./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:30:53,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:30:53,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:30:53,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:30:53,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:30:53,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:30:53,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:30:53,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:30:53,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:30:53,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:30:53,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:30:53,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:30:53,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:30:53,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:30:53,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:30:53,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:30:53,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:30:53,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:30:53,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:30:53,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:30:53,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:30:53,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:30:53,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:30:53,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:30:53,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:30:53,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:30:53,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:30:53,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:30:53,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:30:53,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:30:53,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:30:53,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:30:53,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:30:53,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:30:53,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:30:53,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:30:53,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:30:53,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:30:53,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:30:53,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:30:53,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:30:53,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 09:30:53,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:30:53,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:30:53,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:30:53,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:30:53,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:30:53,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:30:53,458 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:30:53,458 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:30:53,458 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:30:53,458 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:30:53,458 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:30:53,458 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:30:53,458 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:30:53,458 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:30:53,459 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:30:53,459 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:30:53,459 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:30:53,459 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:30:53,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:30:53,460 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:30:53,460 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 09:30:53,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:30:53,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:30:53,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:30:53,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:30:53,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:30:53,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:30:53,460 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 09:30:53,461 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:30:53,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:30:53,461 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:30:53,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:30:53,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:30:53,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:30:53,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:30:53,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:30:53,462 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:30:53,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:30:53,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:30:53,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:30:53,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:30:53,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:30:53,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:30:53,462 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_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 [2022-12-14 09:30:53,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:30:53,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:30:53,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:30:53,652 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:30:53,652 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:30:53,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-12-14 09:30:56,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:30:56,355 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:30:56,355 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-12-14 09:30:56,363 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/data/0aa1fc9e4/e59eb1ac05de42f1999eea211e95ac0d/FLAGbfed956b2 [2022-12-14 09:30:56,766 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/data/0aa1fc9e4/e59eb1ac05de42f1999eea211e95ac0d [2022-12-14 09:30:56,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:30:56,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:30:56,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:30:56,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:30:56,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:30:56,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:30:56" (1/1) ... [2022-12-14 09:30:56,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e917b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:56, skipping insertion in model container [2022-12-14 09:30:56,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:30:56" (1/1) ... [2022-12-14 09:30:56,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:30:56,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:30:56,998 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_0468eab3-1161-40b5-806b-b85fec040406/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-12-14 09:30:57,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:30:57,022 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:30:57,043 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_0468eab3-1161-40b5-806b-b85fec040406/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-12-14 09:30:57,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:30:57,071 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:30:57,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57 WrapperNode [2022-12-14 09:30:57,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:30:57,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:30:57,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:30:57,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:30:57,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,100 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-12-14 09:30:57,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:30:57,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:30:57,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:30:57,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:30:57,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,118 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:30:57,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:30:57,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:30:57,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:30:57,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (1/1) ... [2022-12-14 09:30:57,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:30:57,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:30:57,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:30:57,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:30:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:30:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:30:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 09:30:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:30:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:30:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 09:30:57,173 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 09:30:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:30:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:30:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:30:57,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:30:57,174 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 09:30:57,272 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:30:57,274 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:30:57,472 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:30:57,477 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:30:57,478 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-14 09:30:57,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:30:57 BoogieIcfgContainer [2022-12-14 09:30:57,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:30:57,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:30:57,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:30:57,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:30:57,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:30:56" (1/3) ... [2022-12-14 09:30:57,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cfb24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:30:57, skipping insertion in model container [2022-12-14 09:30:57,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:30:57" (2/3) ... [2022-12-14 09:30:57,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cfb24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:30:57, skipping insertion in model container [2022-12-14 09:30:57,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:30:57" (3/3) ... [2022-12-14 09:30:57,485 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2022-12-14 09:30:57,491 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 09:30:57,499 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:30:57,499 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 09:30:57,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 09:30:57,542 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 09:30:57,565 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:30:57,575 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 132 transitions, 272 flow [2022-12-14 09:30:57,577 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 132 transitions, 272 flow [2022-12-14 09:30:57,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 272 flow [2022-12-14 09:30:57,624 INFO L130 PetriNetUnfolder]: 17/169 cut-off events. [2022-12-14 09:30:57,625 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-14 09:30:57,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 169 events. 17/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 407 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-12-14 09:30:57,631 INFO L119 LiptonReduction]: Number of co-enabled transitions 3760 [2022-12-14 09:31:00,217 INFO L134 LiptonReduction]: Checked pairs total: 6312 [2022-12-14 09:31:00,218 INFO L136 LiptonReduction]: Total number of compositions: 126 [2022-12-14 09:31:00,223 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 42 transitions, 92 flow [2022-12-14 09:31:00,243 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 220 states, 193 states have (on average 2.7409326424870466) internal successors, (529), 219 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:00,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:31:00,260 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;@7b4e9f5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:31:00,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-14 09:31:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 220 states, 193 states have (on average 2.7409326424870466) internal successors, (529), 219 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:00,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 09:31:00,265 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:00,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 09:31:00,266 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)] === [2022-12-14 09:31:00,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash 15754629, now seen corresponding path program 1 times [2022-12-14 09:31:00,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:00,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654858965] [2022-12-14 09:31:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:00,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:00,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654858965] [2022-12-14 09:31:00,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654858965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:00,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:31:00,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 09:31:00,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244624024] [2022-12-14 09:31:00,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:00,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:31:00,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:00,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:31:00,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:00,464 INFO L87 Difference]: Start difference. First operand has 220 states, 193 states have (on average 2.7409326424870466) internal successors, (529), 219 states have internal predecessors, (529), 0 states have call successors, (0), 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) [2022-12-14 09:31:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:00,534 INFO L93 Difference]: Finished difference Result 184 states and 333 transitions. [2022-12-14 09:31:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:31:00,537 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 [2022-12-14 09:31:00,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:00,543 INFO L225 Difference]: With dead ends: 184 [2022-12-14 09:31:00,543 INFO L226 Difference]: Without dead ends: 178 [2022-12-14 09:31:00,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:00,546 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:00,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:31:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-12-14 09:31:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-12-14 09:31:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 163 states have (on average 1.98159509202454) internal successors, (323), 177 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 323 transitions. [2022-12-14 09:31:00,578 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 323 transitions. Word has length 4 [2022-12-14 09:31:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:00,578 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 323 transitions. [2022-12-14 09:31:00,579 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) [2022-12-14 09:31:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 323 transitions. [2022-12-14 09:31:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 09:31:00,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:00,579 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 09:31:00,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:31:00,579 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)] === [2022-12-14 09:31:00,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:00,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2039640134, now seen corresponding path program 1 times [2022-12-14 09:31:00,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:00,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374716049] [2022-12-14 09:31:00,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:00,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:31:00,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:31:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:31:00,640 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:31:00,640 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:31:00,642 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-14 09:31:00,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-14 09:31:00,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-14 09:31:00,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-14 09:31:00,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-14 09:31:00,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-14 09:31:00,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-14 09:31:00,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-14 09:31:00,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-14 09:31:00,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-14 09:31:00,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-14 09:31:00,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-14 09:31:00,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-14 09:31:00,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:31:00,647 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 09:31:00,648 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 09:31:00,648 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 09:31:00,666 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 09:31:00,669 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:31:00,669 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 174 transitions, 366 flow [2022-12-14 09:31:00,669 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 174 transitions, 366 flow [2022-12-14 09:31:00,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 174 transitions, 366 flow [2022-12-14 09:31:00,715 INFO L130 PetriNetUnfolder]: 31/285 cut-off events. [2022-12-14 09:31:00,716 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 09:31:00,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 285 events. 31/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 884 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-12-14 09:31:00,723 INFO L119 LiptonReduction]: Number of co-enabled transitions 12240 [2022-12-14 09:31:03,595 INFO L134 LiptonReduction]: Checked pairs total: 25483 [2022-12-14 09:31:03,595 INFO L136 LiptonReduction]: Total number of compositions: 156 [2022-12-14 09:31:03,596 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 67 transitions, 152 flow [2022-12-14 09:31:03,723 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) [2022-12-14 09:31:03,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:31:03,725 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;@7b4e9f5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:31:03,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-14 09:31:03,737 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) [2022-12-14 09:31:03,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 09:31:03,738 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:03,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 09:31:03,738 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)] === [2022-12-14 09:31:03,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:03,739 INFO L85 PathProgramCache]: Analyzing trace with hash 843833790, now seen corresponding path program 1 times [2022-12-14 09:31:03,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:03,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015121766] [2022-12-14 09:31:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:03,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:03,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:03,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015121766] [2022-12-14 09:31:03,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015121766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:03,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:31:03,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 09:31:03,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283999087] [2022-12-14 09:31:03,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:03,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:31:03,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:03,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:31:03,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:03,810 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) [2022-12-14 09:31:03,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:03,931 INFO L93 Difference]: Finished difference Result 3945 states and 10756 transitions. [2022-12-14 09:31:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:31:03,932 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 [2022-12-14 09:31:03,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:03,956 INFO L225 Difference]: With dead ends: 3945 [2022-12-14 09:31:03,956 INFO L226 Difference]: Without dead ends: 3919 [2022-12-14 09:31:03,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:03,957 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:03,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:31:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-12-14 09:31:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3919. [2022-12-14 09:31:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3766 states have (on average 2.8385554965480617) internal successors, (10690), 3918 states have internal predecessors, (10690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 10690 transitions. [2022-12-14 09:31:04,103 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 10690 transitions. Word has length 5 [2022-12-14 09:31:04,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:04,104 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 10690 transitions. [2022-12-14 09:31:04,104 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) [2022-12-14 09:31:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 10690 transitions. [2022-12-14 09:31:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 09:31:04,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:04,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:31:04,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:31:04,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 09:31:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash -818501220, now seen corresponding path program 1 times [2022-12-14 09:31:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:04,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967182314] [2022-12-14 09:31:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:04,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:04,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967182314] [2022-12-14 09:31:04,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967182314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:04,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:31:04,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:31:04,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116721115] [2022-12-14 09:31:04,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:04,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:31:04,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:04,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:31:04,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:31:04,223 INFO L87 Difference]: Start difference. First operand 3919 states and 10690 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-12-14 09:31:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:04,336 INFO L93 Difference]: Finished difference Result 3582 states and 9697 transitions. [2022-12-14 09:31:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:31:04,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2022-12-14 09:31:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:04,349 INFO L225 Difference]: With dead ends: 3582 [2022-12-14 09:31:04,349 INFO L226 Difference]: Without dead ends: 3582 [2022-12-14 09:31:04,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:31:04,350 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:04,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 22 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:31:04,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2022-12-14 09:31:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3579. [2022-12-14 09:31:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 3446 states have (on average 2.812536273940801) internal successors, (9692), 3578 states have internal predecessors, (9692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 9692 transitions. [2022-12-14 09:31:04,424 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 9692 transitions. Word has length 7 [2022-12-14 09:31:04,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:04,424 INFO L495 AbstractCegarLoop]: Abstraction has 3579 states and 9692 transitions. [2022-12-14 09:31:04,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-12-14 09:31:04,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 9692 transitions. [2022-12-14 09:31:04,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 09:31:04,425 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:04,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 09:31:04,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 09:31:04,425 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)] === [2022-12-14 09:31:04,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:04,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2089852985, now seen corresponding path program 1 times [2022-12-14 09:31:04,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:04,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583841629] [2022-12-14 09:31:04,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:04,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:31:04,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:04,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583841629] [2022-12-14 09:31:04,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583841629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:04,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:31:04,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:31:04,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790889209] [2022-12-14 09:31:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:04,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:31:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:31:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:04,454 INFO L87 Difference]: Start difference. First operand 3579 states and 9692 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) [2022-12-14 09:31:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:04,556 INFO L93 Difference]: Finished difference Result 3347 states and 9028 transitions. [2022-12-14 09:31:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:31:04,557 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 [2022-12-14 09:31:04,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:04,569 INFO L225 Difference]: With dead ends: 3347 [2022-12-14 09:31:04,569 INFO L226 Difference]: Without dead ends: 3347 [2022-12-14 09:31:04,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:04,570 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:04,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 12 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:31:04,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2022-12-14 09:31:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3347. [2022-12-14 09:31:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 3235 states have (on average 2.790726429675425) internal successors, (9028), 3346 states have internal predecessors, (9028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 9028 transitions. [2022-12-14 09:31:04,655 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 9028 transitions. Word has length 9 [2022-12-14 09:31:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:04,656 INFO L495 AbstractCegarLoop]: Abstraction has 3347 states and 9028 transitions. [2022-12-14 09:31:04,656 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) [2022-12-14 09:31:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 9028 transitions. [2022-12-14 09:31:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 09:31:04,657 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:04,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 09:31:04,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 09:31:04,657 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)] === [2022-12-14 09:31:04,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:04,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2089853025, now seen corresponding path program 1 times [2022-12-14 09:31:04,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:04,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855813534] [2022-12-14 09:31:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:04,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:04,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:04,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855813534] [2022-12-14 09:31:04,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855813534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:04,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:31:04,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:31:04,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279610897] [2022-12-14 09:31:04,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:04,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:31:04,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:04,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:31:04,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:04,693 INFO L87 Difference]: Start difference. First operand 3347 states and 9028 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) [2022-12-14 09:31:04,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:04,764 INFO L93 Difference]: Finished difference Result 3115 states and 8364 transitions. [2022-12-14 09:31:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:31:04,764 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 [2022-12-14 09:31:04,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:04,789 INFO L225 Difference]: With dead ends: 3115 [2022-12-14 09:31:04,789 INFO L226 Difference]: Without dead ends: 3115 [2022-12-14 09:31:04,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:04,790 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:04,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:31:04,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2022-12-14 09:31:04,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 3115. [2022-12-14 09:31:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 3024 states have (on average 2.765873015873016) internal successors, (8364), 3114 states have internal predecessors, (8364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 8364 transitions. [2022-12-14 09:31:04,855 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 8364 transitions. Word has length 9 [2022-12-14 09:31:04,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:04,856 INFO L495 AbstractCegarLoop]: Abstraction has 3115 states and 8364 transitions. [2022-12-14 09:31:04,856 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) [2022-12-14 09:31:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 8364 transitions. [2022-12-14 09:31:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 09:31:04,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:04,856 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 09:31:04,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 09:31:04,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 09:31:04,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:04,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1696002555, now seen corresponding path program 1 times [2022-12-14 09:31:04,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:04,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074847259] [2022-12-14 09:31:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:04,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:31:04,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:31:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:31:04,877 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:31:04,877 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:31:04,877 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-14 09:31:04,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-14 09:31:04,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-14 09:31:04,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-14 09:31:04,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-14 09:31:04,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-14 09:31:04,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 09:31:04,879 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-14 09:31:04,879 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 09:31:04,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 09:31:04,907 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 09:31:04,908 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:31:04,909 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 216 transitions, 462 flow [2022-12-14 09:31:04,909 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 216 transitions, 462 flow [2022-12-14 09:31:04,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2022-12-14 09:31:04,967 INFO L130 PetriNetUnfolder]: 50/442 cut-off events. [2022-12-14 09:31:04,967 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-14 09:31:04,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 442 events. 50/442 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1528 event pairs, 1 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 293. Up to 16 conditions per place. [2022-12-14 09:31:04,995 INFO L119 LiptonReduction]: Number of co-enabled transitions 23520 [2022-12-14 09:31:08,209 INFO L134 LiptonReduction]: Checked pairs total: 49941 [2022-12-14 09:31:08,209 INFO L136 LiptonReduction]: Total number of compositions: 198 [2022-12-14 09:31:08,210 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 90 transitions, 210 flow [2022-12-14 09:31:09,600 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) [2022-12-14 09:31:09,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:31:09,602 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;@7b4e9f5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:31:09,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-14 09:31:09,698 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) [2022-12-14 09:31:09,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 09:31:09,699 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:09,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 09:31:09,699 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)] === [2022-12-14 09:31:09,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:09,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1277402844, now seen corresponding path program 1 times [2022-12-14 09:31:09,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:09,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469528810] [2022-12-14 09:31:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:09,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:09,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:09,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469528810] [2022-12-14 09:31:09,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469528810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:09,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:31:09,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 09:31:09,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785342565] [2022-12-14 09:31:09,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:09,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:31:09,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:09,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:31:09,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:09,874 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) [2022-12-14 09:31:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:10,606 INFO L93 Difference]: Finished difference Result 65753 states and 238574 transitions. [2022-12-14 09:31:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:31:10,608 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 [2022-12-14 09:31:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:10,964 INFO L225 Difference]: With dead ends: 65753 [2022-12-14 09:31:10,964 INFO L226 Difference]: Without dead ends: 65627 [2022-12-14 09:31:10,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:10,965 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:10,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:31:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65627 states. [2022-12-14 09:31:12,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65627 to 65627. [2022-12-14 09:31:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65627 states, 64688 states have (on average 3.681486519910957) internal successors, (238148), 65626 states have internal predecessors, (238148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65627 states to 65627 states and 238148 transitions. [2022-12-14 09:31:12,924 INFO L78 Accepts]: Start accepts. Automaton has 65627 states and 238148 transitions. Word has length 5 [2022-12-14 09:31:12,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:12,924 INFO L495 AbstractCegarLoop]: Abstraction has 65627 states and 238148 transitions. [2022-12-14 09:31:12,925 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) [2022-12-14 09:31:12,925 INFO L276 IsEmpty]: Start isEmpty. Operand 65627 states and 238148 transitions. [2022-12-14 09:31:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 09:31:12,925 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:12,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:31:12,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 09:31:12,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 09:31:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:12,926 INFO L85 PathProgramCache]: Analyzing trace with hash -769051765, now seen corresponding path program 1 times [2022-12-14 09:31:12,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:12,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945018677] [2022-12-14 09:31:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:12,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:13,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:13,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945018677] [2022-12-14 09:31:13,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945018677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:13,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:31:13,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:31:13,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31266930] [2022-12-14 09:31:13,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:13,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:31:13,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:13,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:31:13,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:31:13,031 INFO L87 Difference]: Start difference. First operand 65627 states and 238148 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-12-14 09:31:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:13,594 INFO L93 Difference]: Finished difference Result 62409 states and 225605 transitions. [2022-12-14 09:31:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:31:13,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2022-12-14 09:31:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:13,896 INFO L225 Difference]: With dead ends: 62409 [2022-12-14 09:31:13,896 INFO L226 Difference]: Without dead ends: 62409 [2022-12-14 09:31:13,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:31:13,897 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 58 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:13,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 17 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:31:14,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62409 states. [2022-12-14 09:31:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62409 to 62403. [2022-12-14 09:31:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62403 states, 61512 states have (on average 3.6674470022109507) internal successors, (225592), 62402 states have internal predecessors, (225592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:15,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62403 states to 62403 states and 225592 transitions. [2022-12-14 09:31:15,496 INFO L78 Accepts]: Start accepts. Automaton has 62403 states and 225592 transitions. Word has length 7 [2022-12-14 09:31:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:15,496 INFO L495 AbstractCegarLoop]: Abstraction has 62403 states and 225592 transitions. [2022-12-14 09:31:15,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-12-14 09:31:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 62403 states and 225592 transitions. [2022-12-14 09:31:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 09:31:15,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:15,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 09:31:15,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 09:31:15,497 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)] === [2022-12-14 09:31:15,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:15,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1133728956, now seen corresponding path program 1 times [2022-12-14 09:31:15,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:15,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120083968] [2022-12-14 09:31:15,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:15,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:31:15,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:15,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120083968] [2022-12-14 09:31:15,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120083968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:15,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:31:15,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:31:15,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970777330] [2022-12-14 09:31:15,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:15,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:31:15,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:15,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:31:15,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:15,521 INFO L87 Difference]: Start difference. First operand 62403 states and 225592 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) [2022-12-14 09:31:16,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:16,146 INFO L93 Difference]: Finished difference Result 58293 states and 210184 transitions. [2022-12-14 09:31:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:31:16,147 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 [2022-12-14 09:31:16,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:16,591 INFO L225 Difference]: With dead ends: 58293 [2022-12-14 09:31:16,591 INFO L226 Difference]: Without dead ends: 58293 [2022-12-14 09:31:16,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:16,592 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 14 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 [2022-12-14 09:31:16,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 14 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:31:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58293 states. [2022-12-14 09:31:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58293 to 58293. [2022-12-14 09:31:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58293 states, 57540 states have (on average 3.6528328119568996) internal successors, (210184), 58292 states have internal predecessors, (210184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58293 states to 58293 states and 210184 transitions. [2022-12-14 09:31:18,154 INFO L78 Accepts]: Start accepts. Automaton has 58293 states and 210184 transitions. Word has length 9 [2022-12-14 09:31:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:18,155 INFO L495 AbstractCegarLoop]: Abstraction has 58293 states and 210184 transitions. [2022-12-14 09:31:18,155 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) [2022-12-14 09:31:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 58293 states and 210184 transitions. [2022-12-14 09:31:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 09:31:18,155 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:18,155 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 09:31:18,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 09:31:18,156 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)] === [2022-12-14 09:31:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1133728909, now seen corresponding path program 1 times [2022-12-14 09:31:18,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:18,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099020747] [2022-12-14 09:31:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:18,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:18,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:18,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099020747] [2022-12-14 09:31:18,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099020747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:31:18,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131566759] [2022-12-14 09:31:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:18,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:31:18,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:31:18,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:31:18,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:31:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:18,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:31:18,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:31:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:18,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:31:18,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131566759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:18,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:31:18,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-14 09:31:18,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266264063] [2022-12-14 09:31:18,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:18,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:31:18,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:31:18,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:31:18,283 INFO L87 Difference]: Start difference. First operand 58293 states and 210184 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) [2022-12-14 09:31:18,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:18,626 INFO L93 Difference]: Finished difference Result 54183 states and 194776 transitions. [2022-12-14 09:31:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:31:18,627 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 [2022-12-14 09:31:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:18,983 INFO L225 Difference]: With dead ends: 54183 [2022-12-14 09:31:18,983 INFO L226 Difference]: Without dead ends: 54183 [2022-12-14 09:31:18,983 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 [2022-12-14 09:31:18,984 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:18,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 14 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:31:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54183 states. [2022-12-14 09:31:20,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54183 to 54183. [2022-12-14 09:31:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54183 states, 53568 states have (on average 3.6360513739546) internal successors, (194776), 54182 states have internal predecessors, (194776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54183 states to 54183 states and 194776 transitions. [2022-12-14 09:31:20,439 INFO L78 Accepts]: Start accepts. Automaton has 54183 states and 194776 transitions. Word has length 9 [2022-12-14 09:31:20,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:20,439 INFO L495 AbstractCegarLoop]: Abstraction has 54183 states and 194776 transitions. [2022-12-14 09:31:20,439 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) [2022-12-14 09:31:20,439 INFO L276 IsEmpty]: Start isEmpty. Operand 54183 states and 194776 transitions. [2022-12-14 09:31:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 09:31:20,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:20,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:31:20,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:31:20,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:31:20,642 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)] === [2022-12-14 09:31:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:20,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1846379789, now seen corresponding path program 1 times [2022-12-14 09:31:20,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:20,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024555245] [2022-12-14 09:31:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:20,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:20,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:20,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024555245] [2022-12-14 09:31:20,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024555245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:20,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:31:20,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:31:20,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259915878] [2022-12-14 09:31:20,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:20,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:31:20,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:20,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:31:20,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:20,730 INFO L87 Difference]: Start difference. First operand 54183 states and 194776 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:21,428 INFO L93 Difference]: Finished difference Result 79809 states and 277189 transitions. [2022-12-14 09:31:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:31:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 [2022-12-14 09:31:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:21,708 INFO L225 Difference]: With dead ends: 79809 [2022-12-14 09:31:21,708 INFO L226 Difference]: Without dead ends: 79809 [2022-12-14 09:31:21,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:31:21,709 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:21,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 21 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:31:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79809 states. [2022-12-14 09:31:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79809 to 67086. [2022-12-14 09:31:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67086 states, 66503 states have (on average 3.6260018345037066) internal successors, (241140), 67085 states have internal predecessors, (241140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67086 states to 67086 states and 241140 transitions. [2022-12-14 09:31:23,420 INFO L78 Accepts]: Start accepts. Automaton has 67086 states and 241140 transitions. Word has length 11 [2022-12-14 09:31:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:23,420 INFO L495 AbstractCegarLoop]: Abstraction has 67086 states and 241140 transitions. [2022-12-14 09:31:23,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 67086 states and 241140 transitions. [2022-12-14 09:31:23,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 09:31:23,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:23,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:31:23,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 09:31:23,421 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)] === [2022-12-14 09:31:23,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:23,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1846379767, now seen corresponding path program 1 times [2022-12-14 09:31:23,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:23,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985657637] [2022-12-14 09:31:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:23,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:23,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:23,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985657637] [2022-12-14 09:31:23,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985657637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:23,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:31:23,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:31:23,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203146146] [2022-12-14 09:31:23,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:23,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:31:23,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:23,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:31:23,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:31:23,544 INFO L87 Difference]: Start difference. First operand 67086 states and 241140 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:24,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:24,639 INFO L93 Difference]: Finished difference Result 93892 states and 321919 transitions. [2022-12-14 09:31:24,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 09:31:24,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2022-12-14 09:31:24,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:25,049 INFO L225 Difference]: With dead ends: 93892 [2022-12-14 09:31:25,049 INFO L226 Difference]: Without dead ends: 93823 [2022-12-14 09:31:25,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:31:25,050 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 201 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:25,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 70 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:31:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93823 states. [2022-12-14 09:31:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93823 to 85441. [2022-12-14 09:31:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85441 states, 84864 states have (on average 3.518700509049774) internal successors, (298611), 85440 states have internal predecessors, (298611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85441 states to 85441 states and 298611 transitions. [2022-12-14 09:31:27,156 INFO L78 Accepts]: Start accepts. Automaton has 85441 states and 298611 transitions. Word has length 11 [2022-12-14 09:31:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:27,156 INFO L495 AbstractCegarLoop]: Abstraction has 85441 states and 298611 transitions. [2022-12-14 09:31:27,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 85441 states and 298611 transitions. [2022-12-14 09:31:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 09:31:27,157 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:27,157 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:31:27,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 09:31:27,158 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)] === [2022-12-14 09:31:27,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:27,158 INFO L85 PathProgramCache]: Analyzing trace with hash 332664801, now seen corresponding path program 1 times [2022-12-14 09:31:27,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:27,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272896511] [2022-12-14 09:31:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:27,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:27,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:27,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272896511] [2022-12-14 09:31:27,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272896511] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:31:27,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885991014] [2022-12-14 09:31:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:27,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:31:27,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:31:27,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:31:27,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:31:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:27,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 09:31:27,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:31:27,714 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 09:31:27,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 09:31:27,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 09:31:27,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:31:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:27,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:31:27,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885991014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:27,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:31:27,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2022-12-14 09:31:27,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020173960] [2022-12-14 09:31:27,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:27,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:31:27,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:27,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:31:27,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:31:27,811 INFO L87 Difference]: Start difference. First operand 85441 states and 298611 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:28,468 INFO L93 Difference]: Finished difference Result 89281 states and 307849 transitions. [2022-12-14 09:31:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:31:28,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 09:31:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:28,999 INFO L225 Difference]: With dead ends: 89281 [2022-12-14 09:31:28,999 INFO L226 Difference]: Without dead ends: 89281 [2022-12-14 09:31:29,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:31:29,000 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 139 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:29,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 30 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:31:29,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89281 states. [2022-12-14 09:31:30,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89281 to 71221. [2022-12-14 09:31:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71221 states, 70759 states have (on average 3.533091196879549) internal successors, (249998), 71220 states have internal predecessors, (249998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71221 states to 71221 states and 249998 transitions. [2022-12-14 09:31:31,020 INFO L78 Accepts]: Start accepts. Automaton has 71221 states and 249998 transitions. Word has length 14 [2022-12-14 09:31:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:31,020 INFO L495 AbstractCegarLoop]: Abstraction has 71221 states and 249998 transitions. [2022-12-14 09:31:31,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 71221 states and 249998 transitions. [2022-12-14 09:31:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 09:31:31,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:31,021 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:31:31,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:31:31,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 09:31:31,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 09:31:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash 332664779, now seen corresponding path program 1 times [2022-12-14 09:31:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:31,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641932603] [2022-12-14 09:31:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:31,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:31,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641932603] [2022-12-14 09:31:31,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641932603] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:31:31,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823616428] [2022-12-14 09:31:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:31,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:31:31,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:31:31,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:31:31,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:31:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:31:31,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 09:31:31,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:31:31,549 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 09:31:31,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 09:31:31,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:31:31,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-14 09:31:31,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:31:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:31:31,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:31:31,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823616428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:31:31,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:31:31,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-12-14 09:31:31,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271799968] [2022-12-14 09:31:31,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:31:31,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:31:31,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:31,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:31:31,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:31:31,682 INFO L87 Difference]: Start difference. First operand 71221 states and 249998 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:32,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:31:32,196 INFO L93 Difference]: Finished difference Result 70106 states and 245713 transitions. [2022-12-14 09:31:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:31:32,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 09:31:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:31:32,435 INFO L225 Difference]: With dead ends: 70106 [2022-12-14 09:31:32,436 INFO L226 Difference]: Without dead ends: 70106 [2022-12-14 09:31:32,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:31:32,436 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 97 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:31:32,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 47 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:31:32,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70106 states. [2022-12-14 09:31:33,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70106 to 68200. [2022-12-14 09:31:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68200 states, 67750 states have (on average 3.5191143911439116) internal successors, (238420), 68199 states have internal predecessors, (238420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68200 states to 68200 states and 238420 transitions. [2022-12-14 09:31:34,285 INFO L78 Accepts]: Start accepts. Automaton has 68200 states and 238420 transitions. Word has length 14 [2022-12-14 09:31:34,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:31:34,285 INFO L495 AbstractCegarLoop]: Abstraction has 68200 states and 238420 transitions. [2022-12-14 09:31:34,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:31:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 68200 states and 238420 transitions. [2022-12-14 09:31:34,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 09:31:34,287 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:31:34,287 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 09:31:34,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 09:31:34,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0468eab3-1161-40b5-806b-b85fec040406/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 09:31:34,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 09:31:34,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:31:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash 631740762, now seen corresponding path program 1 times [2022-12-14 09:31:34,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:31:34,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566346934] [2022-12-14 09:31:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:31:34,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:31:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:31:34,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:31:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:31:34,526 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:31:34,526 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:31:34,526 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-14 09:31:34,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-14 09:31:34,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-14 09:31:34,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-14 09:31:34,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-14 09:31:34,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-14 09:31:34,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-14 09:31:34,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-14 09:31:34,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-14 09:31:34,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-14 09:31:34,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-14 09:31:34,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-14 09:31:34,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-14 09:31:34,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-14 09:31:34,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-14 09:31:34,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-14 09:31:34,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-14 09:31:34,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-14 09:31:34,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-14 09:31:34,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-14 09:31:34,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-14 09:31:34,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 09:31:34,531 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:31:34,531 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 09:31:34,531 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-14 09:31:34,554 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 09:31:34,557 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:31:34,557 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 258 transitions, 560 flow [2022-12-14 09:31:34,558 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 258 transitions, 560 flow [2022-12-14 09:31:34,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 258 transitions, 560 flow [2022-12-14 09:31:34,664 INFO L130 PetriNetUnfolder]: 81/683 cut-off events. [2022-12-14 09:31:34,665 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-14 09:31:34,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 683 events. 81/683 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2728 event pairs, 6 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 462. Up to 32 conditions per place. [2022-12-14 09:31:34,689 INFO L119 LiptonReduction]: Number of co-enabled transitions 38240 [2022-12-14 09:31:38,313 INFO L134 LiptonReduction]: Checked pairs total: 97723 [2022-12-14 09:31:38,313 INFO L136 LiptonReduction]: Total number of compositions: 234 [2022-12-14 09:31:38,313 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 112 transitions, 268 flow [2022-12-14 09:32:06,428 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1087085 states, 1081638 states have (on average 6.132270685756232) internal successors, (6632897), 1087084 states have internal predecessors, (6632897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:32:06,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:32:06,429 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;@7b4e9f5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:32:06,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-14 09:32:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 1087085 states, 1081638 states have (on average 6.132270685756232) internal successors, (6632897), 1087084 states have internal predecessors, (6632897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:32:08,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 09:32:08,123 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:32:08,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 09:32:08,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-14 09:32:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:32:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1787350005, now seen corresponding path program 1 times [2022-12-14 09:32:08,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:32:08,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306342399] [2022-12-14 09:32:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:32:08,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:32:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:32:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:32:08,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:32:08,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306342399] [2022-12-14 09:32:08,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306342399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:32:08,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:32:08,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 09:32:08,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122345949] [2022-12-14 09:32:08,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:32:08,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:32:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:32:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:32:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:32:09,848 INFO L87 Difference]: Start difference. First operand has 1087085 states, 1081638 states have (on average 6.132270685756232) internal successors, (6632897), 1087084 states have internal predecessors, (6632897), 0 states have call successors, (0), 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)