transitions. Word has length 3 [2022-12-14 14:18:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:02,159 INFO L495 AbstractCegarLoop]: Abstraction has 21913 states and 83390 transitions. [2022-12-14 14:18:02,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 21913 states and 83390 transitions. [2022-12-14 14:18:02,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:18:02,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:02,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:18:02,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:18:02,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:02,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:02,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash 4288290, now seen corresponding path program 1 times [2022-12-14 14:18:02,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:02,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664172744] [2022-12-14 14:18:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:02,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:18:02,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:02,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664172744] [2022-12-14 14:18:02,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664172744] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:02,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569658022] [2022-12-14 14:18:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:02,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:02,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:02,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:02,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:18:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:02,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:18:02,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:18:02,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:02,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569658022] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:02,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:02,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-14 14:18:02,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112645697] [2022-12-14 14:18:02,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:02,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:18:02,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:18:02,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:02,569 INFO L87 Difference]: Start difference. First operand 21913 states and 83390 transitions. Second operand has 4 states, 3 states have (on average 1.0) 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) [2022-12-14 14:18:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:03,095 INFO L93 Difference]: Finished difference Result 43801 states and 166722 transitions. [2022-12-14 14:18:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:18:03,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) 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 [2022-12-14 14:18:03,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:03,305 INFO L225 Difference]: With dead ends: 43801 [2022-12-14 14:18:03,305 INFO L226 Difference]: Without dead ends: 43801 [2022-12-14 14:18:03,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:03,306 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 177 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:03,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 0 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:18:03,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43801 states. [2022-12-14 14:18:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43801 to 21910. [2022-12-14 14:18:04,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21910 states, 19208 states have (on average 4.3407955018742195) internal successors, (83378), 21909 states have internal predecessors, (83378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21910 states to 21910 states and 83378 transitions. [2022-12-14 14:18:04,212 INFO L78 Accepts]: Start accepts. Automaton has 21910 states and 83378 transitions. Word has length 3 [2022-12-14 14:18:04,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:04,213 INFO L495 AbstractCegarLoop]: Abstraction has 21910 states and 83378 transitions. [2022-12-14 14:18:04,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) 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) [2022-12-14 14:18:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 21910 states and 83378 transitions. [2022-12-14 14:18:04,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 14:18:04,213 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:04,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 14:18:04,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:18:04,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:04,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash -848496908, now seen corresponding path program 1 times [2022-12-14 14:18:04,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:04,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577995976] [2022-12-14 14:18:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:04,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:18:04,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:04,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577995976] [2022-12-14 14:18:04,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577995976] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:04,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:04,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:18:04,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834645530] [2022-12-14 14:18:04,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:04,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:04,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:04,517 INFO L87 Difference]: Start difference. First operand 21910 states and 83378 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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) [2022-12-14 14:18:04,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:04,889 INFO L93 Difference]: Finished difference Result 21910 states and 83375 transitions. [2022-12-14 14:18:04,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:04,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 6 [2022-12-14 14:18:04,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:05,000 INFO L225 Difference]: With dead ends: 21910 [2022-12-14 14:18:05,000 INFO L226 Difference]: Without dead ends: 21910 [2022-12-14 14:18:05,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:05,002 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:05,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:18:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21910 states. [2022-12-14 14:18:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21910 to 21910. [2022-12-14 14:18:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21910 states, 19208 states have (on average 4.34063931695127) internal successors, (83375), 21909 states have internal predecessors, (83375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21910 states to 21910 states and 83375 transitions. [2022-12-14 14:18:05,689 INFO L78 Accepts]: Start accepts. Automaton has 21910 states and 83375 transitions. Word has length 6 [2022-12-14 14:18:05,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:05,689 INFO L495 AbstractCegarLoop]: Abstraction has 21910 states and 83375 transitions. [2022-12-14 14:18:05,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2022-12-14 14:18:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 21910 states and 83375 transitions. [2022-12-14 14:18:05,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 14:18:05,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:05,690 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-12-14 14:18:05,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:18:05,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:05,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1089524168, now seen corresponding path program 2 times [2022-12-14 14:18:05,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:05,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222077015] [2022-12-14 14:18:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:05,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:18:05,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:05,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222077015] [2022-12-14 14:18:05,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222077015] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:05,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078753922] [2022-12-14 14:18:05,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:18:05,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:05,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:05,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:05,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:18:05,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 14:18:05,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:18:05,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:18:05,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 14:18:05,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:05,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078753922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:05,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:05,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-14 14:18:05,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221883513] [2022-12-14 14:18:05,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:05,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:05,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:05,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:05,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:05,886 INFO L87 Difference]: Start difference. First operand 21910 states and 83375 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:06,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:06,098 INFO L93 Difference]: Finished difference Result 21907 states and 83372 transitions. [2022-12-14 14:18:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:06,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 14:18:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:06,188 INFO L225 Difference]: With dead ends: 21907 [2022-12-14 14:18:06,188 INFO L226 Difference]: Without dead ends: 21907 [2022-12-14 14:18:06,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:06,189 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:06,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21907 states. [2022-12-14 14:18:06,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21907 to 21898. [2022-12-14 14:18:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21898 states, 19199 states have (on average 4.341580290640137) internal successors, (83354), 21897 states have internal predecessors, (83354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21898 states to 21898 states and 83354 transitions. [2022-12-14 14:18:06,684 INFO L78 Accepts]: Start accepts. Automaton has 21898 states and 83354 transitions. Word has length 6 [2022-12-14 14:18:06,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:06,684 INFO L495 AbstractCegarLoop]: Abstraction has 21898 states and 83354 transitions. [2022-12-14 14:18:06,685 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) [2022-12-14 14:18:06,685 INFO L276 IsEmpty]: Start isEmpty. Operand 21898 states and 83354 transitions. [2022-12-14 14:18:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 14:18:06,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:06,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:06,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:18:06,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:06,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:06,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1347996533, now seen corresponding path program 1 times [2022-12-14 14:18:06,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:06,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261446367] [2022-12-14 14:18:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:18:06,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:06,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261446367] [2022-12-14 14:18:06,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261446367] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:06,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648903130] [2022-12-14 14:18:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:06,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:06,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:06,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:18:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:07,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:18:07,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:18:07,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:18:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:18:07,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648903130] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:18:07,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [681530193] [2022-12-14 14:18:07,177 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) [2022-12-14 14:18:07,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:18:07,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-12-14 14:18:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331984728] [2022-12-14 14:18:07,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:18:07,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:18:07,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:18:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:07,179 INFO L87 Difference]: Start difference. First operand 21898 states and 83354 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:07,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:07,586 INFO L93 Difference]: Finished difference Result 21907 states and 83363 transitions. [2022-12-14 14:18:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:18:07,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 14:18:07,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:07,691 INFO L225 Difference]: With dead ends: 21907 [2022-12-14 14:18:07,691 INFO L226 Difference]: Without dead ends: 21907 [2022-12-14 14:18:07,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:07,692 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:07,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:18:07,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21907 states. [2022-12-14 14:18:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21907 to 21907. [2022-12-14 14:18:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21907 states, 19208 states have (on average 4.340014577259475) internal successors, (83363), 21906 states have internal predecessors, (83363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21907 states to 21907 states and 83363 transitions. [2022-12-14 14:18:08,356 INFO L78 Accepts]: Start accepts. Automaton has 21907 states and 83363 transitions. Word has length 9 [2022-12-14 14:18:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:08,356 INFO L495 AbstractCegarLoop]: Abstraction has 21907 states and 83363 transitions. [2022-12-14 14:18:08,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 21907 states and 83363 transitions. [2022-12-14 14:18:08,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 14:18:08,357 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:08,357 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:08,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:18:08,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 14:18:08,559 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:08,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:08,561 INFO L85 PathProgramCache]: Analyzing trace with hash 140257716, now seen corresponding path program 2 times [2022-12-14 14:18:08,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:08,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468517004] [2022-12-14 14:18:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:08,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 14:18:08,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:08,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468517004] [2022-12-14 14:18:08,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468517004] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:08,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616783378] [2022-12-14 14:18:08,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:18:08,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:08,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:08,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:08,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:18:08,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 14:18:08,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:18:08,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:18:08,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 14:18:08,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:08,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616783378] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:08,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:08,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-14 14:18:08,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034702441] [2022-12-14 14:18:08,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:08,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:08,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:08,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:08,885 INFO L87 Difference]: Start difference. First operand 21907 states and 83363 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-12-14 14:18:09,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:09,253 INFO L93 Difference]: Finished difference Result 19689 states and 75034 transitions. [2022-12-14 14:18:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:09,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 18 [2022-12-14 14:18:09,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:09,326 INFO L225 Difference]: With dead ends: 19689 [2022-12-14 14:18:09,326 INFO L226 Difference]: Without dead ends: 19689 [2022-12-14 14:18:09,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:09,328 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:09,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:09,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19689 states. [2022-12-14 14:18:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19689 to 19689. [2022-12-14 14:18:09,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19689 states, 17380 states have (on average 4.317261219792865) internal successors, (75034), 19688 states have internal predecessors, (75034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19689 states to 19689 states and 75034 transitions. [2022-12-14 14:18:09,785 INFO L78 Accepts]: Start accepts. Automaton has 19689 states and 75034 transitions. Word has length 18 [2022-12-14 14:18:09,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:09,786 INFO L495 AbstractCegarLoop]: Abstraction has 19689 states and 75034 transitions. [2022-12-14 14:18:09,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-12-14 14:18:09,786 INFO L276 IsEmpty]: Start isEmpty. Operand 19689 states and 75034 transitions. [2022-12-14 14:18:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 14:18:09,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:09,787 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:09,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:18:09,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:09,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:09,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:09,990 INFO L85 PathProgramCache]: Analyzing trace with hash 140257786, now seen corresponding path program 1 times [2022-12-14 14:18:09,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:09,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223056209] [2022-12-14 14:18:09,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:09,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 14:18:10,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:10,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223056209] [2022-12-14 14:18:10,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223056209] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:10,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450554220] [2022-12-14 14:18:10,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:10,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:10,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:10,146 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:10,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:18:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:10,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 14:18:10,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 14:18:10,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:18:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 14:18:10,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450554220] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:18:10,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1336076584] [2022-12-14 14:18:10,393 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) [2022-12-14 14:18:10,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:18:10,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2022-12-14 14:18:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537449560] [2022-12-14 14:18:10,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:18:10,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 14:18:10,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:10,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 14:18:10,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-14 14:18:10,395 INFO L87 Difference]: Start difference. First operand 19689 states and 75034 transitions. Second operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:10,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:10,869 INFO L93 Difference]: Finished difference Result 19692 states and 75037 transitions. [2022-12-14 14:18:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:18:10,870 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 14:18:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:10,946 INFO L225 Difference]: With dead ends: 19692 [2022-12-14 14:18:10,947 INFO L226 Difference]: Without dead ends: 19692 [2022-12-14 14:18:10,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-14 14:18:10,947 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:10,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:18:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19692 states. [2022-12-14 14:18:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19692 to 19692. [2022-12-14 14:18:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19692 states, 17383 states have (on average 4.316688718863257) internal successors, (75037), 19691 states have internal predecessors, (75037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19692 states to 19692 states and 75037 transitions. [2022-12-14 14:18:11,353 INFO L78 Accepts]: Start accepts. Automaton has 19692 states and 75037 transitions. Word has length 18 [2022-12-14 14:18:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:11,353 INFO L495 AbstractCegarLoop]: Abstraction has 19692 states and 75037 transitions. [2022-12-14 14:18:11,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 19692 states and 75037 transitions. [2022-12-14 14:18:11,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 14:18:11,353 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:11,353 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:11,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 14:18:11,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:11,555 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1429060347, now seen corresponding path program 2 times [2022-12-14 14:18:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231116555] [2022-12-14 14:18:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:11,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:11,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:11,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231116555] [2022-12-14 14:18:11,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231116555] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:11,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:11,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:18:11,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352818593] [2022-12-14 14:18:11,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:11,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:11,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:11,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:11,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:11,664 INFO L87 Difference]: Start difference. First operand 19692 states and 75037 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-12-14 14:18:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:11,876 INFO L93 Difference]: Finished difference Result 18236 states and 69680 transitions. [2022-12-14 14:18:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:11,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 21 [2022-12-14 14:18:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:11,943 INFO L225 Difference]: With dead ends: 18236 [2022-12-14 14:18:11,943 INFO L226 Difference]: Without dead ends: 18236 [2022-12-14 14:18:11,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:11,944 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:11,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:11,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18236 states. [2022-12-14 14:18:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18236 to 18236. [2022-12-14 14:18:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18236 states, 16235 states have (on average 4.291961810902372) internal successors, (69680), 18235 states have internal predecessors, (69680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18236 states to 18236 states and 69680 transitions. [2022-12-14 14:18:12,474 INFO L78 Accepts]: Start accepts. Automaton has 18236 states and 69680 transitions. Word has length 21 [2022-12-14 14:18:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:12,475 INFO L495 AbstractCegarLoop]: Abstraction has 18236 states and 69680 transitions. [2022-12-14 14:18:12,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-12-14 14:18:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 18236 states and 69680 transitions. [2022-12-14 14:18:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 14:18:12,475 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:12,475 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:12,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 14:18:12,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:12,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1429060348, now seen corresponding path program 1 times [2022-12-14 14:18:12,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:12,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251882605] [2022-12-14 14:18:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:12,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:12,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:12,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251882605] [2022-12-14 14:18:12,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251882605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:12,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:12,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:18:12,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304824150] [2022-12-14 14:18:12,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:12,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:12,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:12,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:12,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:12,552 INFO L87 Difference]: Start difference. First operand 18236 states and 69680 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-12-14 14:18:12,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:12,810 INFO L93 Difference]: Finished difference Result 16256 states and 62220 transitions. [2022-12-14 14:18:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:12,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 21 [2022-12-14 14:18:12,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:12,885 INFO L225 Difference]: With dead ends: 16256 [2022-12-14 14:18:12,885 INFO L226 Difference]: Without dead ends: 16256 [2022-12-14 14:18:12,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:12,886 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:12,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16256 states. [2022-12-14 14:18:13,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16256 to 16256. [2022-12-14 14:18:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16256 states, 14577 states have (on average 4.26836797694999) internal successors, (62220), 16255 states have internal predecessors, (62220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16256 states to 16256 states and 62220 transitions. [2022-12-14 14:18:13,354 INFO L78 Accepts]: Start accepts. Automaton has 16256 states and 62220 transitions. Word has length 21 [2022-12-14 14:18:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:13,354 INFO L495 AbstractCegarLoop]: Abstraction has 16256 states and 62220 transitions. [2022-12-14 14:18:13,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-12-14 14:18:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand 16256 states and 62220 transitions. [2022-12-14 14:18:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 14:18:13,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:13,355 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:13,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 14:18:13,355 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:13,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:13,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1429060349, now seen corresponding path program 1 times [2022-12-14 14:18:13,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:13,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517110300] [2022-12-14 14:18:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:13,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:13,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:13,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517110300] [2022-12-14 14:18:13,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517110300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:13,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:13,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:18:13,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036555208] [2022-12-14 14:18:13,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:13,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:13,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:13,474 INFO L87 Difference]: Start difference. First operand 16256 states and 62220 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-12-14 14:18:13,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:13,701 INFO L93 Difference]: Finished difference Result 14982 states and 57518 transitions. [2022-12-14 14:18:13,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:13,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 21 [2022-12-14 14:18:13,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:13,769 INFO L225 Difference]: With dead ends: 14982 [2022-12-14 14:18:13,769 INFO L226 Difference]: Without dead ends: 14982 [2022-12-14 14:18:13,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:13,770 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:13,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14982 states. [2022-12-14 14:18:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14982 to 14982. [2022-12-14 14:18:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14982 states, 13553 states have (on average 4.243931232937357) internal successors, (57518), 14981 states have internal predecessors, (57518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14982 states to 14982 states and 57518 transitions. [2022-12-14 14:18:14,191 INFO L78 Accepts]: Start accepts. Automaton has 14982 states and 57518 transitions. Word has length 21 [2022-12-14 14:18:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:14,192 INFO L495 AbstractCegarLoop]: Abstraction has 14982 states and 57518 transitions. [2022-12-14 14:18:14,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-12-14 14:18:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 14982 states and 57518 transitions. [2022-12-14 14:18:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 14:18:14,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:14,193 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:14,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 14:18:14,193 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:14,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1351195090, now seen corresponding path program 1 times [2022-12-14 14:18:14,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:14,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006152208] [2022-12-14 14:18:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:14,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:14,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:14,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006152208] [2022-12-14 14:18:14,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006152208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:14,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:14,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:18:14,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305934518] [2022-12-14 14:18:14,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:14,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:14,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:14,288 INFO L87 Difference]: Start difference. First operand 14982 states and 57518 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2022-12-14 14:18:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:14,705 INFO L93 Difference]: Finished difference Result 22772 states and 87589 transitions. [2022-12-14 14:18:14,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:14,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 22 [2022-12-14 14:18:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:14,806 INFO L225 Difference]: With dead ends: 22772 [2022-12-14 14:18:14,806 INFO L226 Difference]: Without dead ends: 22772 [2022-12-14 14:18:14,806 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 [2022-12-14 14:18:14,807 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:14,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:18:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22772 states. [2022-12-14 14:18:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22772 to 21502. [2022-12-14 14:18:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21502 states, 20073 states have (on average 4.17535993623275) internal successors, (83812), 21501 states have internal predecessors, (83812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21502 states to 21502 states and 83812 transitions. [2022-12-14 14:18:15,425 INFO L78 Accepts]: Start accepts. Automaton has 21502 states and 83812 transitions. Word has length 22 [2022-12-14 14:18:15,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:15,425 INFO L495 AbstractCegarLoop]: Abstraction has 21502 states and 83812 transitions. [2022-12-14 14:18:15,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2022-12-14 14:18:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 21502 states and 83812 transitions. [2022-12-14 14:18:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 14:18:15,426 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:15,426 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:15,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 14:18:15,426 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:15,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:15,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1062789947, now seen corresponding path program 1 times [2022-12-14 14:18:15,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:15,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788829340] [2022-12-14 14:18:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:15,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:15,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:15,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788829340] [2022-12-14 14:18:15,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788829340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:15,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:15,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:18:15,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238748163] [2022-12-14 14:18:15,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:15,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:15,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:15,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:15,509 INFO L87 Difference]: Start difference. First operand 21502 states and 83812 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:15,795 INFO L93 Difference]: Finished difference Result 19060 states and 74496 transitions. [2022-12-14 14:18:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:15,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 14:18:15,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:15,892 INFO L225 Difference]: With dead ends: 19060 [2022-12-14 14:18:15,892 INFO L226 Difference]: Without dead ends: 19060 [2022-12-14 14:18:15,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:15,893 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:15,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19060 states. [2022-12-14 14:18:16,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19060 to 19060. [2022-12-14 14:18:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19060 states, 17873 states have (on average 4.168074749622336) internal successors, (74496), 19059 states have internal predecessors, (74496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19060 states to 19060 states and 74496 transitions. [2022-12-14 14:18:16,434 INFO L78 Accepts]: Start accepts. Automaton has 19060 states and 74496 transitions. Word has length 23 [2022-12-14 14:18:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:16,434 INFO L495 AbstractCegarLoop]: Abstraction has 19060 states and 74496 transitions. [2022-12-14 14:18:16,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 19060 states and 74496 transitions. [2022-12-14 14:18:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 14:18:16,435 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:16,435 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:16,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 14:18:16,435 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1062789946, now seen corresponding path program 1 times [2022-12-14 14:18:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:16,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112828296] [2022-12-14 14:18:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:16,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:16,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:16,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112828296] [2022-12-14 14:18:16,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112828296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:16,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:16,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:18:16,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302139413] [2022-12-14 14:18:16,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:16,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:16,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:16,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:16,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:16,502 INFO L87 Difference]: Start difference. First operand 19060 states and 74496 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:16,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:16,742 INFO L93 Difference]: Finished difference Result 16750 states and 65664 transitions. [2022-12-14 14:18:16,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:16,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 14:18:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:16,815 INFO L225 Difference]: With dead ends: 16750 [2022-12-14 14:18:16,815 INFO L226 Difference]: Without dead ends: 16750 [2022-12-14 14:18:16,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:16,816 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:16,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:16,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16750 states. [2022-12-14 14:18:17,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16750 to 16750. [2022-12-14 14:18:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16750 states, 15783 states have (on average 4.160425774567573) internal successors, (65664), 16749 states have internal predecessors, (65664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16750 states to 16750 states and 65664 transitions. [2022-12-14 14:18:17,278 INFO L78 Accepts]: Start accepts. Automaton has 16750 states and 65664 transitions. Word has length 23 [2022-12-14 14:18:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:17,278 INFO L495 AbstractCegarLoop]: Abstraction has 16750 states and 65664 transitions. [2022-12-14 14:18:17,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 16750 states and 65664 transitions. [2022-12-14 14:18:17,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 14:18:17,279 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:17,279 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:17,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 14:18:17,279 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:17,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:17,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1413248890, now seen corresponding path program 1 times [2022-12-14 14:18:17,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:17,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172844547] [2022-12-14 14:18:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:17,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:17,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:17,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172844547] [2022-12-14 14:18:17,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172844547] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:17,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:17,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:18:17,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920022143] [2022-12-14 14:18:17,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:17,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:17,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:17,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:17,372 INFO L87 Difference]: Start difference. First operand 16750 states and 65664 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:17,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:17,787 INFO L93 Difference]: Finished difference Result 25452 states and 100855 transitions. [2022-12-14 14:18:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:17,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 14:18:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:17,908 INFO L225 Difference]: With dead ends: 25452 [2022-12-14 14:18:17,908 INFO L226 Difference]: Without dead ends: 25452 [2022-12-14 14:18:17,909 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 [2022-12-14 14:18:17,909 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:17,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:18:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25452 states. [2022-12-14 14:18:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25452 to 24714. [2022-12-14 14:18:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24714 states, 23747 states have (on average 4.163473280835474) internal successors, (98870), 24713 states have internal predecessors, (98870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24714 states to 24714 states and 98870 transitions. [2022-12-14 14:18:18,565 INFO L78 Accepts]: Start accepts. Automaton has 24714 states and 98870 transitions. Word has length 24 [2022-12-14 14:18:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:18,565 INFO L495 AbstractCegarLoop]: Abstraction has 24714 states and 98870 transitions. [2022-12-14 14:18:18,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 24714 states and 98870 transitions. [2022-12-14 14:18:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 14:18:18,566 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:18,566 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:18,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 14:18:18,567 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:18,567 INFO L85 PathProgramCache]: Analyzing trace with hash 918059475, now seen corresponding path program 1 times [2022-12-14 14:18:18,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:18,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975154213] [2022-12-14 14:18:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:18,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:18,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:18,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975154213] [2022-12-14 14:18:18,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975154213] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:18,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:18,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:18:18,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557067073] [2022-12-14 14:18:18,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:18,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:18,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:18,630 INFO L87 Difference]: Start difference. First operand 24714 states and 98870 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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) [2022-12-14 14:18:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:18,979 INFO L93 Difference]: Finished difference Result 29200 states and 116625 transitions. [2022-12-14 14:18:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:18,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 26 [2022-12-14 14:18:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:19,089 INFO L225 Difference]: With dead ends: 29200 [2022-12-14 14:18:19,089 INFO L226 Difference]: Without dead ends: 29200 [2022-12-14 14:18:19,089 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 [2022-12-14 14:18:19,090 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:19,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:18:19,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29200 states. [2022-12-14 14:18:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29200 to 26960. [2022-12-14 14:18:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26960 states, 25993 states have (on average 4.2319855345669986) internal successors, (110002), 26959 states have internal predecessors, (110002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26960 states to 26960 states and 110002 transitions. [2022-12-14 14:18:19,694 INFO L78 Accepts]: Start accepts. Automaton has 26960 states and 110002 transitions. Word has length 26 [2022-12-14 14:18:19,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:19,694 INFO L495 AbstractCegarLoop]: Abstraction has 26960 states and 110002 transitions. [2022-12-14 14:18:19,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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) [2022-12-14 14:18:19,695 INFO L276 IsEmpty]: Start isEmpty. Operand 26960 states and 110002 transitions. [2022-12-14 14:18:19,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 14:18:19,695 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:19,695 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:19,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 14:18:19,696 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1604923083, now seen corresponding path program 1 times [2022-12-14 14:18:19,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:19,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836604255] [2022-12-14 14:18:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:19,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:19,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:19,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836604255] [2022-12-14 14:18:19,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836604255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:19,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:19,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:18:19,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959605983] [2022-12-14 14:18:19,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:19,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:19,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:19,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:19,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:19,749 INFO L87 Difference]: Start difference. First operand 26960 states and 110002 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:19,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:19,994 INFO L93 Difference]: Finished difference Result 22468 states and 92218 transitions. [2022-12-14 14:18:19,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:19,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 14:18:19,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:20,139 INFO L225 Difference]: With dead ends: 22468 [2022-12-14 14:18:20,139 INFO L226 Difference]: Without dead ends: 22468 [2022-12-14 14:18:20,139 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 [2022-12-14 14:18:20,140 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:20,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22468 states. [2022-12-14 14:18:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22468 to 22468. [2022-12-14 14:18:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22468 states, 21743 states have (on average 4.241273053396496) internal successors, (92218), 22467 states have internal predecessors, (92218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22468 states to 22468 states and 92218 transitions. [2022-12-14 14:18:20,584 INFO L78 Accepts]: Start accepts. Automaton has 22468 states and 92218 transitions. Word has length 27 [2022-12-14 14:18:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:20,585 INFO L495 AbstractCegarLoop]: Abstraction has 22468 states and 92218 transitions. [2022-12-14 14:18:20,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 22468 states and 92218 transitions. [2022-12-14 14:18:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 14:18:20,585 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:20,586 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:20,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 14:18:20,586 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:20,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1604923135, now seen corresponding path program 1 times [2022-12-14 14:18:20,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:20,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133336435] [2022-12-14 14:18:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:20,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:20,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:20,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133336435] [2022-12-14 14:18:20,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133336435] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:20,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010942248] [2022-12-14 14:18:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:20,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:20,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:20,650 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:20,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 14:18:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:20,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:18:20,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:20,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:20,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010942248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:20,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:20,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-14 14:18:20,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63015312] [2022-12-14 14:18:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:20,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:18:20,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:18:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:20,815 INFO L87 Difference]: Start difference. First operand 22468 states and 92218 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:21,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:21,193 INFO L93 Difference]: Finished difference Result 24702 states and 96572 transitions. [2022-12-14 14:18:21,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:18:21,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 14:18:21,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:21,280 INFO L225 Difference]: With dead ends: 24702 [2022-12-14 14:18:21,280 INFO L226 Difference]: Without dead ends: 24702 [2022-12-14 14:18:21,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:21,281 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 122 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:21,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:18:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24702 states. [2022-12-14 14:18:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24702 to 20222. [2022-12-14 14:18:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20222 states, 19618 states have (on average 4.24742583341829) internal successors, (83326), 20221 states have internal predecessors, (83326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20222 states to 20222 states and 83326 transitions. [2022-12-14 14:18:21,728 INFO L78 Accepts]: Start accepts. Automaton has 20222 states and 83326 transitions. Word has length 27 [2022-12-14 14:18:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:21,728 INFO L495 AbstractCegarLoop]: Abstraction has 20222 states and 83326 transitions. [2022-12-14 14:18:21,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 20222 states and 83326 transitions. [2022-12-14 14:18:21,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 14:18:21,729 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:21,729 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:21,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 14:18:21,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 14:18:21,931 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:21,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:21,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1604923198, now seen corresponding path program 1 times [2022-12-14 14:18:21,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:21,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073708647] [2022-12-14 14:18:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:21,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 14:18:22,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:22,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073708647] [2022-12-14 14:18:22,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073708647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:22,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:18:22,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:18:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623145438] [2022-12-14 14:18:22,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:22,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:22,035 INFO L87 Difference]: Start difference. First operand 20222 states and 83326 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:22,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:22,228 INFO L93 Difference]: Finished difference Result 17450 states and 72404 transitions. [2022-12-14 14:18:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:22,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 14:18:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:22,291 INFO L225 Difference]: With dead ends: 17450 [2022-12-14 14:18:22,291 INFO L226 Difference]: Without dead ends: 17450 [2022-12-14 14:18:22,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:18:22,292 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:22,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:22,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17450 states. [2022-12-14 14:18:22,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17450 to 17450. [2022-12-14 14:18:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17450 states, 17011 states have (on average 4.256304743989183) internal successors, (72404), 17449 states have internal predecessors, (72404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:22,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17450 states to 17450 states and 72404 transitions. [2022-12-14 14:18:22,642 INFO L78 Accepts]: Start accepts. Automaton has 17450 states and 72404 transitions. Word has length 27 [2022-12-14 14:18:22,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:22,642 INFO L495 AbstractCegarLoop]: Abstraction has 17450 states and 72404 transitions. [2022-12-14 14:18:22,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:22,642 INFO L276 IsEmpty]: Start isEmpty. Operand 17450 states and 72404 transitions. [2022-12-14 14:18:22,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 14:18:22,643 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:22,643 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:22,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 14:18:22,643 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:22,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:22,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1604923130, now seen corresponding path program 1 times [2022-12-14 14:18:22,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:22,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972315449] [2022-12-14 14:18:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:22,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:22,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:22,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972315449] [2022-12-14 14:18:22,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972315449] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:22,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035046607] [2022-12-14 14:18:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:22,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:22,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:22,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:22,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 14:18:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:22,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:18:22,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 14:18:22,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:22,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035046607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:22,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:22,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-14 14:18:22,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204055031] [2022-12-14 14:18:22,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:22,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:22,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:22,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:22,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:22,926 INFO L87 Difference]: Start difference. First operand 17450 states and 72404 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:23,099 INFO L93 Difference]: Finished difference Result 14806 states and 61894 transitions. [2022-12-14 14:18:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:23,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 14:18:23,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:23,148 INFO L225 Difference]: With dead ends: 14806 [2022-12-14 14:18:23,148 INFO L226 Difference]: Without dead ends: 14806 [2022-12-14 14:18:23,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:23,149 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:23,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14806 states. [2022-12-14 14:18:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14806 to 14806. [2022-12-14 14:18:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14806 states, 14507 states have (on average 4.266492038326326) internal successors, (61894), 14805 states have internal predecessors, (61894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14806 states to 14806 states and 61894 transitions. [2022-12-14 14:18:23,442 INFO L78 Accepts]: Start accepts. Automaton has 14806 states and 61894 transitions. Word has length 27 [2022-12-14 14:18:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:23,442 INFO L495 AbstractCegarLoop]: Abstraction has 14806 states and 61894 transitions. [2022-12-14 14:18:23,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 14806 states and 61894 transitions. [2022-12-14 14:18:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 14:18:23,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:23,443 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:23,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 14:18:23,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:23,645 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:23,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:23,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1604923129, now seen corresponding path program 1 times [2022-12-14 14:18:23,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:23,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283992180] [2022-12-14 14:18:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:23,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:23,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:23,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283992180] [2022-12-14 14:18:23,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283992180] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:23,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057686332] [2022-12-14 14:18:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:23,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:23,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:23,723 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:23,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 14:18:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:23,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:18:23,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 14:18:23,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:23,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057686332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:23,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:23,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-14 14:18:23,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970433236] [2022-12-14 14:18:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:23,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:23,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:23,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:23,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:23,904 INFO L87 Difference]: Start difference. First operand 14806 states and 61894 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:24,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:24,031 INFO L93 Difference]: Finished difference Result 12310 states and 51994 transitions. [2022-12-14 14:18:24,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:24,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 14:18:24,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:24,071 INFO L225 Difference]: With dead ends: 12310 [2022-12-14 14:18:24,071 INFO L226 Difference]: Without dead ends: 12310 [2022-12-14 14:18:24,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:24,071 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:24,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:24,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2022-12-14 14:18:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 12310. [2022-12-14 14:18:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12310 states, 12131 states have (on average 4.286044019454291) internal successors, (51994), 12309 states have internal predecessors, (51994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12310 states to 12310 states and 51994 transitions. [2022-12-14 14:18:24,314 INFO L78 Accepts]: Start accepts. Automaton has 12310 states and 51994 transitions. Word has length 27 [2022-12-14 14:18:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:24,315 INFO L495 AbstractCegarLoop]: Abstraction has 12310 states and 51994 transitions. [2022-12-14 14:18:24,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:24,315 INFO L276 IsEmpty]: Start isEmpty. Operand 12310 states and 51994 transitions. [2022-12-14 14:18:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 14:18:24,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:24,316 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:24,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 14:18:24,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:24,517 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:24,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:24,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1604923126, now seen corresponding path program 1 times [2022-12-14 14:18:24,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:24,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360074539] [2022-12-14 14:18:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:24,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:24,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:24,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360074539] [2022-12-14 14:18:24,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360074539] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:24,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878850714] [2022-12-14 14:18:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:24,636 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:24,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 14:18:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:24,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:18:24,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:24,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:18:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:24,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878850714] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:18:24,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [876942692] [2022-12-14 14:18:24,848 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) [2022-12-14 14:18:24,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:18:24,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 14:18:24,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874988774] [2022-12-14 14:18:24,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:18:24,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:18:24,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:24,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:18:24,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:18:24,849 INFO L87 Difference]: Start difference. First operand 12310 states and 51994 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:25,316 INFO L93 Difference]: Finished difference Result 26636 states and 106982 transitions. [2022-12-14 14:18:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:18:25,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 14:18:25,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:25,412 INFO L225 Difference]: With dead ends: 26636 [2022-12-14 14:18:25,412 INFO L226 Difference]: Without dead ends: 26636 [2022-12-14 14:18:25,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:18:25,412 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 448 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:25,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 0 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:18:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26636 states. [2022-12-14 14:18:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26636 to 18460. [2022-12-14 14:18:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18460 states, 18281 states have (on average 4.519337016574585) internal successors, (82618), 18459 states have internal predecessors, (82618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18460 states to 18460 states and 82618 transitions. [2022-12-14 14:18:25,858 INFO L78 Accepts]: Start accepts. Automaton has 18460 states and 82618 transitions. Word has length 27 [2022-12-14 14:18:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:25,858 INFO L495 AbstractCegarLoop]: Abstraction has 18460 states and 82618 transitions. [2022-12-14 14:18:25,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 18460 states and 82618 transitions. [2022-12-14 14:18:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 14:18:25,860 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:25,860 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:25,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 14:18:26,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 14:18:26,061 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash -683392472, now seen corresponding path program 2 times [2022-12-14 14:18:26,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:26,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711836139] [2022-12-14 14:18:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:26,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:26,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:26,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711836139] [2022-12-14 14:18:26,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711836139] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:26,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580671051] [2022-12-14 14:18:26,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:18:26,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:26,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:26,237 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:26,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 14:18:26,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 14:18:26,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:18:26,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:18:26,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 14:18:26,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:26,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580671051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:26,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:26,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-14 14:18:26,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938187093] [2022-12-14 14:18:26,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:26,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:26,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:26,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:26,423 INFO L87 Difference]: Start difference. First operand 18460 states and 82618 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:26,571 INFO L93 Difference]: Finished difference Result 15896 states and 72210 transitions. [2022-12-14 14:18:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:26,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-14 14:18:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:26,630 INFO L225 Difference]: With dead ends: 15896 [2022-12-14 14:18:26,630 INFO L226 Difference]: Without dead ends: 15858 [2022-12-14 14:18:26,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:26,631 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:26,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15858 states. [2022-12-14 14:18:26,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15858 to 7938. [2022-12-14 14:18:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7938 states, 7858 states have (on average 4.1407482820056) internal successors, (32538), 7937 states have internal predecessors, (32538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7938 states to 7938 states and 32538 transitions. [2022-12-14 14:18:26,858 INFO L78 Accepts]: Start accepts. Automaton has 7938 states and 32538 transitions. Word has length 30 [2022-12-14 14:18:26,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:26,858 INFO L495 AbstractCegarLoop]: Abstraction has 7938 states and 32538 transitions. [2022-12-14 14:18:26,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7938 states and 32538 transitions. [2022-12-14 14:18:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 14:18:26,860 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:26,860 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:26,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 14:18:27,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 14:18:27,061 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:27,062 INFO L85 PathProgramCache]: Analyzing trace with hash -928342676, now seen corresponding path program 1 times [2022-12-14 14:18:27,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:27,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262238487] [2022-12-14 14:18:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:27,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:27,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:27,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262238487] [2022-12-14 14:18:27,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262238487] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:27,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902554824] [2022-12-14 14:18:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:27,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:27,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:27,211 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:27,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 14:18:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:27,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:18:27,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:27,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:18:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:27,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902554824] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:18:27,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [435039637] [2022-12-14 14:18:27,454 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java: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) [2022-12-14 14:18:27,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:18:27,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 14:18:27,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60751752] [2022-12-14 14:18:27,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:18:27,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:18:27,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:27,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:18:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:18:27,455 INFO L87 Difference]: Start difference. First operand 7938 states and 32538 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 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) [2022-12-14 14:18:27,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:27,898 INFO L93 Difference]: Finished difference Result 14326 states and 59624 transitions. [2022-12-14 14:18:27,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:18:27,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 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 30 [2022-12-14 14:18:27,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:27,945 INFO L225 Difference]: With dead ends: 14326 [2022-12-14 14:18:27,945 INFO L226 Difference]: Without dead ends: 14326 [2022-12-14 14:18:27,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:18:27,946 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 439 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:27,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 0 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:18:27,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14326 states. [2022-12-14 14:18:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14326 to 12582. [2022-12-14 14:18:28,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12582 states, 12529 states have (on average 4.3167052438343045) internal successors, (54084), 12581 states have internal predecessors, (54084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:28,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12582 states to 12582 states and 54084 transitions. [2022-12-14 14:18:28,211 INFO L78 Accepts]: Start accepts. Automaton has 12582 states and 54084 transitions. Word has length 30 [2022-12-14 14:18:28,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:28,211 INFO L495 AbstractCegarLoop]: Abstraction has 12582 states and 54084 transitions. [2022-12-14 14:18:28,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 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) [2022-12-14 14:18:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 12582 states and 54084 transitions. [2022-12-14 14:18:28,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 14:18:28,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:28,214 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:28,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 14:18:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:28,415 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1256635877, now seen corresponding path program 1 times [2022-12-14 14:18:28,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:28,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292671659] [2022-12-14 14:18:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:28,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:28,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:28,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292671659] [2022-12-14 14:18:28,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292671659] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:28,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336958573] [2022-12-14 14:18:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:28,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:28,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:28,521 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:28,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 14:18:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:28,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:18:28,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:28,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:18:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:28,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336958573] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:18:28,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [468166501] [2022-12-14 14:18:28,790 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) [2022-12-14 14:18:28,790 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:18:28,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 14:18:28,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374339298] [2022-12-14 14:18:28,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:18:28,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:18:28,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:28,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:18:28,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:18:28,792 INFO L87 Difference]: Start difference. First operand 12582 states and 54084 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:29,340 INFO L93 Difference]: Finished difference Result 21886 states and 96738 transitions. [2022-12-14 14:18:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:18:29,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-12-14 14:18:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:29,417 INFO L225 Difference]: With dead ends: 21886 [2022-12-14 14:18:29,418 INFO L226 Difference]: Without dead ends: 21886 [2022-12-14 14:18:29,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:18:29,418 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:29,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:18:29,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21886 states. [2022-12-14 14:18:29,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21886 to 20382. [2022-12-14 14:18:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20382 states, 20347 states have (on average 4.5383594633115445) internal successors, (92342), 20381 states have internal predecessors, (92342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20382 states to 20382 states and 92342 transitions. [2022-12-14 14:18:29,913 INFO L78 Accepts]: Start accepts. Automaton has 20382 states and 92342 transitions. Word has length 31 [2022-12-14 14:18:29,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:29,914 INFO L495 AbstractCegarLoop]: Abstraction has 20382 states and 92342 transitions. [2022-12-14 14:18:29,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 20382 states and 92342 transitions. [2022-12-14 14:18:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 14:18:29,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:29,917 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:29,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 14:18:30,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-14 14:18:30,117 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:30,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:30,118 INFO L85 PathProgramCache]: Analyzing trace with hash -741171091, now seen corresponding path program 1 times [2022-12-14 14:18:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:30,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139592108] [2022-12-14 14:18:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:30,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:30,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:30,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139592108] [2022-12-14 14:18:30,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139592108] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:30,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592771731] [2022-12-14 14:18:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:30,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:30,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:30,172 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:30,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 14:18:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:30,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:18:30,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:30,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:30,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592771731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:30,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:30,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-14 14:18:30,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836913429] [2022-12-14 14:18:30,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:30,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:18:30,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:30,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:18:30,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:30,372 INFO L87 Difference]: Start difference. First operand 20382 states and 92342 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:30,634 INFO L93 Difference]: Finished difference Result 19964 states and 87508 transitions. [2022-12-14 14:18:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:18:30,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-12-14 14:18:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:30,757 INFO L225 Difference]: With dead ends: 19964 [2022-12-14 14:18:30,758 INFO L226 Difference]: Without dead ends: 19964 [2022-12-14 14:18:30,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:30,758 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:30,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:18:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19964 states. [2022-12-14 14:18:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19964 to 19212. [2022-12-14 14:18:31,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19212 states, 19195 states have (on average 4.44438655899974) internal successors, (85310), 19211 states have internal predecessors, (85310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:31,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19212 states to 19212 states and 85310 transitions. [2022-12-14 14:18:31,176 INFO L78 Accepts]: Start accepts. Automaton has 19212 states and 85310 transitions. Word has length 33 [2022-12-14 14:18:31,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:31,176 INFO L495 AbstractCegarLoop]: Abstraction has 19212 states and 85310 transitions. [2022-12-14 14:18:31,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:31,176 INFO L276 IsEmpty]: Start isEmpty. Operand 19212 states and 85310 transitions. [2022-12-14 14:18:31,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 14:18:31,178 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:31,178 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:31,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 14:18:31,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 14:18:31,380 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash 137297981, now seen corresponding path program 1 times [2022-12-14 14:18:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:31,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758473636] [2022-12-14 14:18:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:31,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:31,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:31,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758473636] [2022-12-14 14:18:31,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758473636] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:31,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377184252] [2022-12-14 14:18:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:31,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:31,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:31,485 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:31,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 14:18:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:31,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:18:31,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:31,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:31,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377184252] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:31,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:31,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-14 14:18:31,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865157846] [2022-12-14 14:18:31,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:31,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:18:31,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:31,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:18:31,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:31,685 INFO L87 Difference]: Start difference. First operand 19212 states and 85310 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:31,950 INFO L93 Difference]: Finished difference Result 19378 states and 82559 transitions. [2022-12-14 14:18:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:18:31,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 14:18:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:32,009 INFO L225 Difference]: With dead ends: 19378 [2022-12-14 14:18:32,009 INFO L226 Difference]: Without dead ends: 19378 [2022-12-14 14:18:32,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:18:32,010 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:32,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:18:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19378 states. [2022-12-14 14:18:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19378 to 18030. [2022-12-14 14:18:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18030 states, 18022 states have (on average 4.335978248807014) internal successors, (78143), 18029 states have internal predecessors, (78143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18030 states to 18030 states and 78143 transitions. [2022-12-14 14:18:32,412 INFO L78 Accepts]: Start accepts. Automaton has 18030 states and 78143 transitions. Word has length 34 [2022-12-14 14:18:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:32,413 INFO L495 AbstractCegarLoop]: Abstraction has 18030 states and 78143 transitions. [2022-12-14 14:18:32,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 18030 states and 78143 transitions. [2022-12-14 14:18:32,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 14:18:32,431 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:32,431 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:32,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-14 14:18:32,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-14 14:18:32,632 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1534288186, now seen corresponding path program 2 times [2022-12-14 14:18:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:32,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677455459] [2022-12-14 14:18:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:32,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:32,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:32,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677455459] [2022-12-14 14:18:32,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677455459] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:32,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191247040] [2022-12-14 14:18:32,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:18:32,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:32,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:32,991 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:32,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 14:18:33,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 14:18:33,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:18:33,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:18:33,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-14 14:18:33,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:33,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191247040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:33,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:33,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-14 14:18:33,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353885236] [2022-12-14 14:18:33,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:33,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:33,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:33,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:33,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:33,246 INFO L87 Difference]: Start difference. First operand 18030 states and 78143 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 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) [2022-12-14 14:18:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:33,412 INFO L93 Difference]: Finished difference Result 17278 states and 75142 transitions. [2022-12-14 14:18:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:33,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 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 52 [2022-12-14 14:18:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:33,469 INFO L225 Difference]: With dead ends: 17278 [2022-12-14 14:18:33,470 INFO L226 Difference]: Without dead ends: 17278 [2022-12-14 14:18:33,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:33,470 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:33,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:33,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17278 states. [2022-12-14 14:18:33,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17278 to 17278. [2022-12-14 14:18:33,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17278 states, 17275 states have (on average 4.349753979739508) internal successors, (75142), 17277 states have internal predecessors, (75142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:33,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17278 states to 17278 states and 75142 transitions. [2022-12-14 14:18:33,816 INFO L78 Accepts]: Start accepts. Automaton has 17278 states and 75142 transitions. Word has length 52 [2022-12-14 14:18:33,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:33,817 INFO L495 AbstractCegarLoop]: Abstraction has 17278 states and 75142 transitions. [2022-12-14 14:18:33,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 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) [2022-12-14 14:18:33,817 INFO L276 IsEmpty]: Start isEmpty. Operand 17278 states and 75142 transitions. [2022-12-14 14:18:33,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 14:18:33,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:18:33,831 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:33,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 14:18:34,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 14:18:34,032 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-14 14:18:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:18:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1534288190, now seen corresponding path program 1 times [2022-12-14 14:18:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:18:34,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188177681] [2022-12-14 14:18:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:18:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:18:34,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:18:34,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188177681] [2022-12-14 14:18:34,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188177681] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:18:34,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233544313] [2022-12-14 14:18:34,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:18:34,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:18:34,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:18:34,264 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:18:34,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 14:18:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:18:34,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:18:34,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:18:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-14 14:18:34,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:18:34,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233544313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:34,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:18:34,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-14 14:18:34,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778867048] [2022-12-14 14:18:34,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:34,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:18:34,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:34,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:18:34,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:34,550 INFO L87 Difference]: Start difference. First operand 17278 states and 75142 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 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) [2022-12-14 14:18:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:18:34,701 INFO L93 Difference]: Finished difference Result 16542 states and 72199 transitions. [2022-12-14 14:18:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:18:34,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 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 52 [2022-12-14 14:18:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:18:34,702 INFO L225 Difference]: With dead ends: 16542 [2022-12-14 14:18:34,702 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 14:18:34,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:18:34,703 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:18:34,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:18:34,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 14:18:34,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 14:18:34,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:18:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 14:18:34,703 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2022-12-14 14:18:34,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:18:34,703 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 14:18:34,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 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) [2022-12-14 14:18:34,704 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 14:18:34,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 14:18:34,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (116 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (115 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (114 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (113 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (112 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (111 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (110 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (109 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (108 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (107 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (106 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (105 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (104 of 117 remaining) [2022-12-14 14:18:34,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (103 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (102 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (101 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (100 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (99 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (98 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (97 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (96 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (95 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (94 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (93 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (92 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (91 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (90 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (89 of 117 remaining) [2022-12-14 14:18:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (88 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (87 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (86 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (85 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (84 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (83 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (82 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (81 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (80 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 117 remaining) [2022-12-14 14:18:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (56 of 117 remaining) [2022-12-14 14:18:34,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (55 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 117 remaining) [2022-12-14 14:18:34,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 117 remaining) [2022-12-14 14:18:34,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 117 remaining) [2022-12-14 14:18:34,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 117 remaining) [2022-12-14 14:18:34,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 117 remaining) [2022-12-14 14:18:34,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 117 remaining) [2022-12-14 14:18:34,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 117 remaining) [2022-12-14 14:18:34,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 117 remaining) [2022-12-14 14:18:34,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 117 remaining) [2022-12-14 14:18:34,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 117 remaining) [2022-12-14 14:18:34,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 117 remaining) [2022-12-14 14:18:34,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 14:18:34,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 14:18:34,919 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:18:34,933 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 14:18:34,933 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:18:34,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:18:34 BasicIcfg [2022-12-14 14:18:34,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:18:34,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:18:34,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:18:34,941 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:18:34,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:17:07" (3/4) ... [2022-12-14 14:18:34,949 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 14:18:34,957 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-14 14:18:34,958 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-14 14:18:34,958 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-14 14:18:34,963 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-12-14 14:18:34,963 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 14:18:34,964 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 14:18:34,964 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 14:18:34,993 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 14:18:34,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:18:34,994 INFO L158 Benchmark]: Toolchain (without parser) took 88816.69ms. Allocated memory was 125.8MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 86.2MB in the beginning and 4.6GB in the end (delta: -4.5GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2022-12-14 14:18:34,994 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory was 97.8MB in the beginning and 97.7MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:18:34,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.52ms. Allocated memory is still 125.8MB. Free memory was 85.8MB in the beginning and 71.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 14:18:34,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.47ms. Allocated memory is still 125.8MB. Free memory was 71.1MB in the beginning and 66.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 14:18:34,994 INFO L158 Benchmark]: Boogie Preprocessor took 35.79ms. Allocated memory is still 125.8MB. Free memory was 66.9MB in the beginning and 63.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 14:18:34,995 INFO L158 Benchmark]: RCFGBuilder took 875.78ms. Allocated memory is still 125.8MB. Free memory was 63.2MB in the beginning and 48.7MB in the end (delta: 14.5MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2022-12-14 14:18:34,995 INFO L158 Benchmark]: TraceAbstraction took 87584.86ms. Allocated memory was 125.8MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 47.5MB in the beginning and 4.6GB in the end (delta: -4.6GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2022-12-14 14:18:34,995 INFO L158 Benchmark]: Witness Printer took 52.75ms. Allocated memory is still 6.3GB. Free memory was 4.6GB in the beginning and 4.6GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 14:18:34,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory was 97.8MB in the beginning and 97.7MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.52ms. Allocated memory is still 125.8MB. Free memory was 85.8MB in the beginning and 71.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.47ms. Allocated memory is still 125.8MB. Free memory was 71.1MB in the beginning and 66.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.79ms. Allocated memory is still 125.8MB. Free memory was 66.9MB in the beginning and 63.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 875.78ms. Allocated memory is still 125.8MB. Free memory was 63.2MB in the beginning and 48.7MB in the end (delta: 14.5MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * TraceAbstraction took 87584.86ms. Allocated memory was 125.8MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 47.5MB in the beginning and 4.6GB in the end (delta: -4.6GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 52.75ms. Allocated memory is still 6.3GB. Free memory was 4.6GB in the beginning and 4.6GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 47.1s, 889 PlacesBefore, 114 PlacesAfterwards, 970 TransitionsBefore, 119 TransitionsAfterwards, 354078 CoEnabledTransitionPairs, 9 FixpointIterations, 224 TrivialSequentialCompositions, 748 ConcurrentSequentialCompositions, 33 TrivialYvCompositions, 213 ConcurrentYvCompositions, 76 ChoiceCompositions, 1294 TotalNumberOfCompositions, 353719 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 339233, independent: 338932, independent conditional: 0, independent unconditional: 338932, dependent: 301, dependent conditional: 0, dependent unconditional: 301, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 260023, independent: 259954, independent conditional: 0, independent unconditional: 259954, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 260023, independent: 259954, independent conditional: 0, independent unconditional: 259954, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 69, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 167, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 339233, independent: 78978, independent conditional: 0, independent unconditional: 78978, dependent: 232, dependent conditional: 0, dependent unconditional: 232, unknown: 260023, unknown conditional: 0, unknown unconditional: 260023] , Statistics on independence cache: Total cache size (in pairs): 2011, Positive cache size: 1978, Positive conditional cache size: 0, Positive unconditional cache size: 1978, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 1519 locations, 117 error locations. Started 1 CEGAR loops. OverallTime: 87.3s, OverallIterations: 29, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 48.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3318 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3318 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 209 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6038 IncrementalHoareTripleChecker+Invalid, 6247 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 209 mSolverCounterUnsat, 0 mSDtfsCounter, 6038 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 608 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42329occurred in iteration=0, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.6s AutomataMinimizationTime, 29 MinimizatonAttempts, 161527 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1097 NumberOfCodeBlocks, 1019 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1163 ConstructedInterpolants, 0 QuantifiedInterpolants, 2689 SizeOfPredicates, 10 NumberOfNonLiveVariables, 5366 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 52 InterpolantComputations, 23 PerfectInterpolantSequences, 1817/1996 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 60 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 14:18:35,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef55f98-6448-4782-a20a-5f61133f4fa8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE