./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW --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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- 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-4e7fbc6 [2022-11-23 14:41:22,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:41:22,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:41:22,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:41:22,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:41:22,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:41:22,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:41:22,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:41:22,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:41:22,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:41:22,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:41:22,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:41:22,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:41:22,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:41:22,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:41:22,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:41:22,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:41:22,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:41:22,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:41:22,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:41:22,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:41:22,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:41:22,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:41:22,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:41:22,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:41:22,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:41:22,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:41:22,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:41:22,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:41:22,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:41:22,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:41:22,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:41:22,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:41:22,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:41:22,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:41:22,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:41:22,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:41:22,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:41:22,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:41:22,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:41:22,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:41:22,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 14:41:22,165 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:41:22,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:41:22,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:41:22,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:41:22,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:41:22,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:41:22,171 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:41:22,171 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:41:22,171 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:41:22,171 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:41:22,173 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:41:22,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:41:22,173 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:41:22,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:41:22,174 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:41:22,174 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:41:22,174 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:41:22,174 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:41:22,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:41:22,176 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:41:22,176 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:41:22,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:41:22,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:41:22,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:41:22,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:41:22,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:41:22,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:41:22,179 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:41:22,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:41:22,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:41:22,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:41:22,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:41:22,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:41:22,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:41:22,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:41:22,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:41:22,181 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:41:22,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:41:22,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:41:22,183 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:41:22,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:41:22,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:41:22,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:41:22,184 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_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2022-11-23 14:41:22,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:41:22,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:41:22,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:41:22,540 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:41:22,540 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:41:22,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-23 14:41:25,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:41:25,821 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:41:25,833 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-23 14:41:25,857 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/data/1ab3cc518/661d16bd91da40afbfb018fe3401d06b/FLAGaf89f47be [2022-11-23 14:41:25,879 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/data/1ab3cc518/661d16bd91da40afbfb018fe3401d06b [2022-11-23 14:41:25,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:41:25,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:41:25,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:41:25,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:41:25,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:41:25,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:25" (1/1) ... [2022-11-23 14:41:25,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7681736a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:25, skipping insertion in model container [2022-11-23 14:41:25,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:25" (1/1) ... [2022-11-23 14:41:25,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:41:25,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:41:26,451 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_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-23 14:41:26,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:41:26,485 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:41:26,519 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_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-23 14:41:26,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:41:26,595 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:41:26,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26 WrapperNode [2022-11-23 14:41:26,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:41:26,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:41:26,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:41:26,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:41:26,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,677 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2022-11-23 14:41:26,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:41:26,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:41:26,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:41:26,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:41:26,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,734 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:41:26,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:41:26,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:41:26,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:41:26,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (1/1) ... [2022-11-23 14:41:26,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:41:26,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:41:26,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:41:26,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:41:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:41:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:41:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:41:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:41:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 14:41:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:41:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 14:41:26,833 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 14:41:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:41:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:41:26,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:41:26,835 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 14:41:27,000 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:41:27,003 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:41:27,334 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:41:27,343 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:41:27,343 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-23 14:41:27,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:27 BoogieIcfgContainer [2022-11-23 14:41:27,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:41:27,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:41:27,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:41:27,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:41:27,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:41:25" (1/3) ... [2022-11-23 14:41:27,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f7a526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:27, skipping insertion in model container [2022-11-23 14:41:27,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26" (2/3) ... [2022-11-23 14:41:27,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f7a526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:27, skipping insertion in model container [2022-11-23 14:41:27,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:27" (3/3) ... [2022-11-23 14:41:27,355 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2022-11-23 14:41:27,365 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 14:41:27,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:41:27,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-23 14:41:27,376 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 14:41:27,440 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 14:41:27,480 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:41:27,497 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 141 transitions, 290 flow [2022-11-23 14:41:27,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 141 transitions, 290 flow [2022-11-23 14:41:27,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 141 transitions, 290 flow [2022-11-23 14:41:27,610 INFO L130 PetriNetUnfolder]: 23/185 cut-off events. [2022-11-23 14:41:27,610 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 14:41:27,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 23/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 422 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2022-11-23 14:41:27,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 3888 [2022-11-23 14:41:32,584 INFO L134 LiptonReduction]: Checked pairs total: 5856 [2022-11-23 14:41:32,584 INFO L136 LiptonReduction]: Total number of compositions: 144 [2022-11-23 14:41:32,593 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 40 transitions, 88 flow [2022-11-23 14:41:32,620 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 194 states, 167 states have (on average 2.8323353293413174) internal successors, (473), 193 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:32,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:41:32,647 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;@3667d5bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:41:32,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-23 14:41:32,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 167 states have (on average 2.8323353293413174) internal successors, (473), 193 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:41:32,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:32,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:41:32,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 14:41:32,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash 17125857, now seen corresponding path program 1 times [2022-11-23 14:41:32,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:32,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036773712] [2022-11-23 14:41:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:32,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:32,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:32,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036773712] [2022-11-23 14:41:32,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036773712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:32,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:32,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:41:32,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864266630] [2022-11-23 14:41:32,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:32,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:32,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:33,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:33,005 INFO L87 Difference]: Start difference. First operand has 194 states, 167 states have (on average 2.8323353293413174) internal successors, (473), 193 states have internal predecessors, (473), 0 states have call successors, (0), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:33,135 INFO L93 Difference]: Finished difference Result 162 states and 305 transitions. [2022-11-23 14:41:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-23 14:41:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:33,154 INFO L225 Difference]: With dead ends: 162 [2022-11-23 14:41:33,154 INFO L226 Difference]: Without dead ends: 156 [2022-11-23 14:41:33,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:33,163 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:33,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:41:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-23 14:41:33,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-11-23 14:41:33,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 141 states have (on average 2.0921985815602837) internal successors, (295), 155 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 295 transitions. [2022-11-23 14:41:33,243 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 295 transitions. Word has length 4 [2022-11-23 14:41:33,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:33,244 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 295 transitions. [2022-11-23 14:41:33,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:33,245 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 295 transitions. [2022-11-23 14:41:33,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:41:33,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:33,246 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 14:41:33,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:41:33,246 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 14:41:33,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:33,247 INFO L85 PathProgramCache]: Analyzing trace with hash -721892883, now seen corresponding path program 1 times [2022-11-23 14:41:33,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:33,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254687704] [2022-11-23 14:41:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:33,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:41:33,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:41:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:41:33,327 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:41:33,328 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:41:33,330 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-23 14:41:33,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-23 14:41:33,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-23 14:41:33,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-23 14:41:33,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-23 14:41:33,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-23 14:41:33,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-23 14:41:33,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-23 14:41:33,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-23 14:41:33,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-23 14:41:33,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-23 14:41:33,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-23 14:41:33,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-23 14:41:33,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:41:33,339 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 14:41:33,341 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 14:41:33,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 14:41:33,364 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 14:41:33,384 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:41:33,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 179 transitions, 376 flow [2022-11-23 14:41:33,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 179 transitions, 376 flow [2022-11-23 14:41:33,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 179 transitions, 376 flow [2022-11-23 14:41:33,442 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2022-11-23 14:41:33,442 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 14:41:33,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 888 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2022-11-23 14:41:33,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 11736 [2022-11-23 14:41:38,431 INFO L134 LiptonReduction]: Checked pairs total: 25580 [2022-11-23 14:41:38,431 INFO L136 LiptonReduction]: Total number of compositions: 166 [2022-11-23 14:41:38,432 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 67 transitions, 152 flow [2022-11-23 14:41:38,567 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3981 states, 3814 states have (on average 3.7949659150498163) internal successors, (14474), 3980 states have internal predecessors, (14474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:38,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:41:38,569 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;@3667d5bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:41:38,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-23 14:41:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 3981 states, 3814 states have (on average 3.7949659150498163) internal successors, (14474), 3980 states have internal predecessors, (14474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:38,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:41:38,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:38,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:41:38,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:41:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 896160602, now seen corresponding path program 1 times [2022-11-23 14:41:38,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:38,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145415356] [2022-11-23 14:41:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:38,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:38,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:38,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145415356] [2022-11-23 14:41:38,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145415356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:38,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:38,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:41:38,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833991731] [2022-11-23 14:41:38,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:38,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:38,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:38,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:38,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:38,671 INFO L87 Difference]: Start difference. First operand has 3981 states, 3814 states have (on average 3.7949659150498163) internal successors, (14474), 3980 states have internal predecessors, (14474), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:38,874 INFO L93 Difference]: Finished difference Result 3945 states and 11028 transitions. [2022-11-23 14:41:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:38,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 14:41:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:38,903 INFO L225 Difference]: With dead ends: 3945 [2022-11-23 14:41:38,903 INFO L226 Difference]: Without dead ends: 3919 [2022-11-23 14:41:38,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:38,905 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:38,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 10 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:41:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-11-23 14:41:39,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3919. [2022-11-23 14:41:39,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3766 states have (on average 2.9107806691449816) internal successors, (10962), 3918 states have internal predecessors, (10962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 10962 transitions. [2022-11-23 14:41:39,065 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 10962 transitions. Word has length 5 [2022-11-23 14:41:39,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:39,066 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 10962 transitions. [2022-11-23 14:41:39,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 10962 transitions. [2022-11-23 14:41:39,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:41:39,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:39,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:39,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:41:39,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:41:39,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:39,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2071205834, now seen corresponding path program 1 times [2022-11-23 14:41:39,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:39,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054746055] [2022-11-23 14:41:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:39,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:39,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:39,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054746055] [2022-11-23 14:41:39,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054746055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:39,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:39,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:41:39,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571211211] [2022-11-23 14:41:39,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:39,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:39,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:39,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:39,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:39,142 INFO L87 Difference]: Start difference. First operand 3919 states and 10962 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:39,405 INFO L93 Difference]: Finished difference Result 4824 states and 12505 transitions. [2022-11-23 14:41:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:39,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 14:41:39,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:39,436 INFO L225 Difference]: With dead ends: 4824 [2022-11-23 14:41:39,436 INFO L226 Difference]: Without dead ends: 4800 [2022-11-23 14:41:39,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:39,438 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:39,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 11 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:41:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4800 states. [2022-11-23 14:41:39,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4800 to 4322. [2022-11-23 14:41:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4189 states have (on average 2.789209835282884) internal successors, (11684), 4321 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 11684 transitions. [2022-11-23 14:41:39,612 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 11684 transitions. Word has length 7 [2022-11-23 14:41:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:39,613 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 11684 transitions. [2022-11-23 14:41:39,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 11684 transitions. [2022-11-23 14:41:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:41:39,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:39,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 14:41:39,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:41:39,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:41:39,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:39,615 INFO L85 PathProgramCache]: Analyzing trace with hash 144377928, now seen corresponding path program 1 times [2022-11-23 14:41:39,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:39,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454777574] [2022-11-23 14:41:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:39,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:41:39,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:39,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454777574] [2022-11-23 14:41:39,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454777574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:39,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:39,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:41:39,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106538354] [2022-11-23 14:41:39,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:39,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:39,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:39,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:39,663 INFO L87 Difference]: Start difference. First operand 4322 states and 11684 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:39,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:39,805 INFO L93 Difference]: Finished difference Result 4090 states and 11020 transitions. [2022-11-23 14:41:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:39,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 9 [2022-11-23 14:41:39,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:39,829 INFO L225 Difference]: With dead ends: 4090 [2022-11-23 14:41:39,829 INFO L226 Difference]: Without dead ends: 4090 [2022-11-23 14:41:39,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:39,830 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8 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 [2022-11-23 14:41:39,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 8 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:41:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2022-11-23 14:41:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 4090. [2022-11-23 14:41:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 3978 states have (on average 2.7702362996480643) internal successors, (11020), 4089 states have internal predecessors, (11020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 11020 transitions. [2022-11-23 14:41:39,999 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 11020 transitions. Word has length 9 [2022-11-23 14:41:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:40,000 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 11020 transitions. [2022-11-23 14:41:40,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:40,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 11020 transitions. [2022-11-23 14:41:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:41:40,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:40,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 14:41:40,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:41:40,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:41:40,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:40,003 INFO L85 PathProgramCache]: Analyzing trace with hash 144377882, now seen corresponding path program 1 times [2022-11-23 14:41:40,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:40,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539381611] [2022-11-23 14:41:40,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:40,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:40,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:40,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:40,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539381611] [2022-11-23 14:41:40,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539381611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:41:40,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031787859] [2022-11-23 14:41:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:40,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:41:40,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:41:40,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:41:40,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:41:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:40,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:41:40,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:40,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:40,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031787859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:40,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:41:40,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-23 14:41:40,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956785042] [2022-11-23 14:41:40,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:40,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:40,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:40,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:40,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:41:40,215 INFO L87 Difference]: Start difference. First operand 4090 states and 11020 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:40,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:40,332 INFO L93 Difference]: Finished difference Result 3858 states and 10356 transitions. [2022-11-23 14:41:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:41:40,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 9 [2022-11-23 14:41:40,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:40,357 INFO L225 Difference]: With dead ends: 3858 [2022-11-23 14:41:40,358 INFO L226 Difference]: Without dead ends: 3858 [2022-11-23 14:41:40,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:41:40,359 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 59 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:40,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 9 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:41:40,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2022-11-23 14:41:40,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3858. [2022-11-23 14:41:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3767 states have (on average 2.7491372444916378) internal successors, (10356), 3857 states have internal predecessors, (10356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 10356 transitions. [2022-11-23 14:41:40,540 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 10356 transitions. Word has length 9 [2022-11-23 14:41:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:40,540 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 10356 transitions. [2022-11-23 14:41:40,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 10356 transitions. [2022-11-23 14:41:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:41:40,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:40,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:40,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:40,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:41:40,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:41:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:40,749 INFO L85 PathProgramCache]: Analyzing trace with hash 226383083, now seen corresponding path program 1 times [2022-11-23 14:41:40,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:40,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124302849] [2022-11-23 14:41:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:40,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:40,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:40,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124302849] [2022-11-23 14:41:40,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124302849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:40,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:40,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:40,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671511256] [2022-11-23 14:41:40,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:40,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:41:40,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:40,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:41:40,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:41:40,855 INFO L87 Difference]: Start difference. First operand 3858 states and 10356 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-23 14:41:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:41,236 INFO L93 Difference]: Finished difference Result 5151 states and 13200 transitions. [2022-11-23 14:41:41,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:41:41,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 11 [2022-11-23 14:41:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:41,269 INFO L225 Difference]: With dead ends: 5151 [2022-11-23 14:41:41,269 INFO L226 Difference]: Without dead ends: 5151 [2022-11-23 14:41:41,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:41:41,271 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 181 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:41,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 32 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:41:41,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2022-11-23 14:41:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 4194. [2022-11-23 14:41:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4194 states, 4112 states have (on average 2.7624027237354087) internal successors, (11359), 4193 states have internal predecessors, (11359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 11359 transitions. [2022-11-23 14:41:41,462 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 11359 transitions. Word has length 11 [2022-11-23 14:41:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:41,468 INFO L495 AbstractCegarLoop]: Abstraction has 4194 states and 11359 transitions. [2022-11-23 14:41:41,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-23 14:41:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 11359 transitions. [2022-11-23 14:41:41,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:41:41,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:41,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:41,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:41:41,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:41:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash 226383022, now seen corresponding path program 1 times [2022-11-23 14:41:41,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:41,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606894573] [2022-11-23 14:41:41,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:41,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:41,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:41,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606894573] [2022-11-23 14:41:41,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606894573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:41,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:41,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:41,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258652477] [2022-11-23 14:41:41,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:41,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:41:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:41,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:41:41,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:41:41,594 INFO L87 Difference]: Start difference. First operand 4194 states and 11359 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-23 14:41:42,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:42,049 INFO L93 Difference]: Finished difference Result 4674 states and 11896 transitions. [2022-11-23 14:41:42,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:41:42,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 11 [2022-11-23 14:41:42,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:42,069 INFO L225 Difference]: With dead ends: 4674 [2022-11-23 14:41:42,069 INFO L226 Difference]: Without dead ends: 4638 [2022-11-23 14:41:42,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:41:42,072 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 146 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:42,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 48 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:41:42,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2022-11-23 14:41:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 3800. [2022-11-23 14:41:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3720 states have (on average 2.717204301075269) internal successors, (10108), 3799 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 10108 transitions. [2022-11-23 14:41:42,239 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 10108 transitions. Word has length 11 [2022-11-23 14:41:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:42,240 INFO L495 AbstractCegarLoop]: Abstraction has 3800 states and 10108 transitions. [2022-11-23 14:41:42,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-23 14:41:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 10108 transitions. [2022-11-23 14:41:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:41:42,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:42,248 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 14:41:42,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:41:42,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:41:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:42,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1308263543, now seen corresponding path program 1 times [2022-11-23 14:41:42,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:42,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119040777] [2022-11-23 14:41:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:42,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:41:42,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:41:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:41:42,308 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:41:42,308 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:41:42,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-23 14:41:42,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-23 14:41:42,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-23 14:41:42,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-23 14:41:42,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-23 14:41:42,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-23 14:41:42,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-23 14:41:42,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-23 14:41:42,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-23 14:41:42,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-23 14:41:42,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-23 14:41:42,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-23 14:41:42,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-23 14:41:42,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-23 14:41:42,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-23 14:41:42,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-23 14:41:42,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-23 14:41:42,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:41:42,316 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:42,316 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 14:41:42,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 14:41:42,363 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 14:41:42,370 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:41:42,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 217 transitions, 464 flow [2022-11-23 14:41:42,370 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 217 transitions, 464 flow [2022-11-23 14:41:42,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 217 transitions, 464 flow [2022-11-23 14:41:42,480 INFO L130 PetriNetUnfolder]: 62/464 cut-off events. [2022-11-23 14:41:42,480 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 14:41:42,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 464 events. 62/464 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1556 event pairs, 1 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2022-11-23 14:41:42,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 21816 [2022-11-23 14:41:48,132 INFO L134 LiptonReduction]: Checked pairs total: 53344 [2022-11-23 14:41:48,133 INFO L136 LiptonReduction]: Total number of compositions: 198 [2022-11-23 14:41:48,135 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 90 transitions, 210 flow [2022-11-23 14:41:51,134 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:51,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:41:51,136 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;@3667d5bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:41:51,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-23 14:41:51,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:51,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:41:51,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:51,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:41:51,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 14:41:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1327651352, now seen corresponding path program 1 times [2022-11-23 14:41:51,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:51,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732400309] [2022-11-23 14:41:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:51,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:51,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:51,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732400309] [2022-11-23 14:41:51,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732400309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:51,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:51,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:41:51,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877518573] [2022-11-23 14:41:51,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:51,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:51,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:51,508 INFO L87 Difference]: Start difference. First operand has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:53,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:53,272 INFO L93 Difference]: Finished difference Result 65753 states and 242942 transitions. [2022-11-23 14:41:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:53,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 14:41:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:54,246 INFO L225 Difference]: With dead ends: 65753 [2022-11-23 14:41:54,246 INFO L226 Difference]: Without dead ends: 65627 [2022-11-23 14:41:54,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:54,248 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:54,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 18 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:41:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65627 states. [2022-11-23 14:41:57,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65627 to 65627. [2022-11-23 14:41:57,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65627 states, 64688 states have (on average 3.7490106356665844) internal successors, (242516), 65626 states have internal predecessors, (242516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65627 states to 65627 states and 242516 transitions. [2022-11-23 14:41:57,931 INFO L78 Accepts]: Start accepts. Automaton has 65627 states and 242516 transitions. Word has length 5 [2022-11-23 14:41:57,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:57,947 INFO L495 AbstractCegarLoop]: Abstraction has 65627 states and 242516 transitions. [2022-11-23 14:41:57,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:57,948 INFO L276 IsEmpty]: Start isEmpty. Operand 65627 states and 242516 transitions. [2022-11-23 14:41:57,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:41:57,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:57,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:57,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:41:57,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 14:41:57,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:57,950 INFO L85 PathProgramCache]: Analyzing trace with hash 276768763, now seen corresponding path program 1 times [2022-11-23 14:41:57,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:57,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939462473] [2022-11-23 14:41:57,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:57,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:58,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939462473] [2022-11-23 14:41:58,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939462473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:58,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:58,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:41:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295717115] [2022-11-23 14:41:58,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:58,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:58,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:58,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:58,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:58,021 INFO L87 Difference]: Start difference. First operand 65627 states and 242516 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:59,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:59,263 INFO L93 Difference]: Finished difference Result 87108 states and 297054 transitions. [2022-11-23 14:41:59,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:59,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 14:41:59,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:59,929 INFO L225 Difference]: With dead ends: 87108 [2022-11-23 14:41:59,929 INFO L226 Difference]: Without dead ends: 86964 [2022-11-23 14:41:59,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:59,930 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 46 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:59,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 18 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86964 states. [2022-11-23 14:42:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86964 to 81528. [2022-11-23 14:42:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81528 states, 80637 states have (on average 3.5427037216166277) internal successors, (285673), 81527 states have internal predecessors, (285673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81528 states to 81528 states and 285673 transitions. [2022-11-23 14:42:03,546 INFO L78 Accepts]: Start accepts. Automaton has 81528 states and 285673 transitions. Word has length 7 [2022-11-23 14:42:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:03,547 INFO L495 AbstractCegarLoop]: Abstraction has 81528 states and 285673 transitions. [2022-11-23 14:42:03,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 81528 states and 285673 transitions. [2022-11-23 14:42:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:42:03,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:03,547 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 14:42:03,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:42:03,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 14:42:03,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash -436092803, now seen corresponding path program 1 times [2022-11-23 14:42:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:03,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378443207] [2022-11-23 14:42:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:42:03,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:03,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378443207] [2022-11-23 14:42:03,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378443207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:03,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:03,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:42:03,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273819734] [2022-11-23 14:42:03,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:03,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:03,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:03,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:03,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:03,604 INFO L87 Difference]: Start difference. First operand 81528 states and 285673 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:05,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:05,125 INFO L93 Difference]: Finished difference Result 77418 states and 270265 transitions. [2022-11-23 14:42:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:05,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 9 [2022-11-23 14:42:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:05,564 INFO L225 Difference]: With dead ends: 77418 [2022-11-23 14:42:05,564 INFO L226 Difference]: Without dead ends: 77418 [2022-11-23 14:42:05,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:05,565 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:05,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 16 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77418 states. [2022-11-23 14:42:07,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77418 to 77418. [2022-11-23 14:42:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77418 states, 76665 states have (on average 3.5252722885280114) internal successors, (270265), 77417 states have internal predecessors, (270265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77418 states to 77418 states and 270265 transitions. [2022-11-23 14:42:08,782 INFO L78 Accepts]: Start accepts. Automaton has 77418 states and 270265 transitions. Word has length 9 [2022-11-23 14:42:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:08,783 INFO L495 AbstractCegarLoop]: Abstraction has 77418 states and 270265 transitions. [2022-11-23 14:42:08,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 77418 states and 270265 transitions. [2022-11-23 14:42:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:42:08,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:08,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 14:42:08,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:42:08,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 14:42:08,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash -436092866, now seen corresponding path program 1 times [2022-11-23 14:42:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:08,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760972994] [2022-11-23 14:42:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:08,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:42:08,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:08,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760972994] [2022-11-23 14:42:08,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760972994] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:42:08,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488623616] [2022-11-23 14:42:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:08,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:42:08,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:42:08,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:42:08,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:42:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:08,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:42:08,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:42:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:42:08,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:42:08,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488623616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:08,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:42:08,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-23 14:42:08,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264762307] [2022-11-23 14:42:08,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:08,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:42:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:08,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:42:08,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:42:08,966 INFO L87 Difference]: Start difference. First operand 77418 states and 270265 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:09,580 INFO L93 Difference]: Finished difference Result 73308 states and 254857 transitions. [2022-11-23 14:42:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:42:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 9 [2022-11-23 14:42:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:10,644 INFO L225 Difference]: With dead ends: 73308 [2022-11-23 14:42:10,645 INFO L226 Difference]: Without dead ends: 73308 [2022-11-23 14:42:10,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:42:10,645 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 76 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:10,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 13 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:10,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73308 states. [2022-11-23 14:42:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73308 to 73308. [2022-11-23 14:42:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73308 states, 72693 states have (on average 3.5059359223033857) internal successors, (254857), 73307 states have internal predecessors, (254857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:12,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73308 states to 73308 states and 254857 transitions. [2022-11-23 14:42:12,893 INFO L78 Accepts]: Start accepts. Automaton has 73308 states and 254857 transitions. Word has length 9 [2022-11-23 14:42:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:12,893 INFO L495 AbstractCegarLoop]: Abstraction has 73308 states and 254857 transitions. [2022-11-23 14:42:12,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 73308 states and 254857 transitions. [2022-11-23 14:42:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:42:12,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:12,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:12,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 14:42:13,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b6f9bb-d7c5-45d4-a1a1-021bed08f51a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:42:13,095 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 14:42:13,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:13,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1120075483, now seen corresponding path program 1 times [2022-11-23 14:42:13,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:13,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121169527] [2022-11-23 14:42:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:13,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:42:13,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:13,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121169527] [2022-11-23 14:42:13,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121169527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:13,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:13,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105586704] [2022-11-23 14:42:13,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:13,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:42:13,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:42:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:42:13,165 INFO L87 Difference]: Start difference. First operand 73308 states and 254857 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:15,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:15,011 INFO L93 Difference]: Finished difference Result 106039 states and 353602 transitions. [2022-11-23 14:42:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:42:15,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 10 [2022-11-23 14:42:15,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:15,456 INFO L225 Difference]: With dead ends: 106039 [2022-11-23 14:42:15,457 INFO L226 Difference]: Without dead ends: 106039 [2022-11-23 14:42:15,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:42:15,458 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 221 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:15,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 65 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:42:15,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106039 states. [2022-11-23 14:42:18,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106039 to 88279. [2022-11-23 14:42:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88279 states, 87685 states have (on average 3.4900153960198437) internal successors, (306022), 88278 states have internal predecessors, (306022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88279 states to 88279 states and 306022 transitions. [2022-11-23 14:42:18,915 INFO L78 Accepts]: Start accepts. Automaton has 88279 states and 306022 transitions. Word has length 10 [2022-11-23 14:42:18,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:18,915 INFO L495 AbstractCegarLoop]: Abstraction has 88279 states and 306022 transitions. [2022-11-23 14:42:18,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 88279 states and 306022 transitions. [2022-11-23 14:42:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:42:18,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:18,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:18,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:42:18,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 14:42:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash -362604327, now seen corresponding path program 1 times [2022-11-23 14:42:18,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:18,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589759641] [2022-11-23 14:42:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:42:19,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:19,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589759641] [2022-11-23 14:42:19,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589759641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:19,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:19,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:19,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495752812] [2022-11-23 14:42:19,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:19,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:42:19,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:42:19,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:42:19,014 INFO L87 Difference]: Start difference. First operand 88279 states and 306022 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-23 14:42:21,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:21,118 INFO L93 Difference]: Finished difference Result 105598 states and 345514 transitions. [2022-11-23 14:42:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:42:21,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 11 [2022-11-23 14:42:21,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:21,762 INFO L225 Difference]: With dead ends: 105598 [2022-11-23 14:42:21,762 INFO L226 Difference]: Without dead ends: 105454 [2022-11-23 14:42:21,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:42:21,763 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 209 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:21,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 83 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:42:22,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105454 states. [2022-11-23 14:42:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105454 to 87830. [2022-11-23 14:42:25,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87830 states, 87217 states have (on average 3.4154694612288887) internal successors, (297887), 87829 states have internal predecessors, (297887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87830 states to 87830 states and 297887 transitions. [2022-11-23 14:42:25,316 INFO L78 Accepts]: Start accepts. Automaton has 87830 states and 297887 transitions. Word has length 11 [2022-11-23 14:42:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:25,316 INFO L495 AbstractCegarLoop]: Abstraction has 87830 states and 297887 transitions. [2022-11-23 14:42:25,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-23 14:42:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 87830 states and 297887 transitions. [2022-11-23 14:42:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:42:25,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:25,318 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:25,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 14:42:25,318 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 14:42:25,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash 143740387, now seen corresponding path program 1 times [2022-11-23 14:42:25,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:25,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62506963] [2022-11-23 14:42:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:25,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:42:25,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:25,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62506963] [2022-11-23 14:42:25,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62506963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:25,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:25,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:25,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504574664] [2022-11-23 14:42:25,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:25,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:42:25,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:25,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:42:25,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:42:25,389 INFO L87 Difference]: Start difference. First operand 87830 states and 297887 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:27,271 INFO L93 Difference]: Finished difference Result 112640 states and 375367 transitions. [2022-11-23 14:42:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:42:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 14:42:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:27,784 INFO L225 Difference]: With dead ends: 112640 [2022-11-23 14:42:27,785 INFO L226 Difference]: Without dead ends: 112640 [2022-11-23 14:42:27,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:42:27,785 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 196 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:27,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 51 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:42:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112640 states.