./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/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_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/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_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/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 2a12d5b905fa07b94a851888f481630fccc5d15913fb6b7efa54c908526d1783 --- 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 16:04:27,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:04:27,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:04:27,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:04:27,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:04:27,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:04:27,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:04:27,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:04:27,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:04:27,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:04:27,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:04:27,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:04:27,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:04:27,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:04:27,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:04:27,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:04:27,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:04:27,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:04:27,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:04:27,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:04:27,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:04:27,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:04:27,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:04:27,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:04:27,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:04:27,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:04:27,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:04:27,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:04:27,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:04:27,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:04:27,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:04:27,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:04:27,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:04:27,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:04:27,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:04:27,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:04:27,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:04:27,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:04:27,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:04:27,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:04:27,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:04:27,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 16:04:27,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:04:27,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:04:27,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:04:27,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:04:27,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:04:27,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:04:27,843 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:04:27,843 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:04:27,843 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:04:27,843 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 16:04:27,844 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:04:27,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:04:27,844 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 16:04:27,844 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 16:04:27,844 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:04:27,845 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 16:04:27,845 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 16:04:27,845 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 16:04:27,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:04:27,846 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:04:27,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 16:04:27,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:04:27,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:04:27,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:04:27,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:04:27,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:04:27,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:04:27,847 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 16:04:27,847 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:04:27,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:04:27,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:04:27,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:04:27,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:04:27,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:04:27,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:04:27,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:04:27,849 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 16:04:27,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:04:27,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:04:27,849 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 16:04:27,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:04:27,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:04:27,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:04:27,850 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_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a12d5b905fa07b94a851888f481630fccc5d15913fb6b7efa54c908526d1783 [2022-12-14 16:04:28,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:04:28,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:04:28,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:04:28,059 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:04:28,059 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:04:28,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread/fib_safe-7.i [2022-12-14 16:04:30,674 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:04:30,839 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:04:30,839 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/sv-benchmarks/c/pthread/fib_safe-7.i [2022-12-14 16:04:30,847 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/data/91e4c4ade/6c5c56fb51b24d9090c4ba3c991898b9/FLAG7d9f5e821 [2022-12-14 16:04:30,858 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/data/91e4c4ade/6c5c56fb51b24d9090c4ba3c991898b9 [2022-12-14 16:04:30,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:04:30,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:04:30,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:04:30,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:04:30,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:04:30,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:04:30" (1/1) ... [2022-12-14 16:04:30,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75234e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:30, skipping insertion in model container [2022-12-14 16:04:30,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:04:30" (1/1) ... [2022-12-14 16:04:30,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:04:30,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:04:31,151 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_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/sv-benchmarks/c/pthread/fib_safe-7.i[30241,30254] [2022-12-14 16:04:31,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:04:31,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:04:31,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:04:31,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:04:31,167 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:04:31,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:04:31,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:04:31,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:04:31,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:04:31,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:04:31,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:04:31,182 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:04:31,204 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_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/sv-benchmarks/c/pthread/fib_safe-7.i[30241,30254] [2022-12-14 16:04:31,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:04:31,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:04:31,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:04:31,207 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:04:31,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:04:31,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:04:31,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:04:31,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:04:31,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:04:31,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:04:31,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:04:31,232 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:04:31,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31 WrapperNode [2022-12-14 16:04:31,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:04:31,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:04:31,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:04:31,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:04:31,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,262 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-12-14 16:04:31,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:04:31,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:04:31,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:04:31,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:04:31,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:04:31,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:04:31,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:04:31,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:04:31,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (1/1) ... [2022-12-14 16:04:31,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:04:31,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:31,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:04:31,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:04:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-14 16:04:31,341 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-14 16:04:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-14 16:04:31,341 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-14 16:04:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 16:04:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 16:04:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:04:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 16:04:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 16:04:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:04:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 16:04:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:04:31,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:04:31,344 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 16:04:31,450 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:04:31,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:04:31,643 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:04:31,669 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:04:31,669 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 16:04:31,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:04:31 BoogieIcfgContainer [2022-12-14 16:04:31,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:04:31,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:04:31,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:04:31,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:04:31,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:04:30" (1/3) ... [2022-12-14 16:04:31,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169729a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:04:31, skipping insertion in model container [2022-12-14 16:04:31,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:31" (2/3) ... [2022-12-14 16:04:31,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169729a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:04:31, skipping insertion in model container [2022-12-14 16:04:31,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:04:31" (3/3) ... [2022-12-14 16:04:31,681 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-7.i [2022-12-14 16:04:31,689 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 16:04:31,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:04:31,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-14 16:04:31,697 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 16:04:31,764 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 16:04:31,796 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 16:04:31,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 120 transitions, 250 flow [2022-12-14 16:04:31,813 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 120 transitions, 250 flow [2022-12-14 16:04:31,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-12-14 16:04:31,868 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-12-14 16:04:31,869 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 16:04:31,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-14 16:04:31,878 INFO L119 LiptonReduction]: Number of co-enabled transitions 3978 [2022-12-14 16:04:34,488 INFO L134 LiptonReduction]: Checked pairs total: 3351 [2022-12-14 16:04:34,488 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-12-14 16:04:34,495 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 27 transitions, 64 flow [2022-12-14 16:04:34,530 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 358 states, 234 states have (on average 4.512820512820513) internal successors, (1056), 357 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 16:04:34,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:04:34,548 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;@6027817, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:04:34,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-14 16:04:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 234 states have (on average 4.512820512820513) internal successors, (1056), 357 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 16:04:34,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 16:04:34,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:34,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 16:04:34,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash 14140852, now seen corresponding path program 1 times [2022-12-14 16:04:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:34,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760429100] [2022-12-14 16:04:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:34,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:34,690 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 16:04:34,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:34,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760429100] [2022-12-14 16:04:34,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760429100] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:34,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:04:34,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 16:04:34,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899940593] [2022-12-14 16:04:34,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:34,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 16:04:34,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 16:04:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 16:04:34,714 INFO L87 Difference]: Start difference. First operand has 358 states, 234 states have (on average 4.512820512820513) internal successors, (1056), 357 states have internal predecessors, (1056), 0 states have call successors, (0), 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 2 states, 1 states have (on average 4.0) 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 16:04:34,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:34,764 INFO L93 Difference]: Finished difference Result 229 states and 671 transitions. [2022-12-14 16:04:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 16:04:34,766 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) 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 16:04:34,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:34,778 INFO L225 Difference]: With dead ends: 229 [2022-12-14 16:04:34,778 INFO L226 Difference]: Without dead ends: 229 [2022-12-14 16:04:34,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 16:04:34,782 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:34,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:34,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-12-14 16:04:34,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-12-14 16:04:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 166 states have (on average 4.042168674698795) internal successors, (671), 228 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 16:04:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 671 transitions. [2022-12-14 16:04:34,825 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 671 transitions. Word has length 4 [2022-12-14 16:04:34,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:34,826 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 671 transitions. [2022-12-14 16:04:34,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) 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 16:04:34,826 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 671 transitions. [2022-12-14 16:04:34,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 16:04:34,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:34,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 16:04:34,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 16:04:34,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:34,827 INFO L85 PathProgramCache]: Analyzing trace with hash 14140853, now seen corresponding path program 1 times [2022-12-14 16:04:34,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:34,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846983857] [2022-12-14 16:04:34,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:34,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:34,908 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 16:04:34,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:34,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846983857] [2022-12-14 16:04:34,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846983857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:34,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:04:34,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 16:04:34,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736558559] [2022-12-14 16:04:34,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:34,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:04:34,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:34,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:04:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:04:34,911 INFO L87 Difference]: Start difference. First operand 229 states and 671 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 16:04:34,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:34,966 INFO L93 Difference]: Finished difference Result 343 states and 1007 transitions. [2022-12-14 16:04:34,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:04:34,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 16:04:34,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:34,971 INFO L225 Difference]: With dead ends: 343 [2022-12-14 16:04:34,971 INFO L226 Difference]: Without dead ends: 343 [2022-12-14 16:04:34,971 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 16:04:34,973 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:34,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-12-14 16:04:34,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 267. [2022-12-14 16:04:34,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 204 states have (on average 4.21078431372549) internal successors, (859), 266 states have internal predecessors, (859), 0 states have call successors, (0), 0 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 16:04:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 859 transitions. [2022-12-14 16:04:34,996 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 859 transitions. Word has length 4 [2022-12-14 16:04:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:34,997 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 859 transitions. [2022-12-14 16:04:34,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 16:04:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 859 transitions. [2022-12-14 16:04:34,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 16:04:34,997 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:34,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 16:04:34,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 16:04:34,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:34,998 INFO L85 PathProgramCache]: Analyzing trace with hash 14140798, now seen corresponding path program 1 times [2022-12-14 16:04:34,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:34,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767278050] [2022-12-14 16:04:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:34,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:35,061 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 16:04:35,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:35,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767278050] [2022-12-14 16:04:35,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767278050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:35,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:04:35,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 16:04:35,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433698826] [2022-12-14 16:04:35,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:35,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:04:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:35,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:04:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:04:35,063 INFO L87 Difference]: Start difference. First operand 267 states and 859 transitions. 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 16:04:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:35,112 INFO L93 Difference]: Finished difference Result 291 states and 927 transitions. [2022-12-14 16:04:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:04:35,113 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 16:04:35,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:35,116 INFO L225 Difference]: With dead ends: 291 [2022-12-14 16:04:35,116 INFO L226 Difference]: Without dead ends: 291 [2022-12-14 16:04:35,117 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 16:04:35,118 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:35,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:35,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-12-14 16:04:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2022-12-14 16:04:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 228 states have (on average 4.065789473684211) internal successors, (927), 290 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 16:04:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 927 transitions. [2022-12-14 16:04:35,135 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 927 transitions. Word has length 4 [2022-12-14 16:04:35,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:35,136 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 927 transitions. [2022-12-14 16:04:35,136 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 16:04:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 927 transitions. [2022-12-14 16:04:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 16:04:35,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:35,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 16:04:35,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 16:04:35,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash 438366894, now seen corresponding path program 1 times [2022-12-14 16:04:35,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:35,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926537331] [2022-12-14 16:04:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:35,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:35,190 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 16:04:35,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:35,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926537331] [2022-12-14 16:04:35,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926537331] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:35,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145399703] [2022-12-14 16:04:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:35,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:35,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:35,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:35,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 16:04:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:35,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 16:04:35,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:35,280 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 16:04:35,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:04:35,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145399703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:35,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:04:35,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-14 16:04:35,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660779004] [2022-12-14 16:04:35,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:35,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:04:35,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:04:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 16:04:35,281 INFO L87 Difference]: Start difference. First operand 291 states and 927 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 16:04:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:35,327 INFO L93 Difference]: Finished difference Result 313 states and 935 transitions. [2022-12-14 16:04:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:04:35,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 16:04:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:35,329 INFO L225 Difference]: With dead ends: 313 [2022-12-14 16:04:35,330 INFO L226 Difference]: Without dead ends: 313 [2022-12-14 16:04:35,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 16:04:35,331 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:35,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:35,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-12-14 16:04:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 252. [2022-12-14 16:04:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 205 states have (on average 3.9609756097560975) internal successors, (812), 251 states have internal predecessors, (812), 0 states have call successors, (0), 0 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 16:04:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 812 transitions. [2022-12-14 16:04:35,343 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 812 transitions. Word has length 5 [2022-12-14 16:04:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:35,343 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 812 transitions. [2022-12-14 16:04:35,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 16:04:35,344 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 812 transitions. [2022-12-14 16:04:35,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 16:04:35,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:35,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 16:04:35,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 16:04:35,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:35,546 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:35,546 INFO L85 PathProgramCache]: Analyzing trace with hash 438366839, now seen corresponding path program 1 times [2022-12-14 16:04:35,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:35,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513651398] [2022-12-14 16:04:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:35,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:35,708 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 16:04:35,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:35,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513651398] [2022-12-14 16:04:35,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513651398] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:35,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721447507] [2022-12-14 16:04:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:35,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:35,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:35,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:35,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 16:04:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:35,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 16:04:35,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:35,785 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 16:04:35,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:04:35,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721447507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:35,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:04:35,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-12-14 16:04:35,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093258008] [2022-12-14 16:04:35,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:35,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:04:35,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:04:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:04:35,786 INFO L87 Difference]: Start difference. First operand 252 states and 812 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:35,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:35,836 INFO L93 Difference]: Finished difference Result 255 states and 788 transitions. [2022-12-14 16:04:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:04:35,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 16:04:35,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:35,839 INFO L225 Difference]: With dead ends: 255 [2022-12-14 16:04:35,840 INFO L226 Difference]: Without dead ends: 255 [2022-12-14 16:04:35,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:04:35,840 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:35,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:35,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-12-14 16:04:35,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 184. [2022-12-14 16:04:35,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 161 states have (on average 3.5714285714285716) internal successors, (575), 183 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 16:04:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 575 transitions. [2022-12-14 16:04:35,846 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 575 transitions. Word has length 5 [2022-12-14 16:04:35,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:35,846 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 575 transitions. [2022-12-14 16:04:35,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:35,846 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 575 transitions. [2022-12-14 16:04:35,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 16:04:35,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:35,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 16:04:35,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 16:04:36,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:36,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:36,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:36,049 INFO L85 PathProgramCache]: Analyzing trace with hash 438366840, now seen corresponding path program 1 times [2022-12-14 16:04:36,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:36,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568023152] [2022-12-14 16:04:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:36,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:36,199 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 16:04:36,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:36,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568023152] [2022-12-14 16:04:36,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568023152] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:36,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139563139] [2022-12-14 16:04:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:36,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:36,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:36,202 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:36,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 16:04:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:36,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 16:04:36,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:36,283 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 16:04:36,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:36,302 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 16:04:36,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139563139] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:36,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1251138585] [2022-12-14 16:04:36,308 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:36,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:36,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-14 16:04:36,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822025344] [2022-12-14 16:04:36,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:36,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 16:04:36,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:36,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 16:04:36,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-14 16:04:36,312 INFO L87 Difference]: Start difference. First operand 184 states and 575 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:36,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:36,424 INFO L93 Difference]: Finished difference Result 360 states and 1105 transitions. [2022-12-14 16:04:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 16:04:36,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 16:04:36,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:36,427 INFO L225 Difference]: With dead ends: 360 [2022-12-14 16:04:36,427 INFO L226 Difference]: Without dead ends: 360 [2022-12-14 16:04:36,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-12-14 16:04:36,428 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:36,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:04:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-12-14 16:04:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 319. [2022-12-14 16:04:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 296 states have (on average 3.516891891891892) internal successors, (1041), 318 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 16:04:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 1041 transitions. [2022-12-14 16:04:36,440 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 1041 transitions. Word has length 5 [2022-12-14 16:04:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:36,440 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 1041 transitions. [2022-12-14 16:04:36,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 1041 transitions. [2022-12-14 16:04:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 16:04:36,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:36,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 16:04:36,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 16:04:36,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 16:04:36,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:36,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:36,642 INFO L85 PathProgramCache]: Analyzing trace with hash 706097819, now seen corresponding path program 1 times [2022-12-14 16:04:36,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:36,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504930905] [2022-12-14 16:04:36,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:36,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:36,679 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 16:04:36,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:36,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504930905] [2022-12-14 16:04:36,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504930905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:36,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:04:36,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 16:04:36,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460721843] [2022-12-14 16:04:36,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:36,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:04:36,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:36,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:04:36,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:04:36,680 INFO L87 Difference]: Start difference. First operand 319 states and 1041 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:36,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:36,710 INFO L93 Difference]: Finished difference Result 331 states and 1061 transitions. [2022-12-14 16:04:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:04:36,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 16:04:36,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:36,711 INFO L225 Difference]: With dead ends: 331 [2022-12-14 16:04:36,711 INFO L226 Difference]: Without dead ends: 331 [2022-12-14 16:04:36,712 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 16:04:36,712 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:36,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-12-14 16:04:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 313. [2022-12-14 16:04:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 290 states have (on average 3.5344827586206895) internal successors, (1025), 312 states have internal predecessors, (1025), 0 states have call successors, (0), 0 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 16:04:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 1025 transitions. [2022-12-14 16:04:36,719 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 1025 transitions. Word has length 6 [2022-12-14 16:04:36,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:36,720 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 1025 transitions. [2022-12-14 16:04:36,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 1025 transitions. [2022-12-14 16:04:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 16:04:36,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:36,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 16:04:36,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 16:04:36,720 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:36,721 INFO L85 PathProgramCache]: Analyzing trace with hash 706099903, now seen corresponding path program 1 times [2022-12-14 16:04:36,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:36,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777366617] [2022-12-14 16:04:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:36,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:36,748 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 16:04:36,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:36,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777366617] [2022-12-14 16:04:36,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777366617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:36,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:04:36,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 16:04:36,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229200267] [2022-12-14 16:04:36,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:36,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:04:36,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:36,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:04:36,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:04:36,749 INFO L87 Difference]: Start difference. First operand 313 states and 1025 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:36,779 INFO L93 Difference]: Finished difference Result 408 states and 1395 transitions. [2022-12-14 16:04:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:04:36,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 16:04:36,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:36,781 INFO L225 Difference]: With dead ends: 408 [2022-12-14 16:04:36,781 INFO L226 Difference]: Without dead ends: 408 [2022-12-14 16:04:36,781 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 16:04:36,782 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:36,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-12-14 16:04:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 362. [2022-12-14 16:04:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 339 states have (on average 3.7964601769911503) internal successors, (1287), 361 states have internal predecessors, (1287), 0 states have call successors, (0), 0 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 16:04:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1287 transitions. [2022-12-14 16:04:36,790 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1287 transitions. Word has length 6 [2022-12-14 16:04:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:36,790 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 1287 transitions. [2022-12-14 16:04:36,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1287 transitions. [2022-12-14 16:04:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 16:04:36,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:36,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 16:04:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 16:04:36,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:36,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash 706100001, now seen corresponding path program 1 times [2022-12-14 16:04:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:36,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560443081] [2022-12-14 16:04:36,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:36,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:36,813 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 16:04:36,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:36,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560443081] [2022-12-14 16:04:36,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560443081] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:36,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:04:36,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 16:04:36,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726315327] [2022-12-14 16:04:36,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:36,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:04:36,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:36,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:04:36,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:04:36,814 INFO L87 Difference]: Start difference. First operand 362 states and 1287 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:36,842 INFO L93 Difference]: Finished difference Result 362 states and 1190 transitions. [2022-12-14 16:04:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:04:36,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 16:04:36,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:36,844 INFO L225 Difference]: With dead ends: 362 [2022-12-14 16:04:36,844 INFO L226 Difference]: Without dead ends: 362 [2022-12-14 16:04:36,845 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 16:04:36,845 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:36,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-12-14 16:04:36,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2022-12-14 16:04:36,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 339 states have (on average 3.510324483775811) internal successors, (1190), 361 states have internal predecessors, (1190), 0 states have call successors, (0), 0 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 16:04:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1190 transitions. [2022-12-14 16:04:36,853 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1190 transitions. Word has length 6 [2022-12-14 16:04:36,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:36,853 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 1190 transitions. [2022-12-14 16:04:36,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:36,854 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1190 transitions. [2022-12-14 16:04:36,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 16:04:36,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:36,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:36,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 16:04:36,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:36,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:36,855 INFO L85 PathProgramCache]: Analyzing trace with hash 414196355, now seen corresponding path program 1 times [2022-12-14 16:04:36,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:36,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464774966] [2022-12-14 16:04:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:36,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:36,874 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 16:04:36,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:36,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464774966] [2022-12-14 16:04:36,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464774966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:36,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:04:36,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 16:04:36,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741208534] [2022-12-14 16:04:36,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:36,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:04:36,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:36,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:04:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:04:36,875 INFO L87 Difference]: Start difference. First operand 362 states and 1190 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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 16:04:36,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:36,895 INFO L93 Difference]: Finished difference Result 327 states and 1043 transitions. [2022-12-14 16:04:36,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:04:36,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 16:04:36,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:36,896 INFO L225 Difference]: With dead ends: 327 [2022-12-14 16:04:36,896 INFO L226 Difference]: Without dead ends: 327 [2022-12-14 16:04:36,896 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 16:04:36,897 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:36,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:36,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-12-14 16:04:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2022-12-14 16:04:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 310 states have (on average 3.3548387096774195) internal successors, (1040), 324 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 16:04:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 1040 transitions. [2022-12-14 16:04:36,913 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 1040 transitions. Word has length 7 [2022-12-14 16:04:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:36,913 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 1040 transitions. [2022-12-14 16:04:36,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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 16:04:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 1040 transitions. [2022-12-14 16:04:36,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 16:04:36,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:36,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:36,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 16:04:36,914 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:36,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 414263911, now seen corresponding path program 1 times [2022-12-14 16:04:36,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:36,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493870376] [2022-12-14 16:04:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:36,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:36,958 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 16:04:36,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:36,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493870376] [2022-12-14 16:04:36,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493870376] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:36,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580655755] [2022-12-14 16:04:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:36,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:36,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:36,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:36,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 16:04:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:37,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 16:04:37,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:37,051 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 16:04:37,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:04:37,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580655755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:37,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:04:37,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-12-14 16:04:37,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565784338] [2022-12-14 16:04:37,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:37,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:04:37,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:37,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:04:37,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:04:37,053 INFO L87 Difference]: Start difference. First operand 325 states and 1040 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 16:04:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:37,086 INFO L93 Difference]: Finished difference Result 281 states and 896 transitions. [2022-12-14 16:04:37,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:04:37,087 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 16:04:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:37,090 INFO L225 Difference]: With dead ends: 281 [2022-12-14 16:04:37,090 INFO L226 Difference]: Without dead ends: 281 [2022-12-14 16:04:37,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:04:37,091 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:37,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:37,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-12-14 16:04:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-12-14 16:04:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 270 states have (on average 3.3185185185185184) internal successors, (896), 280 states have internal predecessors, (896), 0 states have call successors, (0), 0 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 16:04:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 896 transitions. [2022-12-14 16:04:37,097 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 896 transitions. Word has length 7 [2022-12-14 16:04:37,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:37,097 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 896 transitions. [2022-12-14 16:04:37,097 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 16:04:37,097 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 896 transitions. [2022-12-14 16:04:37,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 16:04:37,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:37,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:37,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 16:04:37,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 16:04:37,298 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:37,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:37,299 INFO L85 PathProgramCache]: Analyzing trace with hash 414264009, now seen corresponding path program 1 times [2022-12-14 16:04:37,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:37,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323762442] [2022-12-14 16:04:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:37,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:37,329 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 16:04:37,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:37,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323762442] [2022-12-14 16:04:37,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323762442] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:37,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875352771] [2022-12-14 16:04:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:37,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:37,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:37,331 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:37,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 16:04:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:37,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 16:04:37,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:37,398 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 16:04:37,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:04:37,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875352771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:37,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:04:37,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-14 16:04:37,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382416385] [2022-12-14 16:04:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:37,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:04:37,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:04:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 16:04:37,400 INFO L87 Difference]: Start difference. First operand 281 states and 896 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 16:04:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:37,428 INFO L93 Difference]: Finished difference Result 237 states and 752 transitions. [2022-12-14 16:04:37,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:04:37,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 16:04:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:37,429 INFO L225 Difference]: With dead ends: 237 [2022-12-14 16:04:37,430 INFO L226 Difference]: Without dead ends: 237 [2022-12-14 16:04:37,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 16:04:37,430 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:37,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:04:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-12-14 16:04:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-12-14 16:04:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 230 states have (on average 3.2695652173913046) internal successors, (752), 236 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 16:04:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 752 transitions. [2022-12-14 16:04:37,439 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 752 transitions. Word has length 7 [2022-12-14 16:04:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:37,439 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 752 transitions. [2022-12-14 16:04:37,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 16:04:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 752 transitions. [2022-12-14 16:04:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 16:04:37,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:37,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:37,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 16:04:37,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:37,640 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash 414263979, now seen corresponding path program 1 times [2022-12-14 16:04:37,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:37,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891219414] [2022-12-14 16:04:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:37,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:37,696 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 16:04:37,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:37,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891219414] [2022-12-14 16:04:37,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891219414] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:37,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473419058] [2022-12-14 16:04:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:37,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:37,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:37,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:37,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 16:04:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:37,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 16:04:37,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:37,782 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 16:04:37,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:37,806 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 16:04:37,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473419058] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:37,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1319915923] [2022-12-14 16:04:37,807 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:37,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:37,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-14 16:04:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453478024] [2022-12-14 16:04:37,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:37,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 16:04:37,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:37,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 16:04:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-14 16:04:37,809 INFO L87 Difference]: Start difference. First operand 237 states and 752 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:37,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:37,879 INFO L93 Difference]: Finished difference Result 486 states and 1580 transitions. [2022-12-14 16:04:37,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 16:04:37,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 16:04:37,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:37,882 INFO L225 Difference]: With dead ends: 486 [2022-12-14 16:04:37,883 INFO L226 Difference]: Without dead ends: 486 [2022-12-14 16:04:37,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-12-14 16:04:37,883 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:37,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:04:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-12-14 16:04:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 369. [2022-12-14 16:04:37,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 362 states have (on average 3.6270718232044197) internal successors, (1313), 368 states have internal predecessors, (1313), 0 states have call successors, (0), 0 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 16:04:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1313 transitions. [2022-12-14 16:04:37,897 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1313 transitions. Word has length 7 [2022-12-14 16:04:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:37,897 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 1313 transitions. [2022-12-14 16:04:37,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:37,897 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1313 transitions. [2022-12-14 16:04:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 16:04:37,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:37,898 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:37,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 16:04:38,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:38,098 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:38,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash -44814483, now seen corresponding path program 1 times [2022-12-14 16:04:38,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:38,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454793560] [2022-12-14 16:04:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:38,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:38,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:38,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454793560] [2022-12-14 16:04:38,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454793560] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:38,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416957344] [2022-12-14 16:04:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:38,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:38,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:38,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:38,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 16:04:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:38,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 16:04:38,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:38,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:38,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416957344] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:38,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2069255138] [2022-12-14 16:04:38,289 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:38,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:38,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-14 16:04:38,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579072052] [2022-12-14 16:04:38,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:38,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 16:04:38,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:38,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 16:04:38,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-12-14 16:04:38,290 INFO L87 Difference]: Start difference. First operand 369 states and 1313 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 16:04:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:38,408 INFO L93 Difference]: Finished difference Result 620 states and 2170 transitions. [2022-12-14 16:04:38,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 16:04:38,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 8 [2022-12-14 16:04:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:38,413 INFO L225 Difference]: With dead ends: 620 [2022-12-14 16:04:38,413 INFO L226 Difference]: Without dead ends: 620 [2022-12-14 16:04:38,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-12-14 16:04:38,413 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:38,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:04:38,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-12-14 16:04:38,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 479. [2022-12-14 16:04:38,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 472 states have (on average 3.7436440677966103) internal successors, (1767), 478 states have internal predecessors, (1767), 0 states have call successors, (0), 0 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 16:04:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1767 transitions. [2022-12-14 16:04:38,425 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1767 transitions. Word has length 8 [2022-12-14 16:04:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:38,425 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 1767 transitions. [2022-12-14 16:04:38,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 16:04:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1767 transitions. [2022-12-14 16:04:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 16:04:38,426 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:38,426 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-12-14 16:04:38,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 16:04:38,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 16:04:38,626 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:38,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:38,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1606960193, now seen corresponding path program 2 times [2022-12-14 16:04:38,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:38,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474782355] [2022-12-14 16:04:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:38,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:38,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:38,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474782355] [2022-12-14 16:04:38,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474782355] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:38,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778631585] [2022-12-14 16:04:38,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:04:38,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:38,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:38,691 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:38,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 16:04:38,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 16:04:38,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:38,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 16:04:38,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:38,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:38,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778631585] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:38,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1458235900] [2022-12-14 16:04:38,873 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:38,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:38,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-14 16:04:38,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947617046] [2022-12-14 16:04:38,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:38,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 16:04:38,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 16:04:38,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-14 16:04:38,875 INFO L87 Difference]: Start difference. First operand 479 states and 1767 transitions. Second operand has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 16:04:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:39,169 INFO L93 Difference]: Finished difference Result 929 states and 3238 transitions. [2022-12-14 16:04:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 16:04:39,169 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 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 8 [2022-12-14 16:04:39,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:39,173 INFO L225 Difference]: With dead ends: 929 [2022-12-14 16:04:39,173 INFO L226 Difference]: Without dead ends: 929 [2022-12-14 16:04:39,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2022-12-14 16:04:39,173 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 216 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:39,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 0 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:04:39,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-12-14 16:04:39,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 683. [2022-12-14 16:04:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 676 states have (on average 3.834319526627219) internal successors, (2592), 682 states have internal predecessors, (2592), 0 states have call successors, (0), 0 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 16:04:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 2592 transitions. [2022-12-14 16:04:39,191 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 2592 transitions. Word has length 8 [2022-12-14 16:04:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:39,191 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 2592 transitions. [2022-12-14 16:04:39,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 16:04:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 2592 transitions. [2022-12-14 16:04:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 16:04:39,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:39,192 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:39,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 16:04:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:39,393 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:39,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1898505475, now seen corresponding path program 2 times [2022-12-14 16:04:39,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:39,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896852018] [2022-12-14 16:04:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:39,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:39,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896852018] [2022-12-14 16:04:39,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896852018] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:39,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040697409] [2022-12-14 16:04:39,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:04:39,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:39,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:39,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:39,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 16:04:39,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 16:04:39,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:39,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 16:04:39,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:39,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:39,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040697409] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:39,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493073172] [2022-12-14 16:04:39,685 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:39,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:39,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-14 16:04:39,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22259496] [2022-12-14 16:04:39,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:39,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 16:04:39,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:39,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 16:04:39,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-14 16:04:39,686 INFO L87 Difference]: Start difference. First operand 683 states and 2592 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 16:04:39,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:39,900 INFO L93 Difference]: Finished difference Result 1832 states and 6450 transitions. [2022-12-14 16:04:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 16:04:39,901 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 16:04:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:39,909 INFO L225 Difference]: With dead ends: 1832 [2022-12-14 16:04:39,909 INFO L226 Difference]: Without dead ends: 1832 [2022-12-14 16:04:39,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=258, Unknown=0, NotChecked=0, Total=420 [2022-12-14 16:04:39,909 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 264 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:39,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 0 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:04:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2022-12-14 16:04:39,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1175. [2022-12-14 16:04:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1168 states have (on average 4.10445205479452) internal successors, (4794), 1174 states have internal predecessors, (4794), 0 states have call successors, (0), 0 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 16:04:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 4794 transitions. [2022-12-14 16:04:39,938 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 4794 transitions. Word has length 10 [2022-12-14 16:04:39,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:39,938 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 4794 transitions. [2022-12-14 16:04:39,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 16:04:39,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 4794 transitions. [2022-12-14 16:04:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 16:04:39,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:39,939 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:39,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 16:04:40,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:40,139 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:40,139 INFO L85 PathProgramCache]: Analyzing trace with hash 668315950, now seen corresponding path program 1 times [2022-12-14 16:04:40,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:40,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392958038] [2022-12-14 16:04:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:40,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:40,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392958038] [2022-12-14 16:04:40,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392958038] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:40,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136408334] [2022-12-14 16:04:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:40,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:40,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:40,206 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:40,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 16:04:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:40,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 16:04:40,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:40,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:40,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136408334] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:40,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1469897329] [2022-12-14 16:04:40,381 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:40,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:40,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-14 16:04:40,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485775967] [2022-12-14 16:04:40,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:40,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 16:04:40,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:40,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 16:04:40,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=169, Unknown=0, NotChecked=0, Total=272 [2022-12-14 16:04:40,383 INFO L87 Difference]: Start difference. First operand 1175 states and 4794 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 16:04:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:40,669 INFO L93 Difference]: Finished difference Result 2110 states and 8140 transitions. [2022-12-14 16:04:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 16:04:40,670 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 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 16:04:40,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:40,677 INFO L225 Difference]: With dead ends: 2110 [2022-12-14 16:04:40,677 INFO L226 Difference]: Without dead ends: 2110 [2022-12-14 16:04:40,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=248, Invalid=352, Unknown=0, NotChecked=0, Total=600 [2022-12-14 16:04:40,678 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 180 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:40,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 0 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:04:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-12-14 16:04:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1483. [2022-12-14 16:04:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1476 states have (on average 4.18360433604336) internal successors, (6175), 1482 states have internal predecessors, (6175), 0 states have call successors, (0), 0 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 16:04:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 6175 transitions. [2022-12-14 16:04:40,714 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 6175 transitions. Word has length 11 [2022-12-14 16:04:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:40,714 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 6175 transitions. [2022-12-14 16:04:40,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 16:04:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 6175 transitions. [2022-12-14 16:04:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 16:04:40,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:40,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:40,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 16:04:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 16:04:40,916 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:40,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:40,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1216522335, now seen corresponding path program 2 times [2022-12-14 16:04:40,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:40,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686010696] [2022-12-14 16:04:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:40,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:41,085 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 16:04:41,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:41,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686010696] [2022-12-14 16:04:41,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686010696] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:41,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3125665] [2022-12-14 16:04:41,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:04:41,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:41,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:41,087 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:41,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 16:04:41,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 16:04:41,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:41,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 16:04:41,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:41,204 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 16:04:41,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:41,258 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 16:04:41,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3125665] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:41,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1429582001] [2022-12-14 16:04:41,259 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:41,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:41,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-14 16:04:41,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995727547] [2022-12-14 16:04:41,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:41,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 16:04:41,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:41,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 16:04:41,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2022-12-14 16:04:41,261 INFO L87 Difference]: Start difference. First operand 1483 states and 6175 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 16:04:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:41,597 INFO L93 Difference]: Finished difference Result 2899 states and 11494 transitions. [2022-12-14 16:04:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 16:04:41,597 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 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 16:04:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:41,607 INFO L225 Difference]: With dead ends: 2899 [2022-12-14 16:04:41,607 INFO L226 Difference]: Without dead ends: 2899 [2022-12-14 16:04:41,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=293, Invalid=463, Unknown=0, NotChecked=0, Total=756 [2022-12-14 16:04:41,608 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 260 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:41,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 0 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:04:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2022-12-14 16:04:41,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1920. [2022-12-14 16:04:41,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1913 states have (on average 4.446941975953999) internal successors, (8507), 1919 states have internal predecessors, (8507), 0 states have call successors, (0), 0 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 16:04:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 8507 transitions. [2022-12-14 16:04:41,653 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 8507 transitions. Word has length 11 [2022-12-14 16:04:41,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:41,653 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 8507 transitions. [2022-12-14 16:04:41,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 16:04:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 8507 transitions. [2022-12-14 16:04:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 16:04:41,654 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:41,654 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:41,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 16:04:41,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 16:04:41,855 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:41,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:41,855 INFO L85 PathProgramCache]: Analyzing trace with hash 947132710, now seen corresponding path program 3 times [2022-12-14 16:04:41,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:41,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112738058] [2022-12-14 16:04:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:41,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:41,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:41,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112738058] [2022-12-14 16:04:41,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112738058] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:41,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522871535] [2022-12-14 16:04:41,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:04:41,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:41,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:41,979 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:41,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 16:04:42,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:04:42,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:42,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 16:04:42,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:42,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:42,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522871535] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:42,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1155222256] [2022-12-14 16:04:42,182 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:42,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:42,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-14 16:04:42,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664718322] [2022-12-14 16:04:42,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:42,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 16:04:42,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:42,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 16:04:42,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2022-12-14 16:04:42,183 INFO L87 Difference]: Start difference. First operand 1920 states and 8507 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:42,550 INFO L93 Difference]: Finished difference Result 3429 states and 13967 transitions. [2022-12-14 16:04:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 16:04:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 16:04:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:42,562 INFO L225 Difference]: With dead ends: 3429 [2022-12-14 16:04:42,562 INFO L226 Difference]: Without dead ends: 3429 [2022-12-14 16:04:42,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=368, Invalid=562, Unknown=0, NotChecked=0, Total=930 [2022-12-14 16:04:42,563 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 355 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:42,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 0 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:04:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2022-12-14 16:04:42,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2190. [2022-12-14 16:04:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 2183 states have (on average 4.549702244617499) internal successors, (9932), 2189 states have internal predecessors, (9932), 0 states have call successors, (0), 0 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 16:04:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 9932 transitions. [2022-12-14 16:04:42,610 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 9932 transitions. Word has length 12 [2022-12-14 16:04:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:42,611 INFO L495 AbstractCegarLoop]: Abstraction has 2190 states and 9932 transitions. [2022-12-14 16:04:42,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:42,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 9932 transitions. [2022-12-14 16:04:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 16:04:42,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:42,612 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:42,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 16:04:42,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:42,813 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:42,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:42,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1932604587, now seen corresponding path program 2 times [2022-12-14 16:04:42,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:42,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001680976] [2022-12-14 16:04:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:42,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:42,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:42,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001680976] [2022-12-14 16:04:42,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001680976] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:42,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240473858] [2022-12-14 16:04:42,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:04:42,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:42,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:42,944 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:42,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 16:04:43,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 16:04:43,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:43,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 16:04:43,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:43,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:04:43,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240473858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:43,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:04:43,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 17 [2022-12-14 16:04:43,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526666122] [2022-12-14 16:04:43,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:43,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 16:04:43,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 16:04:43,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-12-14 16:04:43,075 INFO L87 Difference]: Start difference. First operand 2190 states and 9932 transitions. Second operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:43,184 INFO L93 Difference]: Finished difference Result 3614 states and 16353 transitions. [2022-12-14 16:04:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 16:04:43,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 16:04:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:43,197 INFO L225 Difference]: With dead ends: 3614 [2022-12-14 16:04:43,197 INFO L226 Difference]: Without dead ends: 3608 [2022-12-14 16:04:43,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-12-14 16:04:43,198 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:43,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:04:43,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2022-12-14 16:04:43,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3217. [2022-12-14 16:04:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3217 states, 3210 states have (on average 4.699688473520249) internal successors, (15086), 3216 states have internal predecessors, (15086), 0 states have call successors, (0), 0 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 16:04:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 15086 transitions. [2022-12-14 16:04:43,270 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 15086 transitions. Word has length 13 [2022-12-14 16:04:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:43,270 INFO L495 AbstractCegarLoop]: Abstraction has 3217 states and 15086 transitions. [2022-12-14 16:04:43,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:43,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 15086 transitions. [2022-12-14 16:04:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 16:04:43,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:43,272 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:43,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 16:04:43,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:43,473 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:43,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:43,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1934565833, now seen corresponding path program 4 times [2022-12-14 16:04:43,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:43,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122573381] [2022-12-14 16:04:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:43,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:43,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:43,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122573381] [2022-12-14 16:04:43,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122573381] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:43,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167695531] [2022-12-14 16:04:43,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:04:43,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:43,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:43,591 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:43,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 16:04:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:43,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 16:04:43,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:43,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:43,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167695531] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:43,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1602959645] [2022-12-14 16:04:43,856 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:43,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:43,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-14 16:04:43,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467476802] [2022-12-14 16:04:43,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:43,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 16:04:43,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:43,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 16:04:43,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2022-12-14 16:04:43,858 INFO L87 Difference]: Start difference. First operand 3217 states and 15086 transitions. Second operand has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 16:04:44,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:44,262 INFO L93 Difference]: Finished difference Result 5982 states and 25611 transitions. [2022-12-14 16:04:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 16:04:44,263 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 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 13 [2022-12-14 16:04:44,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:44,279 INFO L225 Difference]: With dead ends: 5982 [2022-12-14 16:04:44,279 INFO L226 Difference]: Without dead ends: 5958 [2022-12-14 16:04:44,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=764, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 16:04:44,280 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 413 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:44,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 0 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:04:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5958 states. [2022-12-14 16:04:44,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5958 to 3454. [2022-12-14 16:04:44,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3447 states have (on average 4.800116042935886) internal successors, (16546), 3453 states have internal predecessors, (16546), 0 states have call successors, (0), 0 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 16:04:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 16546 transitions. [2022-12-14 16:04:44,371 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 16546 transitions. Word has length 13 [2022-12-14 16:04:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:44,372 INFO L495 AbstractCegarLoop]: Abstraction has 3454 states and 16546 transitions. [2022-12-14 16:04:44,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 16:04:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 16546 transitions. [2022-12-14 16:04:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 16:04:44,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:44,373 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:44,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 16:04:44,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 16:04:44,575 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:44,575 INFO L85 PathProgramCache]: Analyzing trace with hash -235010679, now seen corresponding path program 5 times [2022-12-14 16:04:44,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:44,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398245303] [2022-12-14 16:04:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:44,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:44,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398245303] [2022-12-14 16:04:44,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398245303] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:44,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248750852] [2022-12-14 16:04:44,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:04:44,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:44,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:44,664 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:44,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 16:04:44,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 16:04:44,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:44,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 16:04:44,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:44,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:44,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248750852] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:44,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [791613260] [2022-12-14 16:04:44,901 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:44,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:44,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-14 16:04:44,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86239298] [2022-12-14 16:04:44,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:44,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 16:04:44,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:44,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 16:04:44,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-12-14 16:04:44,903 INFO L87 Difference]: Start difference. First operand 3454 states and 16546 transitions. Second operand has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 16:04:45,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:45,497 INFO L93 Difference]: Finished difference Result 8270 states and 35462 transitions. [2022-12-14 16:04:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 16:04:45,497 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 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 13 [2022-12-14 16:04:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:45,517 INFO L225 Difference]: With dead ends: 8270 [2022-12-14 16:04:45,517 INFO L226 Difference]: Without dead ends: 8224 [2022-12-14 16:04:45,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=640, Invalid=1082, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 16:04:45,517 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 595 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:45,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 0 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 16:04:45,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8224 states. [2022-12-14 16:04:45,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8224 to 4019. [2022-12-14 16:04:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4019 states, 4012 states have (on average 4.881106679960119) internal successors, (19583), 4018 states have internal predecessors, (19583), 0 states have call successors, (0), 0 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 16:04:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 19583 transitions. [2022-12-14 16:04:45,627 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 19583 transitions. Word has length 13 [2022-12-14 16:04:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:45,627 INFO L495 AbstractCegarLoop]: Abstraction has 4019 states and 19583 transitions. [2022-12-14 16:04:45,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 16:04:45,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 19583 transitions. [2022-12-14 16:04:45,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 16:04:45,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:45,629 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:45,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 16:04:45,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:45,830 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:45,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:45,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1916400641, now seen corresponding path program 6 times [2022-12-14 16:04:45,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:45,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25403105] [2022-12-14 16:04:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:45,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:45,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:45,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25403105] [2022-12-14 16:04:45,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25403105] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:45,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188004134] [2022-12-14 16:04:45,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:04:45,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:45,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:45,947 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:45,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 16:04:46,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:04:46,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:46,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 16:04:46,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:46,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:46,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188004134] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:46,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2125564665] [2022-12-14 16:04:46,242 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:46,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:46,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-14 16:04:46,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126449254] [2022-12-14 16:04:46,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:46,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 16:04:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 16:04:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2022-12-14 16:04:46,244 INFO L87 Difference]: Start difference. First operand 4019 states and 19583 transitions. Second operand has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 16:04:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:46,958 INFO L93 Difference]: Finished difference Result 9531 states and 41517 transitions. [2022-12-14 16:04:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 16:04:46,958 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 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 16:04:46,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:46,980 INFO L225 Difference]: With dead ends: 9531 [2022-12-14 16:04:46,980 INFO L226 Difference]: Without dead ends: 9517 [2022-12-14 16:04:46,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=820, Invalid=1436, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 16:04:46,981 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 612 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:46,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 0 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 16:04:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9517 states. [2022-12-14 16:04:47,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9517 to 5410. [2022-12-14 16:04:47,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5410 states, 5403 states have (on average 4.99204145844901) internal successors, (26972), 5409 states have internal predecessors, (26972), 0 states have call successors, (0), 0 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 16:04:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 26972 transitions. [2022-12-14 16:04:47,113 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 26972 transitions. Word has length 14 [2022-12-14 16:04:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:47,113 INFO L495 AbstractCegarLoop]: Abstraction has 5410 states and 26972 transitions. [2022-12-14 16:04:47,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 16:04:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 26972 transitions. [2022-12-14 16:04:47,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 16:04:47,116 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:47,116 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:47,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 16:04:47,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 16:04:47,318 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:47,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash -619553269, now seen corresponding path program 7 times [2022-12-14 16:04:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:47,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571320000] [2022-12-14 16:04:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:47,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:47,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571320000] [2022-12-14 16:04:47,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571320000] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:47,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440018659] [2022-12-14 16:04:47,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:04:47,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:47,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:47,420 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:47,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 16:04:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:47,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 16:04:47,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:47,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:47,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440018659] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:47,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1726608771] [2022-12-14 16:04:47,690 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:47,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:47,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-14 16:04:47,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733673973] [2022-12-14 16:04:47,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:47,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 16:04:47,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 16:04:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2022-12-14 16:04:47,692 INFO L87 Difference]: Start difference. First operand 5410 states and 26972 transitions. Second operand has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 16:04:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:48,840 INFO L93 Difference]: Finished difference Result 12012 states and 53206 transitions. [2022-12-14 16:04:48,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 16:04:48,842 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 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 16:04:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:48,871 INFO L225 Difference]: With dead ends: 12012 [2022-12-14 16:04:48,871 INFO L226 Difference]: Without dead ends: 11947 [2022-12-14 16:04:48,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1243, Invalid=2297, Unknown=0, NotChecked=0, Total=3540 [2022-12-14 16:04:48,872 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 726 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:48,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 0 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 16:04:48,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11947 states. [2022-12-14 16:04:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11947 to 6555. [2022-12-14 16:04:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6555 states, 6548 states have (on average 5.12400733048259) internal successors, (33552), 6554 states have internal predecessors, (33552), 0 states have call successors, (0), 0 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 16:04:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6555 states to 6555 states and 33552 transitions. [2022-12-14 16:04:49,100 INFO L78 Accepts]: Start accepts. Automaton has 6555 states and 33552 transitions. Word has length 14 [2022-12-14 16:04:49,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:49,100 INFO L495 AbstractCegarLoop]: Abstraction has 6555 states and 33552 transitions. [2022-12-14 16:04:49,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 16:04:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 6555 states and 33552 transitions. [2022-12-14 16:04:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 16:04:49,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:49,104 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:49,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 16:04:49,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 16:04:49,305 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:49,306 INFO L85 PathProgramCache]: Analyzing trace with hash -619404159, now seen corresponding path program 8 times [2022-12-14 16:04:49,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:49,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068756836] [2022-12-14 16:04:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:49,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:49,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068756836] [2022-12-14 16:04:49,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068756836] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:49,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144096902] [2022-12-14 16:04:49,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:04:49,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:49,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:49,399 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:49,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 16:04:49,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 16:04:49,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:49,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 16:04:49,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:49,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:49,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144096902] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:49,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1888736005] [2022-12-14 16:04:49,687 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:49,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:49,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-14 16:04:49,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489658215] [2022-12-14 16:04:49,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:49,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 16:04:49,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:49,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 16:04:49,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2022-12-14 16:04:49,689 INFO L87 Difference]: Start difference. First operand 6555 states and 33552 transitions. Second operand has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 16:04:50,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:50,751 INFO L93 Difference]: Finished difference Result 14379 states and 65495 transitions. [2022-12-14 16:04:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-14 16:04:50,752 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 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 16:04:50,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:50,789 INFO L225 Difference]: With dead ends: 14379 [2022-12-14 16:04:50,789 INFO L226 Difference]: Without dead ends: 14371 [2022-12-14 16:04:50,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1058, Invalid=1804, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 16:04:50,790 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 789 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:50,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 0 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 16:04:50,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14371 states. [2022-12-14 16:04:50,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14371 to 8480. [2022-12-14 16:04:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8480 states, 8473 states have (on average 5.2561076360203) internal successors, (44535), 8479 states have internal predecessors, (44535), 0 states have call successors, (0), 0 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 16:04:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 44535 transitions. [2022-12-14 16:04:51,026 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 44535 transitions. Word has length 14 [2022-12-14 16:04:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:51,026 INFO L495 AbstractCegarLoop]: Abstraction has 8480 states and 44535 transitions. [2022-12-14 16:04:51,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 16:04:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 44535 transitions. [2022-12-14 16:04:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 16:04:51,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:51,029 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-12-14 16:04:51,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 16:04:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:51,230 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1138168095, now seen corresponding path program 3 times [2022-12-14 16:04:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:51,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394011652] [2022-12-14 16:04:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:51,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:51,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:51,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394011652] [2022-12-14 16:04:51,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394011652] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:51,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817545288] [2022-12-14 16:04:51,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:04:51,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:51,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:51,368 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:51,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 16:04:51,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:04:51,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:51,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 16:04:51,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 16:04:51,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:04:51,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817545288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:04:51,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:04:51,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 21 [2022-12-14 16:04:51,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246045715] [2022-12-14 16:04:51,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:04:51,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 16:04:51,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:51,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 16:04:51,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2022-12-14 16:04:51,500 INFO L87 Difference]: Start difference. First operand 8480 states and 44535 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:51,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:51,749 INFO L93 Difference]: Finished difference Result 13254 states and 68737 transitions. [2022-12-14 16:04:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 16:04:51,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 16:04:51,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:51,803 INFO L225 Difference]: With dead ends: 13254 [2022-12-14 16:04:51,803 INFO L226 Difference]: Without dead ends: 13207 [2022-12-14 16:04:51,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2022-12-14 16:04:51,804 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:51,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 16:04:51,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13207 states. [2022-12-14 16:04:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13207 to 11303. [2022-12-14 16:04:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11303 states, 11296 states have (on average 5.290722379603399) internal successors, (59764), 11302 states have internal predecessors, (59764), 0 states have call successors, (0), 0 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 16:04:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11303 states to 11303 states and 59764 transitions. [2022-12-14 16:04:52,127 INFO L78 Accepts]: Start accepts. Automaton has 11303 states and 59764 transitions. Word has length 14 [2022-12-14 16:04:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:52,128 INFO L495 AbstractCegarLoop]: Abstraction has 11303 states and 59764 transitions. [2022-12-14 16:04:52,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:04:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 11303 states and 59764 transitions. [2022-12-14 16:04:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 16:04:52,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:52,131 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:52,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 16:04:52,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 16:04:52,332 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:52,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:52,333 INFO L85 PathProgramCache]: Analyzing trace with hash -109479090, now seen corresponding path program 9 times [2022-12-14 16:04:52,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:52,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356964412] [2022-12-14 16:04:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:52,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:52,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:52,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356964412] [2022-12-14 16:04:52,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356964412] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:52,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031513512] [2022-12-14 16:04:52,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:04:52,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:52,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:52,448 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:52,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 16:04:52,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:04:52,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:52,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 16:04:52,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:52,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:52,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031513512] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:52,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1095528121] [2022-12-14 16:04:52,745 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:52,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:52,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-14 16:04:52,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346949419] [2022-12-14 16:04:52,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:52,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 16:04:52,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:52,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 16:04:52,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=545, Unknown=0, NotChecked=0, Total=812 [2022-12-14 16:04:52,747 INFO L87 Difference]: Start difference. First operand 11303 states and 59764 transitions. Second operand has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 16:04:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:53,710 INFO L93 Difference]: Finished difference Result 21176 states and 99136 transitions. [2022-12-14 16:04:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-14 16:04:53,711 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 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 15 [2022-12-14 16:04:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:53,792 INFO L225 Difference]: With dead ends: 21176 [2022-12-14 16:04:53,792 INFO L226 Difference]: Without dead ends: 21119 [2022-12-14 16:04:53,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1082, Invalid=1780, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 16:04:53,793 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 677 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:53,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 0 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 16:04:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21119 states. [2022-12-14 16:04:54,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21119 to 13031. [2022-12-14 16:04:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13031 states, 13024 states have (on average 5.297988329238329) internal successors, (69001), 13030 states have internal predecessors, (69001), 0 states have call successors, (0), 0 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 16:04:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13031 states to 13031 states and 69001 transitions. [2022-12-14 16:04:54,201 INFO L78 Accepts]: Start accepts. Automaton has 13031 states and 69001 transitions. Word has length 15 [2022-12-14 16:04:54,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:54,231 INFO L495 AbstractCegarLoop]: Abstraction has 13031 states and 69001 transitions. [2022-12-14 16:04:54,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 16:04:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 13031 states and 69001 transitions. [2022-12-14 16:04:54,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 16:04:54,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:54,237 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:54,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 16:04:54,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:54,438 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:54,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:54,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1649688366, now seen corresponding path program 10 times [2022-12-14 16:04:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:54,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597774700] [2022-12-14 16:04:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:54,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:54,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:54,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597774700] [2022-12-14 16:04:54,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597774700] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:54,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685009905] [2022-12-14 16:04:54,559 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:04:54,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:54,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:54,560 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:54,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 16:04:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:54,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 16:04:54,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:54,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:54,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685009905] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:54,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742866805] [2022-12-14 16:04:54,819 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:54,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:54,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-14 16:04:54,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955034305] [2022-12-14 16:04:54,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:54,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 16:04:54,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 16:04:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2022-12-14 16:04:54,821 INFO L87 Difference]: Start difference. First operand 13031 states and 69001 transitions. Second operand has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 16:04:56,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:56,045 INFO L93 Difference]: Finished difference Result 25578 states and 120437 transitions. [2022-12-14 16:04:56,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 16:04:56,046 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 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 15 [2022-12-14 16:04:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:56,127 INFO L225 Difference]: With dead ends: 25578 [2022-12-14 16:04:56,127 INFO L226 Difference]: Without dead ends: 25449 [2022-12-14 16:04:56,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1384, Invalid=2522, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 16:04:56,128 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 923 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:56,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 0 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 16:04:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25449 states. [2022-12-14 16:04:56,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25449 to 14456. [2022-12-14 16:04:56,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14456 states, 14449 states have (on average 5.313239670565437) internal successors, (76771), 14455 states have internal predecessors, (76771), 0 states have call successors, (0), 0 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 16:04:56,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14456 states to 14456 states and 76771 transitions. [2022-12-14 16:04:56,710 INFO L78 Accepts]: Start accepts. Automaton has 14456 states and 76771 transitions. Word has length 15 [2022-12-14 16:04:56,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:56,710 INFO L495 AbstractCegarLoop]: Abstraction has 14456 states and 76771 transitions. [2022-12-14 16:04:56,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 16:04:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 14456 states and 76771 transitions. [2022-12-14 16:04:56,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 16:04:56,717 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:56,717 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:56,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 16:04:56,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 16:04:56,918 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:56,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1759612137, now seen corresponding path program 11 times [2022-12-14 16:04:56,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:56,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016904107] [2022-12-14 16:04:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:56,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:57,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:57,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016904107] [2022-12-14 16:04:57,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016904107] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:57,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342863287] [2022-12-14 16:04:57,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:04:57,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:57,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:57,060 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:57,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 16:04:57,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 16:04:57,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:57,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 16:04:57,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:57,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:57,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342863287] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:57,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [379194303] [2022-12-14 16:04:57,358 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:57,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:57,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-14 16:04:57,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430064001] [2022-12-14 16:04:57,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:57,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 16:04:57,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 16:04:57,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2022-12-14 16:04:57,360 INFO L87 Difference]: Start difference. First operand 14456 states and 76771 transitions. Second operand has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 16:04:58,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:04:58,436 INFO L93 Difference]: Finished difference Result 21724 states and 104757 transitions. [2022-12-14 16:04:58,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 16:04:58,437 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 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 15 [2022-12-14 16:04:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:04:58,512 INFO L225 Difference]: With dead ends: 21724 [2022-12-14 16:04:58,512 INFO L226 Difference]: Without dead ends: 21608 [2022-12-14 16:04:58,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=892, Invalid=1460, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 16:04:58,513 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 752 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 16:04:58,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 0 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 16:04:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21608 states. [2022-12-14 16:04:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21608 to 15146. [2022-12-14 16:04:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15146 states, 15139 states have (on average 5.313494946826078) internal successors, (80441), 15145 states have internal predecessors, (80441), 0 states have call successors, (0), 0 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 16:04:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15146 states to 15146 states and 80441 transitions. [2022-12-14 16:04:58,942 INFO L78 Accepts]: Start accepts. Automaton has 15146 states and 80441 transitions. Word has length 15 [2022-12-14 16:04:58,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:04:58,943 INFO L495 AbstractCegarLoop]: Abstraction has 15146 states and 80441 transitions. [2022-12-14 16:04:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 16:04:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 15146 states and 80441 transitions. [2022-12-14 16:04:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 16:04:58,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:04:58,948 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:04:58,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-14 16:04:59,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 16:04:59,150 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:04:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:04:59,151 INFO L85 PathProgramCache]: Analyzing trace with hash -880490197, now seen corresponding path program 12 times [2022-12-14 16:04:59,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:04:59,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299074805] [2022-12-14 16:04:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:59,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:04:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:59,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:04:59,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299074805] [2022-12-14 16:04:59,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299074805] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:04:59,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029035134] [2022-12-14 16:04:59,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:04:59,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:04:59,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:59,300 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:04:59,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 16:04:59,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:04:59,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:04:59,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 16:04:59,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:04:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:59,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:59,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029035134] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:59,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [576219123] [2022-12-14 16:04:59,638 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:04:59,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:59,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-14 16:04:59,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128908604] [2022-12-14 16:04:59,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:59,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 16:04:59,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 16:04:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=693, Unknown=0, NotChecked=0, Total=992 [2022-12-14 16:04:59,640 INFO L87 Difference]: Start difference. First operand 15146 states and 80441 transitions. Second operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:01,155 INFO L93 Difference]: Finished difference Result 31401 states and 147964 transitions. [2022-12-14 16:05:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 16:05:01,156 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 16:05:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:01,263 INFO L225 Difference]: With dead ends: 31401 [2022-12-14 16:05:01,263 INFO L226 Difference]: Without dead ends: 31256 [2022-12-14 16:05:01,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1542, Invalid=2748, Unknown=0, NotChecked=0, Total=4290 [2022-12-14 16:05:01,265 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1473 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:01,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 0 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:05:01,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31256 states. [2022-12-14 16:05:01,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31256 to 15225. [2022-12-14 16:05:01,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15225 states, 15218 states have (on average 5.294716782757261) internal successors, (80575), 15224 states have internal predecessors, (80575), 0 states have call successors, (0), 0 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 16:05:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15225 states to 15225 states and 80575 transitions. [2022-12-14 16:05:01,757 INFO L78 Accepts]: Start accepts. Automaton has 15225 states and 80575 transitions. Word has length 16 [2022-12-14 16:05:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:01,758 INFO L495 AbstractCegarLoop]: Abstraction has 15225 states and 80575 transitions. [2022-12-14 16:05:01,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 15225 states and 80575 transitions. [2022-12-14 16:05:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 16:05:01,763 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:01,763 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:01,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-14 16:05:01,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:01,965 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:01,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:01,966 INFO L85 PathProgramCache]: Analyzing trace with hash -404037748, now seen corresponding path program 1 times [2022-12-14 16:05:01,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:01,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247061095] [2022-12-14 16:05:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:01,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:02,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:02,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247061095] [2022-12-14 16:05:02,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247061095] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:02,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588018774] [2022-12-14 16:05:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:02,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:02,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:02,089 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:02,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-14 16:05:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:02,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 16:05:02,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:02,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:02,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588018774] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:02,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [983730627] [2022-12-14 16:05:02,426 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:02,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:02,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-14 16:05:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244758009] [2022-12-14 16:05:02,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:02,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 16:05:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:02,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 16:05:02,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2022-12-14 16:05:02,427 INFO L87 Difference]: Start difference. First operand 15225 states and 80575 transitions. Second operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:03,849 INFO L93 Difference]: Finished difference Result 23249 states and 110374 transitions. [2022-12-14 16:05:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 16:05:03,849 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 16:05:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:03,939 INFO L225 Difference]: With dead ends: 23249 [2022-12-14 16:05:03,940 INFO L226 Difference]: Without dead ends: 23220 [2022-12-14 16:05:03,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1502, Invalid=2788, Unknown=0, NotChecked=0, Total=4290 [2022-12-14 16:05:03,941 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1085 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:03,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 0 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:05:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23220 states. [2022-12-14 16:05:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23220 to 15343. [2022-12-14 16:05:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15343 states, 15336 states have (on average 5.2979916536254565) internal successors, (81250), 15342 states have internal predecessors, (81250), 0 states have call successors, (0), 0 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 16:05:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15343 states to 15343 states and 81250 transitions. [2022-12-14 16:05:04,523 INFO L78 Accepts]: Start accepts. Automaton has 15343 states and 81250 transitions. Word has length 16 [2022-12-14 16:05:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:04,523 INFO L495 AbstractCegarLoop]: Abstraction has 15343 states and 81250 transitions. [2022-12-14 16:05:04,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 15343 states and 81250 transitions. [2022-12-14 16:05:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 16:05:04,533 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:04,533 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:04,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-14 16:05:04,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-14 16:05:04,734 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:04,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1467270110, now seen corresponding path program 2 times [2022-12-14 16:05:04,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:04,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592987136] [2022-12-14 16:05:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:04,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:04,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592987136] [2022-12-14 16:05:04,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592987136] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:04,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073795971] [2022-12-14 16:05:04,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:05:04,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:04,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:04,888 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:04,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-14 16:05:04,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 16:05:04,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:04,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 16:05:04,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:05,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:05,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073795971] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:05,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2097978677] [2022-12-14 16:05:05,222 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:05,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:05,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-14 16:05:05,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674644057] [2022-12-14 16:05:05,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:05,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 16:05:05,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:05,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 16:05:05,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-12-14 16:05:05,224 INFO L87 Difference]: Start difference. First operand 15343 states and 81250 transitions. Second operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:06,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:06,592 INFO L93 Difference]: Finished difference Result 20606 states and 98839 transitions. [2022-12-14 16:05:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 16:05:06,593 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 16:05:06,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:06,655 INFO L225 Difference]: With dead ends: 20606 [2022-12-14 16:05:06,655 INFO L226 Difference]: Without dead ends: 20598 [2022-12-14 16:05:06,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1551, Invalid=3005, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 16:05:06,656 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1003 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:06,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 0 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 16:05:06,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20598 states. [2022-12-14 16:05:06,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20598 to 15231. [2022-12-14 16:05:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15231 states, 15224 states have (on average 5.302548607461902) internal successors, (80726), 15230 states have internal predecessors, (80726), 0 states have call successors, (0), 0 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 16:05:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15231 states to 15231 states and 80726 transitions. [2022-12-14 16:05:07,042 INFO L78 Accepts]: Start accepts. Automaton has 15231 states and 80726 transitions. Word has length 16 [2022-12-14 16:05:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:07,042 INFO L495 AbstractCegarLoop]: Abstraction has 15231 states and 80726 transitions. [2022-12-14 16:05:07,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:07,042 INFO L276 IsEmpty]: Start isEmpty. Operand 15231 states and 80726 transitions. [2022-12-14 16:05:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 16:05:07,049 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:07,049 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:07,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-12-14 16:05:07,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-14 16:05:07,250 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:07,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1615187233, now seen corresponding path program 13 times [2022-12-14 16:05:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:07,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883748671] [2022-12-14 16:05:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:07,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:07,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:07,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883748671] [2022-12-14 16:05:07,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883748671] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:07,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850628447] [2022-12-14 16:05:07,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:05:07,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:07,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:07,356 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:07,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-14 16:05:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:07,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 16:05:07,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:07,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:07,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850628447] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:07,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1504853765] [2022-12-14 16:05:07,629 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:07,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:07,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-14 16:05:07,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515276249] [2022-12-14 16:05:07,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:07,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 16:05:07,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:07,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 16:05:07,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=717, Unknown=0, NotChecked=0, Total=992 [2022-12-14 16:05:07,631 INFO L87 Difference]: Start difference. First operand 15231 states and 80726 transitions. Second operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:08,798 INFO L93 Difference]: Finished difference Result 27385 states and 129442 transitions. [2022-12-14 16:05:08,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 16:05:08,799 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 16:05:08,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:08,935 INFO L225 Difference]: With dead ends: 27385 [2022-12-14 16:05:08,935 INFO L226 Difference]: Without dead ends: 27214 [2022-12-14 16:05:08,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1537, Invalid=2753, Unknown=0, NotChecked=0, Total=4290 [2022-12-14 16:05:08,936 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1280 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:08,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 0 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 16:05:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27214 states. [2022-12-14 16:05:09,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27214 to 15497. [2022-12-14 16:05:09,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15497 states, 15490 states have (on average 5.308198837959974) internal successors, (82224), 15496 states have internal predecessors, (82224), 0 states have call successors, (0), 0 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 16:05:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15497 states to 15497 states and 82224 transitions. [2022-12-14 16:05:09,344 INFO L78 Accepts]: Start accepts. Automaton has 15497 states and 82224 transitions. Word has length 16 [2022-12-14 16:05:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:09,345 INFO L495 AbstractCegarLoop]: Abstraction has 15497 states and 82224 transitions. [2022-12-14 16:05:09,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 15497 states and 82224 transitions. [2022-12-14 16:05:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 16:05:09,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:09,352 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:09,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-14 16:05:09,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:09,553 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:09,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1739304161, now seen corresponding path program 14 times [2022-12-14 16:05:09,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:09,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475829432] [2022-12-14 16:05:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:09,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:09,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:09,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475829432] [2022-12-14 16:05:09,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475829432] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:09,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425814473] [2022-12-14 16:05:09,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:05:09,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:09,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:09,657 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:09,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-14 16:05:09,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 16:05:09,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:09,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 16:05:09,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:09,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:10,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425814473] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:10,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [294629854] [2022-12-14 16:05:10,015 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:10,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:10,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-12-14 16:05:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113112693] [2022-12-14 16:05:10,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:10,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 16:05:10,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:10,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 16:05:10,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2022-12-14 16:05:10,017 INFO L87 Difference]: Start difference. First operand 15497 states and 82224 transitions. Second operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:11,822 INFO L93 Difference]: Finished difference Result 29125 states and 136506 transitions. [2022-12-14 16:05:11,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-14 16:05:11,822 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 16:05:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:11,919 INFO L225 Difference]: With dead ends: 29125 [2022-12-14 16:05:11,919 INFO L226 Difference]: Without dead ends: 29046 [2022-12-14 16:05:11,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2029, Invalid=3823, Unknown=0, NotChecked=0, Total=5852 [2022-12-14 16:05:11,921 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1201 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:11,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 0 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 16:05:11,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29046 states. [2022-12-14 16:05:12,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29046 to 16036. [2022-12-14 16:05:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16036 states, 16029 states have (on average 5.31655125085782) internal successors, (85219), 16035 states have internal predecessors, (85219), 0 states have call successors, (0), 0 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 16:05:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16036 states to 16036 states and 85219 transitions. [2022-12-14 16:05:12,403 INFO L78 Accepts]: Start accepts. Automaton has 16036 states and 85219 transitions. Word has length 16 [2022-12-14 16:05:12,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:12,403 INFO L495 AbstractCegarLoop]: Abstraction has 16036 states and 85219 transitions. [2022-12-14 16:05:12,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:12,403 INFO L276 IsEmpty]: Start isEmpty. Operand 16036 states and 85219 transitions. [2022-12-14 16:05:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 16:05:12,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:12,410 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:12,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-12-14 16:05:12,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-14 16:05:12,612 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:12,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:12,613 INFO L85 PathProgramCache]: Analyzing trace with hash -546339837, now seen corresponding path program 3 times [2022-12-14 16:05:12,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:12,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88667163] [2022-12-14 16:05:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:12,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:12,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:12,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88667163] [2022-12-14 16:05:12,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88667163] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:12,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280135070] [2022-12-14 16:05:12,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:05:12,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:12,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:12,770 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:12,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-14 16:05:12,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:05:12,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:12,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 16:05:12,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:13,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:13,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280135070] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:13,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [972903638] [2022-12-14 16:05:13,208 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:13,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:13,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2022-12-14 16:05:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32974470] [2022-12-14 16:05:13,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:13,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 16:05:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 16:05:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=814, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 16:05:13,210 INFO L87 Difference]: Start difference. First operand 16036 states and 85219 transitions. Second operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:14,225 INFO L93 Difference]: Finished difference Result 51388 states and 213655 transitions. [2022-12-14 16:05:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 16:05:14,225 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 16:05:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:14,389 INFO L225 Difference]: With dead ends: 51388 [2022-12-14 16:05:14,390 INFO L226 Difference]: Without dead ends: 51388 [2022-12-14 16:05:14,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=636, Invalid=1344, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 16:05:14,390 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1237 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:14,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 0 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 16:05:14,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51388 states. [2022-12-14 16:05:15,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51388 to 29968. [2022-12-14 16:05:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29968 states, 29961 states have (on average 5.510597109575782) internal successors, (165103), 29967 states have internal predecessors, (165103), 0 states have call successors, (0), 0 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 16:05:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29968 states to 29968 states and 165103 transitions. [2022-12-14 16:05:15,581 INFO L78 Accepts]: Start accepts. Automaton has 29968 states and 165103 transitions. Word has length 16 [2022-12-14 16:05:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:15,581 INFO L495 AbstractCegarLoop]: Abstraction has 29968 states and 165103 transitions. [2022-12-14 16:05:15,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:05:15,581 INFO L276 IsEmpty]: Start isEmpty. Operand 29968 states and 165103 transitions. [2022-12-14 16:05:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 16:05:15,588 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:15,588 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:15,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-14 16:05:15,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-14 16:05:15,789 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:15,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:15,791 INFO L85 PathProgramCache]: Analyzing trace with hash 267144851, now seen corresponding path program 15 times [2022-12-14 16:05:15,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:15,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660305381] [2022-12-14 16:05:15,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:15,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:15,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:15,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660305381] [2022-12-14 16:05:15,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660305381] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:15,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605916480] [2022-12-14 16:05:15,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:05:15,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:15,944 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:15,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-14 16:05:16,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:05:16,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:16,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 16:05:16,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:16,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:16,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605916480] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:16,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1307948341] [2022-12-14 16:05:16,310 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:16,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:16,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2022-12-14 16:05:16,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997812609] [2022-12-14 16:05:16,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:16,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 16:05:16,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:16,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 16:05:16,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=802, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 16:05:16,311 INFO L87 Difference]: Start difference. First operand 29968 states and 165103 transitions. Second operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 16:05:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:17,554 INFO L93 Difference]: Finished difference Result 53723 states and 264060 transitions. [2022-12-14 16:05:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-14 16:05:17,555 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 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 17 [2022-12-14 16:05:17,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:17,757 INFO L225 Difference]: With dead ends: 53723 [2022-12-14 16:05:17,757 INFO L226 Difference]: Without dead ends: 53604 [2022-12-14 16:05:17,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1393, Invalid=2389, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 16:05:17,758 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 945 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:17,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 0 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 16:05:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53604 states. [2022-12-14 16:05:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53604 to 30992. [2022-12-14 16:05:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30992 states, 30985 states have (on average 5.515991608842988) internal successors, (170913), 30991 states have internal predecessors, (170913), 0 states have call successors, (0), 0 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 16:05:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30992 states to 30992 states and 170913 transitions. [2022-12-14 16:05:18,860 INFO L78 Accepts]: Start accepts. Automaton has 30992 states and 170913 transitions. Word has length 17 [2022-12-14 16:05:18,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:18,860 INFO L495 AbstractCegarLoop]: Abstraction has 30992 states and 170913 transitions. [2022-12-14 16:05:18,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 16:05:18,861 INFO L276 IsEmpty]: Start isEmpty. Operand 30992 states and 170913 transitions. [2022-12-14 16:05:18,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 16:05:18,869 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:18,869 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:18,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-14 16:05:19,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-14 16:05:19,070 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash 360328417, now seen corresponding path program 3 times [2022-12-14 16:05:19,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:19,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845999550] [2022-12-14 16:05:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:19,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:19,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845999550] [2022-12-14 16:05:19,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845999550] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:19,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707748905] [2022-12-14 16:05:19,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:05:19,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:19,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:19,181 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:19,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-14 16:05:19,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:05:19,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:19,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 16:05:19,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:19,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:19,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707748905] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:19,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1889156467] [2022-12-14 16:05:19,497 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:19,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:19,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2022-12-14 16:05:19,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85997356] [2022-12-14 16:05:19,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:19,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 16:05:19,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:19,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 16:05:19,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=860, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 16:05:19,499 INFO L87 Difference]: Start difference. First operand 30992 states and 170913 transitions. Second operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 16:05:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:21,504 INFO L93 Difference]: Finished difference Result 57271 states and 277454 transitions. [2022-12-14 16:05:21,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-14 16:05:21,505 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 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 17 [2022-12-14 16:05:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:21,775 INFO L225 Difference]: With dead ends: 57271 [2022-12-14 16:05:21,776 INFO L226 Difference]: Without dead ends: 57180 [2022-12-14 16:05:21,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2207 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2196, Invalid=4124, Unknown=0, NotChecked=0, Total=6320 [2022-12-14 16:05:21,777 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1461 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:21,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 0 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:05:21,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57180 states. [2022-12-14 16:05:22,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57180 to 33058. [2022-12-14 16:05:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33058 states, 33051 states have (on average 5.517230946113582) internal successors, (182350), 33057 states have internal predecessors, (182350), 0 states have call successors, (0), 0 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 16:05:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33058 states to 33058 states and 182350 transitions. [2022-12-14 16:05:23,064 INFO L78 Accepts]: Start accepts. Automaton has 33058 states and 182350 transitions. Word has length 17 [2022-12-14 16:05:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:23,064 INFO L495 AbstractCegarLoop]: Abstraction has 33058 states and 182350 transitions. [2022-12-14 16:05:23,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 16:05:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 33058 states and 182350 transitions. [2022-12-14 16:05:23,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 16:05:23,075 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:23,075 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:23,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-14 16:05:23,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-14 16:05:23,277 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:23,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1934727012, now seen corresponding path program 16 times [2022-12-14 16:05:23,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:23,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014221427] [2022-12-14 16:05:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:23,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:23,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:23,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014221427] [2022-12-14 16:05:23,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014221427] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:23,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241843295] [2022-12-14 16:05:23,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:05:23,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:23,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:23,422 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:23,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-14 16:05:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:23,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 16:05:23,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:23,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:23,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241843295] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [102000206] [2022-12-14 16:05:23,727 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:23,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:23,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2022-12-14 16:05:23,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002832646] [2022-12-14 16:05:23,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:23,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 16:05:23,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:23,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 16:05:23,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 16:05:23,728 INFO L87 Difference]: Start difference. First operand 33058 states and 182350 transitions. Second operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 16:05:25,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:25,607 INFO L93 Difference]: Finished difference Result 67148 states and 325994 transitions. [2022-12-14 16:05:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-14 16:05:25,608 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 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 17 [2022-12-14 16:05:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:25,865 INFO L225 Difference]: With dead ends: 67148 [2022-12-14 16:05:25,865 INFO L226 Difference]: Without dead ends: 66933 [2022-12-14 16:05:25,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2134, Invalid=4028, Unknown=0, NotChecked=0, Total=6162 [2022-12-14 16:05:25,866 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1237 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:25,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 0 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:05:25,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66933 states. [2022-12-14 16:05:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66933 to 32533. [2022-12-14 16:05:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32533 states, 32526 states have (on average 5.516263911947365) internal successors, (179422), 32532 states have internal predecessors, (179422), 0 states have call successors, (0), 0 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 16:05:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32533 states to 32533 states and 179422 transitions. [2022-12-14 16:05:27,087 INFO L78 Accepts]: Start accepts. Automaton has 32533 states and 179422 transitions. Word has length 17 [2022-12-14 16:05:27,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:27,088 INFO L495 AbstractCegarLoop]: Abstraction has 32533 states and 179422 transitions. [2022-12-14 16:05:27,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 16:05:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 32533 states and 179422 transitions. [2022-12-14 16:05:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 16:05:27,188 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:27,188 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:27,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-14 16:05:27,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:27,389 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1700452668, now seen corresponding path program 17 times [2022-12-14 16:05:27,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:27,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276228130] [2022-12-14 16:05:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:27,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:27,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:27,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276228130] [2022-12-14 16:05:27,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276228130] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:27,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503846363] [2022-12-14 16:05:27,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:05:27,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:27,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:27,513 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:27,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-14 16:05:27,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 16:05:27,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:27,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 16:05:27,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:27,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:27,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503846363] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:27,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [642768849] [2022-12-14 16:05:27,920 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:27,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:27,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2022-12-14 16:05:27,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180418339] [2022-12-14 16:05:27,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:27,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 16:05:27,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 16:05:27,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=842, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 16:05:27,922 INFO L87 Difference]: Start difference. First operand 32533 states and 179422 transitions. Second operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 16:05:29,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:29,839 INFO L93 Difference]: Finished difference Result 59027 states and 290279 transitions. [2022-12-14 16:05:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 16:05:29,839 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 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 17 [2022-12-14 16:05:29,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:30,162 INFO L225 Difference]: With dead ends: 59027 [2022-12-14 16:05:30,162 INFO L226 Difference]: Without dead ends: 58898 [2022-12-14 16:05:30,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1644 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1852, Invalid=3404, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 16:05:30,163 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1124 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:30,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 0 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:05:30,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58898 states. [2022-12-14 16:05:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58898 to 32257. [2022-12-14 16:05:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32257 states, 32250 states have (on average 5.520341085271318) internal successors, (178031), 32256 states have internal predecessors, (178031), 0 states have call successors, (0), 0 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 16:05:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32257 states to 32257 states and 178031 transitions. [2022-12-14 16:05:31,498 INFO L78 Accepts]: Start accepts. Automaton has 32257 states and 178031 transitions. Word has length 17 [2022-12-14 16:05:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:31,498 INFO L495 AbstractCegarLoop]: Abstraction has 32257 states and 178031 transitions. [2022-12-14 16:05:31,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 16:05:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 32257 states and 178031 transitions. [2022-12-14 16:05:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 16:05:31,509 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:31,509 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:31,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-14 16:05:31,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-14 16:05:31,711 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:31,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:31,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2085432309, now seen corresponding path program 18 times [2022-12-14 16:05:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:31,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556193844] [2022-12-14 16:05:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:31,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:31,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:31,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556193844] [2022-12-14 16:05:31,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556193844] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:31,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811185361] [2022-12-14 16:05:31,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:05:31,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:31,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:31,895 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:31,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-14 16:05:31,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:05:31,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:31,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 16:05:31,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:32,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:32,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811185361] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:32,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1370219536] [2022-12-14 16:05:32,244 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:32,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:32,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-12-14 16:05:32,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41850393] [2022-12-14 16:05:32,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:32,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 16:05:32,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:32,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 16:05:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=984, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 16:05:32,245 INFO L87 Difference]: Start difference. First operand 32257 states and 178031 transitions. Second operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:33,958 INFO L93 Difference]: Finished difference Result 58474 states and 285041 transitions. [2022-12-14 16:05:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 16:05:33,959 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 16:05:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:34,172 INFO L225 Difference]: With dead ends: 58474 [2022-12-14 16:05:34,172 INFO L226 Difference]: Without dead ends: 58203 [2022-12-14 16:05:34,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1931, Invalid=3471, Unknown=0, NotChecked=0, Total=5402 [2022-12-14 16:05:34,173 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1203 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:34,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 0 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:05:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58203 states. [2022-12-14 16:05:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58203 to 31484. [2022-12-14 16:05:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31484 states, 31477 states have (on average 5.516694729485021) internal successors, (173649), 31483 states have internal predecessors, (173649), 0 states have call successors, (0), 0 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 16:05:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31484 states to 31484 states and 173649 transitions. [2022-12-14 16:05:35,220 INFO L78 Accepts]: Start accepts. Automaton has 31484 states and 173649 transitions. Word has length 18 [2022-12-14 16:05:35,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:35,220 INFO L495 AbstractCegarLoop]: Abstraction has 31484 states and 173649 transitions. [2022-12-14 16:05:35,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 31484 states and 173649 transitions. [2022-12-14 16:05:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 16:05:35,231 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:35,231 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:35,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-12-14 16:05:35,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-14 16:05:35,432 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1604812748, now seen corresponding path program 19 times [2022-12-14 16:05:35,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:35,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438296453] [2022-12-14 16:05:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:35,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:35,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:35,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438296453] [2022-12-14 16:05:35,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438296453] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:35,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357175222] [2022-12-14 16:05:35,559 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:05:35,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:35,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:35,560 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:35,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-14 16:05:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:35,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 16:05:35,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:35,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:35,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357175222] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:35,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [128402007] [2022-12-14 16:05:35,972 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:35,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:35,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-12-14 16:05:35,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881296187] [2022-12-14 16:05:35,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:35,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 16:05:35,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:35,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 16:05:35,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=990, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 16:05:35,974 INFO L87 Difference]: Start difference. First operand 31484 states and 173649 transitions. Second operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:38,217 INFO L93 Difference]: Finished difference Result 66939 states and 323377 transitions. [2022-12-14 16:05:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-14 16:05:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 16:05:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:38,465 INFO L225 Difference]: With dead ends: 66939 [2022-12-14 16:05:38,465 INFO L226 Difference]: Without dead ends: 66585 [2022-12-14 16:05:38,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2319, Invalid=4161, Unknown=0, NotChecked=0, Total=6480 [2022-12-14 16:05:38,466 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1611 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:38,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 0 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 16:05:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66585 states. [2022-12-14 16:05:39,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66585 to 28923. [2022-12-14 16:05:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28923 states, 28916 states have (on average 5.500207497579195) internal successors, (159044), 28922 states have internal predecessors, (159044), 0 states have call successors, (0), 0 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 16:05:39,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28923 states to 28923 states and 159044 transitions. [2022-12-14 16:05:39,564 INFO L78 Accepts]: Start accepts. Automaton has 28923 states and 159044 transitions. Word has length 18 [2022-12-14 16:05:39,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:39,564 INFO L495 AbstractCegarLoop]: Abstraction has 28923 states and 159044 transitions. [2022-12-14 16:05:39,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:39,564 INFO L276 IsEmpty]: Start isEmpty. Operand 28923 states and 159044 transitions. [2022-12-14 16:05:39,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 16:05:39,574 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:39,575 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:39,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-12-14 16:05:39,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:39,776 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:39,777 INFO L85 PathProgramCache]: Analyzing trace with hash 266346152, now seen corresponding path program 4 times [2022-12-14 16:05:39,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:39,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515136935] [2022-12-14 16:05:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:39,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:39,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:39,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515136935] [2022-12-14 16:05:39,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515136935] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:39,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731905205] [2022-12-14 16:05:39,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:05:39,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:39,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:39,912 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:39,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-14 16:05:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:39,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 16:05:39,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:40,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:40,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731905205] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:40,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [950491976] [2022-12-14 16:05:40,309 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:40,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:40,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-12-14 16:05:40,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074695957] [2022-12-14 16:05:40,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:40,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 16:05:40,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:40,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 16:05:40,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=997, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 16:05:40,310 INFO L87 Difference]: Start difference. First operand 28923 states and 159044 transitions. Second operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:42,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:42,353 INFO L93 Difference]: Finished difference Result 59442 states and 286300 transitions. [2022-12-14 16:05:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 16:05:42,353 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 16:05:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:42,619 INFO L225 Difference]: With dead ends: 59442 [2022-12-14 16:05:42,619 INFO L226 Difference]: Without dead ends: 59290 [2022-12-14 16:05:42,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2072, Invalid=3780, Unknown=0, NotChecked=0, Total=5852 [2022-12-14 16:05:42,620 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:42,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 0 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:05:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59290 states. [2022-12-14 16:05:43,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59290 to 27980. [2022-12-14 16:05:43,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27980 states, 27973 states have (on average 5.4982661852500625) internal successors, (153803), 27979 states have internal predecessors, (153803), 0 states have call successors, (0), 0 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 16:05:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27980 states to 27980 states and 153803 transitions. [2022-12-14 16:05:43,864 INFO L78 Accepts]: Start accepts. Automaton has 27980 states and 153803 transitions. Word has length 18 [2022-12-14 16:05:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:43,864 INFO L495 AbstractCegarLoop]: Abstraction has 27980 states and 153803 transitions. [2022-12-14 16:05:43,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:43,865 INFO L276 IsEmpty]: Start isEmpty. Operand 27980 states and 153803 transitions. [2022-12-14 16:05:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 16:05:43,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:43,874 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:43,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-12-14 16:05:44,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-12-14 16:05:44,075 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash 409496715, now seen corresponding path program 20 times [2022-12-14 16:05:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:44,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890809012] [2022-12-14 16:05:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:44,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:44,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:44,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890809012] [2022-12-14 16:05:44,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890809012] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:44,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504152064] [2022-12-14 16:05:44,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:05:44,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:44,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:44,219 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:44,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-14 16:05:44,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 16:05:44,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:44,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 16:05:44,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:44,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:44,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504152064] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:44,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1700203187] [2022-12-14 16:05:44,677 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:44,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:44,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-12-14 16:05:44,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375878234] [2022-12-14 16:05:44,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:44,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 16:05:44,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 16:05:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1007, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 16:05:44,679 INFO L87 Difference]: Start difference. First operand 27980 states and 153803 transitions. Second operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:47,142 INFO L93 Difference]: Finished difference Result 65724 states and 313378 transitions. [2022-12-14 16:05:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-14 16:05:47,143 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 16:05:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:47,381 INFO L225 Difference]: With dead ends: 65724 [2022-12-14 16:05:47,382 INFO L226 Difference]: Without dead ends: 65465 [2022-12-14 16:05:47,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2757 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2674, Invalid=4808, Unknown=0, NotChecked=0, Total=7482 [2022-12-14 16:05:47,383 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2387 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:47,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 0 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 16:05:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65465 states. [2022-12-14 16:05:48,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65465 to 25670. [2022-12-14 16:05:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25670 states, 25663 states have (on average 5.485134239956357) internal successors, (140765), 25669 states have internal predecessors, (140765), 0 states have call successors, (0), 0 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 16:05:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25670 states to 25670 states and 140765 transitions. [2022-12-14 16:05:48,407 INFO L78 Accepts]: Start accepts. Automaton has 25670 states and 140765 transitions. Word has length 18 [2022-12-14 16:05:48,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:48,407 INFO L495 AbstractCegarLoop]: Abstraction has 25670 states and 140765 transitions. [2022-12-14 16:05:48,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 25670 states and 140765 transitions. [2022-12-14 16:05:48,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 16:05:48,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:48,416 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:48,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-12-14 16:05:48,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-12-14 16:05:48,617 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:48,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:48,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1150338198, now seen corresponding path program 5 times [2022-12-14 16:05:48,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:48,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066296417] [2022-12-14 16:05:48,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:48,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:48,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:48,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066296417] [2022-12-14 16:05:48,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066296417] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:48,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484490996] [2022-12-14 16:05:48,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:05:48,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:48,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:48,749 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:48,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-12-14 16:05:48,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 16:05:48,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:48,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 16:05:48,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:48,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:49,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484490996] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:49,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [402452143] [2022-12-14 16:05:49,165 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:49,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:49,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-12-14 16:05:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138332247] [2022-12-14 16:05:49,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:49,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 16:05:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 16:05:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 16:05:49,167 INFO L87 Difference]: Start difference. First operand 25670 states and 140765 transitions. Second operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:51,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:51,376 INFO L93 Difference]: Finished difference Result 58479 states and 275741 transitions. [2022-12-14 16:05:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-14 16:05:51,377 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 16:05:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:51,584 INFO L225 Difference]: With dead ends: 58479 [2022-12-14 16:05:51,585 INFO L226 Difference]: Without dead ends: 58242 [2022-12-14 16:05:51,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2666 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2702, Invalid=5130, Unknown=0, NotChecked=0, Total=7832 [2022-12-14 16:05:51,586 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1555 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:51,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 0 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 16:05:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58242 states. [2022-12-14 16:05:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58242 to 24297. [2022-12-14 16:05:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24297 states, 24290 states have (on average 5.471881432688349) internal successors, (132912), 24296 states have internal predecessors, (132912), 0 states have call successors, (0), 0 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 16:05:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24297 states to 24297 states and 132912 transitions. [2022-12-14 16:05:52,491 INFO L78 Accepts]: Start accepts. Automaton has 24297 states and 132912 transitions. Word has length 18 [2022-12-14 16:05:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:52,491 INFO L495 AbstractCegarLoop]: Abstraction has 24297 states and 132912 transitions. [2022-12-14 16:05:52,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 24297 states and 132912 transitions. [2022-12-14 16:05:52,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 16:05:52,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:52,501 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:52,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-12-14 16:05:52,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:52,702 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1439919848, now seen corresponding path program 6 times [2022-12-14 16:05:52,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:52,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878720599] [2022-12-14 16:05:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:52,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:52,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:52,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878720599] [2022-12-14 16:05:52,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878720599] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:52,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272559061] [2022-12-14 16:05:52,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:05:52,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:52,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:52,807 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:52,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-12-14 16:05:52,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:05:52,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:52,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 16:05:52,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:53,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:53,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272559061] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:53,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1536219282] [2022-12-14 16:05:53,260 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:53,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:53,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-12-14 16:05:53,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865984910] [2022-12-14 16:05:53,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:53,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 16:05:53,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:53,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 16:05:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 16:05:53,261 INFO L87 Difference]: Start difference. First operand 24297 states and 132912 transitions. Second operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:55,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:55,448 INFO L93 Difference]: Finished difference Result 60587 states and 285599 transitions. [2022-12-14 16:05:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-14 16:05:55,449 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 16:05:55,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:55,663 INFO L225 Difference]: With dead ends: 60587 [2022-12-14 16:05:55,663 INFO L226 Difference]: Without dead ends: 60389 [2022-12-14 16:05:55,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2809 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2655, Invalid=5001, Unknown=0, NotChecked=0, Total=7656 [2022-12-14 16:05:55,664 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2104 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:55,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2104 Valid, 0 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:05:55,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60389 states. [2022-12-14 16:05:56,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60389 to 22558. [2022-12-14 16:05:56,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22558 states, 22551 states have (on average 5.45736330983105) internal successors, (123069), 22557 states have internal predecessors, (123069), 0 states have call successors, (0), 0 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 16:05:56,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22558 states to 22558 states and 123069 transitions. [2022-12-14 16:05:56,535 INFO L78 Accepts]: Start accepts. Automaton has 22558 states and 123069 transitions. Word has length 18 [2022-12-14 16:05:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:56,535 INFO L495 AbstractCegarLoop]: Abstraction has 22558 states and 123069 transitions. [2022-12-14 16:05:56,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:56,535 INFO L276 IsEmpty]: Start isEmpty. Operand 22558 states and 123069 transitions. [2022-12-14 16:05:56,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 16:05:56,544 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:56,544 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:56,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-12-14 16:05:56,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-12-14 16:05:56,745 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:05:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash 605111036, now seen corresponding path program 21 times [2022-12-14 16:05:56,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:56,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368311651] [2022-12-14 16:05:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:56,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:56,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368311651] [2022-12-14 16:05:56,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368311651] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:56,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980301885] [2022-12-14 16:05:56,886 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:05:56,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:56,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:56,887 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:56,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-14 16:05:56,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:05:56,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:05:56,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 16:05:56,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:57,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:57,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980301885] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:05:57,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1466385751] [2022-12-14 16:05:57,247 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:05:57,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:05:57,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-12-14 16:05:57,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543776522] [2022-12-14 16:05:57,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:05:57,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 16:05:57,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 16:05:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 16:05:57,249 INFO L87 Difference]: Start difference. First operand 22558 states and 123069 transitions. Second operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:05:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:59,396 INFO L93 Difference]: Finished difference Result 59159 states and 274122 transitions. [2022-12-14 16:05:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-14 16:05:59,396 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 16:05:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:59,695 INFO L225 Difference]: With dead ends: 59159 [2022-12-14 16:05:59,695 INFO L226 Difference]: Without dead ends: 58982 [2022-12-14 16:05:59,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2824 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2703, Invalid=4953, Unknown=0, NotChecked=0, Total=7656 [2022-12-14 16:05:59,695 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1560 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:59,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 0 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 16:05:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58982 states. [2022-12-14 16:06:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58982 to 20451. [2022-12-14 16:06:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20451 states, 20444 states have (on average 5.424280962629623) internal successors, (110894), 20450 states have internal predecessors, (110894), 0 states have call successors, (0), 0 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 16:06:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20451 states to 20451 states and 110894 transitions. [2022-12-14 16:06:00,597 INFO L78 Accepts]: Start accepts. Automaton has 20451 states and 110894 transitions. Word has length 18 [2022-12-14 16:06:00,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:00,597 INFO L495 AbstractCegarLoop]: Abstraction has 20451 states and 110894 transitions. [2022-12-14 16:06:00,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:06:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 20451 states and 110894 transitions. [2022-12-14 16:06:00,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 16:06:00,608 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:00,608 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:00,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-12-14 16:06:00,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:00,810 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:00,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:00,811 INFO L85 PathProgramCache]: Analyzing trace with hash -379748954, now seen corresponding path program 22 times [2022-12-14 16:06:00,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:00,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402755971] [2022-12-14 16:06:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:00,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:00,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:00,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402755971] [2022-12-14 16:06:00,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402755971] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:00,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807813115] [2022-12-14 16:06:00,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:06:00,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:00,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:00,947 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:00,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-12-14 16:06:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:01,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 16:06:01,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:01,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:01,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807813115] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:01,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [25169899] [2022-12-14 16:06:01,363 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:01,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:01,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-12-14 16:06:01,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125773260] [2022-12-14 16:06:01,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:01,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 16:06:01,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:01,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 16:06:01,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=964, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 16:06:01,365 INFO L87 Difference]: Start difference. First operand 20451 states and 110894 transitions. Second operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:06:03,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:03,763 INFO L93 Difference]: Finished difference Result 52256 states and 244159 transitions. [2022-12-14 16:06:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-14 16:06:03,763 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 16:06:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:03,950 INFO L225 Difference]: With dead ends: 52256 [2022-12-14 16:06:03,951 INFO L226 Difference]: Without dead ends: 52096 [2022-12-14 16:06:03,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2477, Invalid=4329, Unknown=0, NotChecked=0, Total=6806 [2022-12-14 16:06:03,951 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1373 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:03,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 0 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 16:06:04,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52096 states. [2022-12-14 16:06:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52096 to 19138. [2022-12-14 16:06:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19138 states, 19131 states have (on average 5.400658616904501) internal successors, (103320), 19137 states have internal predecessors, (103320), 0 states have call successors, (0), 0 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 16:06:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19138 states to 19138 states and 103320 transitions. [2022-12-14 16:06:04,693 INFO L78 Accepts]: Start accepts. Automaton has 19138 states and 103320 transitions. Word has length 18 [2022-12-14 16:06:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:04,693 INFO L495 AbstractCegarLoop]: Abstraction has 19138 states and 103320 transitions. [2022-12-14 16:06:04,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:06:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 19138 states and 103320 transitions. [2022-12-14 16:06:04,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 16:06:04,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:04,701 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:04,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-12-14 16:06:04,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-12-14 16:06:04,903 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:04,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1666451022, now seen corresponding path program 23 times [2022-12-14 16:06:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:04,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059701779] [2022-12-14 16:06:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:05,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:05,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059701779] [2022-12-14 16:06:05,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059701779] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:05,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488865573] [2022-12-14 16:06:05,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:06:05,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:05,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:05,059 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:05,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-12-14 16:06:05,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 16:06:05,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:06:05,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 16:06:05,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:05,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:05,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488865573] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:05,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1543018371] [2022-12-14 16:06:05,590 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:05,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:05,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-12-14 16:06:05,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114975424] [2022-12-14 16:06:05,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:05,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 16:06:05,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:05,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 16:06:05,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1177, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 16:06:05,592 INFO L87 Difference]: Start difference. First operand 19138 states and 103320 transitions. Second operand has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:06:07,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:07,944 INFO L93 Difference]: Finished difference Result 47118 states and 216467 transitions. [2022-12-14 16:06:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-14 16:06:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 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 19 [2022-12-14 16:06:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:08,192 INFO L225 Difference]: With dead ends: 47118 [2022-12-14 16:06:08,192 INFO L226 Difference]: Without dead ends: 46938 [2022-12-14 16:06:08,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2647 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2819, Invalid=5371, Unknown=0, NotChecked=0, Total=8190 [2022-12-14 16:06:08,193 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1823 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:08,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 0 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 16:06:08,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46938 states. [2022-12-14 16:06:08,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46938 to 17877. [2022-12-14 16:06:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17877 states, 17870 states have (on average 5.407666480134304) internal successors, (96635), 17876 states have internal predecessors, (96635), 0 states have call successors, (0), 0 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 16:06:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17877 states to 17877 states and 96635 transitions. [2022-12-14 16:06:08,828 INFO L78 Accepts]: Start accepts. Automaton has 17877 states and 96635 transitions. Word has length 19 [2022-12-14 16:06:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:08,828 INFO L495 AbstractCegarLoop]: Abstraction has 17877 states and 96635 transitions. [2022-12-14 16:06:08,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:06:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 17877 states and 96635 transitions. [2022-12-14 16:06:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 16:06:08,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:08,836 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:08,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-12-14 16:06:09,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-12-14 16:06:09,037 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:09,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1897816456, now seen corresponding path program 24 times [2022-12-14 16:06:09,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:09,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593406978] [2022-12-14 16:06:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:09,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:09,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593406978] [2022-12-14 16:06:09,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593406978] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:09,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699249223] [2022-12-14 16:06:09,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:06:09,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:09,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:09,178 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:09,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-12-14 16:06:09,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:06:09,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:06:09,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 16:06:09,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:09,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:09,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699249223] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:09,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1838799594] [2022-12-14 16:06:09,583 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:09,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:09,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-12-14 16:06:09,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412341904] [2022-12-14 16:06:09,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:09,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 16:06:09,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:09,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 16:06:09,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1215, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 16:06:09,584 INFO L87 Difference]: Start difference. First operand 17877 states and 96635 transitions. Second operand has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:06:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:12,270 INFO L93 Difference]: Finished difference Result 52714 states and 237353 transitions. [2022-12-14 16:06:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-14 16:06:12,271 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 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 19 [2022-12-14 16:06:12,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:12,469 INFO L225 Difference]: With dead ends: 52714 [2022-12-14 16:06:12,469 INFO L226 Difference]: Without dead ends: 52474 [2022-12-14 16:06:12,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3910 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3496, Invalid=6806, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 16:06:12,469 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2088 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:12,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 0 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 16:06:12,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52474 states. [2022-12-14 16:06:13,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52474 to 15963. [2022-12-14 16:06:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15963 states, 15956 states have (on average 5.372712459262973) internal successors, (85727), 15962 states have internal predecessors, (85727), 0 states have call successors, (0), 0 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 16:06:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15963 states to 15963 states and 85727 transitions. [2022-12-14 16:06:13,128 INFO L78 Accepts]: Start accepts. Automaton has 15963 states and 85727 transitions. Word has length 19 [2022-12-14 16:06:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:13,128 INFO L495 AbstractCegarLoop]: Abstraction has 15963 states and 85727 transitions. [2022-12-14 16:06:13,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:06:13,129 INFO L276 IsEmpty]: Start isEmpty. Operand 15963 states and 85727 transitions. [2022-12-14 16:06:13,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 16:06:13,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:13,136 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:13,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-12-14 16:06:13,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:13,337 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:13,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:13,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1993213099, now seen corresponding path program 7 times [2022-12-14 16:06:13,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:13,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625986417] [2022-12-14 16:06:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:13,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:13,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:13,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625986417] [2022-12-14 16:06:13,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625986417] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:13,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620345145] [2022-12-14 16:06:13,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:06:13,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:13,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:13,543 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:13,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-12-14 16:06:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:13,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 16:06:13,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:13,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:13,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620345145] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:13,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1569993059] [2022-12-14 16:06:13,977 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:13,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:13,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-12-14 16:06:13,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992180407] [2022-12-14 16:06:13,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:13,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 16:06:13,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 16:06:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=1210, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 16:06:13,979 INFO L87 Difference]: Start difference. First operand 15963 states and 85727 transitions. Second operand has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:06:16,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:16,424 INFO L93 Difference]: Finished difference Result 52693 states and 233214 transitions. [2022-12-14 16:06:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-14 16:06:16,424 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 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 19 [2022-12-14 16:06:16,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:16,645 INFO L225 Difference]: With dead ends: 52693 [2022-12-14 16:06:16,646 INFO L226 Difference]: Without dead ends: 52334 [2022-12-14 16:06:16,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3920 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3562, Invalid=6740, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 16:06:16,646 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2369 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:16,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2369 Valid, 0 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 16:06:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52334 states. [2022-12-14 16:06:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52334 to 11710. [2022-12-14 16:06:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11710 states, 11703 states have (on average 5.239682132786465) internal successors, (61320), 11709 states have internal predecessors, (61320), 0 states have call successors, (0), 0 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 16:06:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11710 states to 11710 states and 61320 transitions. [2022-12-14 16:06:17,196 INFO L78 Accepts]: Start accepts. Automaton has 11710 states and 61320 transitions. Word has length 19 [2022-12-14 16:06:17,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:17,196 INFO L495 AbstractCegarLoop]: Abstraction has 11710 states and 61320 transitions. [2022-12-14 16:06:17,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:06:17,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11710 states and 61320 transitions. [2022-12-14 16:06:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 16:06:17,202 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:17,202 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:17,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-12-14 16:06:17,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-12-14 16:06:17,403 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:17,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:17,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1383652279, now seen corresponding path program 25 times [2022-12-14 16:06:17,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:17,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888399416] [2022-12-14 16:06:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:17,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:17,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:17,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888399416] [2022-12-14 16:06:17,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888399416] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:17,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230196710] [2022-12-14 16:06:17,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:06:17,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:17,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:17,554 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:17,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-12-14 16:06:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:17,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 16:06:17,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:17,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:18,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230196710] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:18,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [318844313] [2022-12-14 16:06:18,087 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:18,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:18,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-12-14 16:06:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001554130] [2022-12-14 16:06:18,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:18,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 16:06:18,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 16:06:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=1211, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 16:06:18,089 INFO L87 Difference]: Start difference. First operand 11710 states and 61320 transitions. Second operand has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:06:21,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:21,416 INFO L93 Difference]: Finished difference Result 49209 states and 208949 transitions. [2022-12-14 16:06:21,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-14 16:06:21,417 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 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 19 [2022-12-14 16:06:21,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:21,597 INFO L225 Difference]: With dead ends: 49209 [2022-12-14 16:06:21,597 INFO L226 Difference]: Without dead ends: 48932 [2022-12-14 16:06:21,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4191 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3733, Invalid=6979, Unknown=0, NotChecked=0, Total=10712 [2022-12-14 16:06:21,598 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2415 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:21,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 0 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 16:06:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48932 states. [2022-12-14 16:06:22,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48932 to 8870. [2022-12-14 16:06:22,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8870 states, 8865 states have (on average 5.107839819514947) internal successors, (45281), 8869 states have internal predecessors, (45281), 0 states have call successors, (0), 0 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 16:06:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 45281 transitions. [2022-12-14 16:06:22,072 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 45281 transitions. Word has length 19 [2022-12-14 16:06:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:22,072 INFO L495 AbstractCegarLoop]: Abstraction has 8870 states and 45281 transitions. [2022-12-14 16:06:22,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:06:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 45281 transitions. [2022-12-14 16:06:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 16:06:22,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:22,077 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:22,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-12-14 16:06:22,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:22,278 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash 951101551, now seen corresponding path program 8 times [2022-12-14 16:06:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:22,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040155021] [2022-12-14 16:06:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:22,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:22,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:22,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040155021] [2022-12-14 16:06:22,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040155021] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:22,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42791671] [2022-12-14 16:06:22,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:06:22,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:22,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:22,431 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:22,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-12-14 16:06:22,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 16:06:22,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:06:22,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 16:06:22,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:22,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:22,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42791671] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:22,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2018466247] [2022-12-14 16:06:22,899 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:22,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:22,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-12-14 16:06:22,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988429416] [2022-12-14 16:06:22,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:22,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 16:06:22,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 16:06:22,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=1161, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 16:06:22,901 INFO L87 Difference]: Start difference. First operand 8870 states and 45281 transitions. Second operand has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:06:24,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:24,439 INFO L93 Difference]: Finished difference Result 30431 states and 128124 transitions. [2022-12-14 16:06:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 16:06:24,440 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 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 19 [2022-12-14 16:06:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:24,520 INFO L225 Difference]: With dead ends: 30431 [2022-12-14 16:06:24,520 INFO L226 Difference]: Without dead ends: 30324 [2022-12-14 16:06:24,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2017 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2371, Invalid=4435, Unknown=0, NotChecked=0, Total=6806 [2022-12-14 16:06:24,521 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1569 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:24,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 0 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:06:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30324 states. [2022-12-14 16:06:24,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30324 to 8340. [2022-12-14 16:06:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8340 states, 8335 states have (on average 5.092381523695261) internal successors, (42445), 8339 states have internal predecessors, (42445), 0 states have call successors, (0), 0 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 16:06:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8340 states to 8340 states and 42445 transitions. [2022-12-14 16:06:24,866 INFO L78 Accepts]: Start accepts. Automaton has 8340 states and 42445 transitions. Word has length 19 [2022-12-14 16:06:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:24,866 INFO L495 AbstractCegarLoop]: Abstraction has 8340 states and 42445 transitions. [2022-12-14 16:06:24,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:06:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 8340 states and 42445 transitions. [2022-12-14 16:06:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 16:06:24,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:24,870 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:24,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-12-14 16:06:25,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:25,072 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:25,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1433800138, now seen corresponding path program 9 times [2022-12-14 16:06:25,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:25,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121254870] [2022-12-14 16:06:25,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:25,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:25,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:25,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121254870] [2022-12-14 16:06:25,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121254870] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:25,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125499109] [2022-12-14 16:06:25,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:06:25,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:25,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:25,293 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:25,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-12-14 16:06:25,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:06:25,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:06:25,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 16:06:25,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:25,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:25,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125499109] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:25,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [102046151] [2022-12-14 16:06:25,745 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:25,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:25,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-12-14 16:06:25,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199400765] [2022-12-14 16:06:25,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:25,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 16:06:25,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 16:06:25,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=1356, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 16:06:25,746 INFO L87 Difference]: Start difference. First operand 8340 states and 42445 transitions. Second operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:28,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:28,401 INFO L93 Difference]: Finished difference Result 41000 states and 167912 transitions. [2022-12-14 16:06:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-14 16:06:28,401 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 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 20 [2022-12-14 16:06:28,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:28,514 INFO L225 Difference]: With dead ends: 41000 [2022-12-14 16:06:28,514 INFO L226 Difference]: Without dead ends: 40893 [2022-12-14 16:06:28,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4501 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4203, Invalid=7787, Unknown=0, NotChecked=0, Total=11990 [2022-12-14 16:06:28,515 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2088 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:28,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 0 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 16:06:28,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40893 states. [2022-12-14 16:06:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40893 to 7228. [2022-12-14 16:06:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7228 states, 7223 states have (on average 4.98338640454105) internal successors, (35995), 7227 states have internal predecessors, (35995), 0 states have call successors, (0), 0 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 16:06:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7228 states to 7228 states and 35995 transitions. [2022-12-14 16:06:28,931 INFO L78 Accepts]: Start accepts. Automaton has 7228 states and 35995 transitions. Word has length 20 [2022-12-14 16:06:28,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:28,931 INFO L495 AbstractCegarLoop]: Abstraction has 7228 states and 35995 transitions. [2022-12-14 16:06:28,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7228 states and 35995 transitions. [2022-12-14 16:06:28,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 16:06:28,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:28,936 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:28,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-12-14 16:06:29,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-12-14 16:06:29,138 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:29,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:29,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1543658138, now seen corresponding path program 26 times [2022-12-14 16:06:29,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:29,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346912508] [2022-12-14 16:06:29,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:29,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:29,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:29,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346912508] [2022-12-14 16:06:29,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346912508] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:29,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839860133] [2022-12-14 16:06:29,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:06:29,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:29,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:29,316 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:29,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-12-14 16:06:29,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 16:06:29,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:06:29,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 16:06:29,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:29,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:29,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839860133] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:29,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [239714538] [2022-12-14 16:06:29,872 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:29,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:29,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-12-14 16:06:29,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725873355] [2022-12-14 16:06:29,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:29,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 16:06:29,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:29,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 16:06:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=1381, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 16:06:29,873 INFO L87 Difference]: Start difference. First operand 7228 states and 35995 transitions. Second operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:32,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:32,809 INFO L93 Difference]: Finished difference Result 41861 states and 169557 transitions. [2022-12-14 16:06:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-12-14 16:06:32,810 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 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 20 [2022-12-14 16:06:32,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:32,923 INFO L225 Difference]: With dead ends: 41861 [2022-12-14 16:06:32,923 INFO L226 Difference]: Without dead ends: 41714 [2022-12-14 16:06:32,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4731 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4222, Invalid=7988, Unknown=0, NotChecked=0, Total=12210 [2022-12-14 16:06:32,924 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2192 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:32,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2192 Valid, 0 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 16:06:32,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41714 states. [2022-12-14 16:06:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41714 to 5906. [2022-12-14 16:06:33,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5906 states, 5901 states have (on average 4.822064056939502) internal successors, (28455), 5905 states have internal predecessors, (28455), 0 states have call successors, (0), 0 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 16:06:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5906 states to 5906 states and 28455 transitions. [2022-12-14 16:06:33,321 INFO L78 Accepts]: Start accepts. Automaton has 5906 states and 28455 transitions. Word has length 20 [2022-12-14 16:06:33,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:33,321 INFO L495 AbstractCegarLoop]: Abstraction has 5906 states and 28455 transitions. [2022-12-14 16:06:33,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5906 states and 28455 transitions. [2022-12-14 16:06:33,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 16:06:33,324 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:33,325 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:33,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-12-14 16:06:33,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-12-14 16:06:33,526 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:33,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1321249992, now seen corresponding path program 10 times [2022-12-14 16:06:33,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:33,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597343818] [2022-12-14 16:06:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:33,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:33,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:33,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597343818] [2022-12-14 16:06:33,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597343818] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:33,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379741097] [2022-12-14 16:06:33,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:06:33,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:33,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:33,695 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:33,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-12-14 16:06:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:33,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 16:06:33,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:33,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:34,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379741097] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:34,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1925447560] [2022-12-14 16:06:34,214 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:34,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:34,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-12-14 16:06:34,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746469110] [2022-12-14 16:06:34,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:34,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 16:06:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:34,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 16:06:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=1383, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 16:06:34,216 INFO L87 Difference]: Start difference. First operand 5906 states and 28455 transitions. Second operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:37,010 INFO L93 Difference]: Finished difference Result 37518 states and 148990 transitions. [2022-12-14 16:06:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-12-14 16:06:37,010 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 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 20 [2022-12-14 16:06:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:37,113 INFO L225 Difference]: With dead ends: 37518 [2022-12-14 16:06:37,113 INFO L226 Difference]: Without dead ends: 37436 [2022-12-14 16:06:37,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3991 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3828, Invalid=7302, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 16:06:37,114 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2125 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:37,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 0 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 16:06:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37436 states. [2022-12-14 16:06:37,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37436 to 5050. [2022-12-14 16:06:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5050 states, 5045 states have (on average 4.725074331020813) internal successors, (23838), 5049 states have internal predecessors, (23838), 0 states have call successors, (0), 0 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 16:06:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5050 states to 5050 states and 23838 transitions. [2022-12-14 16:06:37,464 INFO L78 Accepts]: Start accepts. Automaton has 5050 states and 23838 transitions. Word has length 20 [2022-12-14 16:06:37,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:37,464 INFO L495 AbstractCegarLoop]: Abstraction has 5050 states and 23838 transitions. [2022-12-14 16:06:37,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:37,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5050 states and 23838 transitions. [2022-12-14 16:06:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 16:06:37,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:37,468 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:37,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-12-14 16:06:37,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:37,669 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:37,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2018868510, now seen corresponding path program 11 times [2022-12-14 16:06:37,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:37,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59957210] [2022-12-14 16:06:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:37,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:37,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:37,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59957210] [2022-12-14 16:06:37,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59957210] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:37,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447458762] [2022-12-14 16:06:37,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 16:06:37,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:37,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:37,821 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:37,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-12-14 16:06:37,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 16:06:37,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:06:37,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 16:06:37,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:38,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:38,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447458762] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [65334503] [2022-12-14 16:06:38,248 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:38,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:38,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-12-14 16:06:38,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924795816] [2022-12-14 16:06:38,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:38,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 16:06:38,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:38,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 16:06:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 16:06:38,249 INFO L87 Difference]: Start difference. First operand 5050 states and 23838 transitions. Second operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:40,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:40,808 INFO L93 Difference]: Finished difference Result 40640 states and 155917 transitions. [2022-12-14 16:06:40,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-12-14 16:06:40,809 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 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 20 [2022-12-14 16:06:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:40,948 INFO L225 Difference]: With dead ends: 40640 [2022-12-14 16:06:40,948 INFO L226 Difference]: Without dead ends: 40535 [2022-12-14 16:06:40,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5042 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4436, Invalid=8220, Unknown=0, NotChecked=0, Total=12656 [2022-12-14 16:06:40,949 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:40,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 0 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 16:06:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40535 states. [2022-12-14 16:06:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40535 to 3480. [2022-12-14 16:06:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3480 states, 3475 states have (on average 4.345611510791367) internal successors, (15101), 3479 states have internal predecessors, (15101), 0 states have call successors, (0), 0 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 16:06:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 15101 transitions. [2022-12-14 16:06:41,232 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 15101 transitions. Word has length 20 [2022-12-14 16:06:41,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:41,232 INFO L495 AbstractCegarLoop]: Abstraction has 3480 states and 15101 transitions. [2022-12-14 16:06:41,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 15101 transitions. [2022-12-14 16:06:41,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 16:06:41,234 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:41,235 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:41,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-12-14 16:06:41,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:41,436 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:41,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash 618426996, now seen corresponding path program 12 times [2022-12-14 16:06:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:41,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690372291] [2022-12-14 16:06:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:41,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:41,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:41,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690372291] [2022-12-14 16:06:41,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690372291] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:41,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295621086] [2022-12-14 16:06:41,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:06:41,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:41,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:41,613 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:41,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-12-14 16:06:41,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:06:41,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:06:41,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 16:06:41,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:41,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:42,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295621086] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:42,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1232624206] [2022-12-14 16:06:42,148 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:42,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:42,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-12-14 16:06:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606262652] [2022-12-14 16:06:42,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:42,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 16:06:42,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 16:06:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 16:06:42,150 INFO L87 Difference]: Start difference. First operand 3480 states and 15101 transitions. Second operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:44,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:44,097 INFO L93 Difference]: Finished difference Result 30052 states and 113869 transitions. [2022-12-14 16:06:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-14 16:06:44,097 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 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 20 [2022-12-14 16:06:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:44,167 INFO L225 Difference]: With dead ends: 30052 [2022-12-14 16:06:44,168 INFO L226 Difference]: Without dead ends: 30032 [2022-12-14 16:06:44,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3251 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3255, Invalid=6251, Unknown=0, NotChecked=0, Total=9506 [2022-12-14 16:06:44,169 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1695 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:44,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 0 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 16:06:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30032 states. [2022-12-14 16:06:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30032 to 2920. [2022-12-14 16:06:44,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2917 states have (on average 4.162152896811793) internal successors, (12141), 2919 states have internal predecessors, (12141), 0 states have call successors, (0), 0 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 16:06:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 12141 transitions. [2022-12-14 16:06:44,414 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 12141 transitions. Word has length 20 [2022-12-14 16:06:44,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:44,414 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 12141 transitions. [2022-12-14 16:06:44,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:44,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 12141 transitions. [2022-12-14 16:06:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 16:06:44,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:44,416 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:44,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-12-14 16:06:44,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:44,618 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:44,618 INFO L85 PathProgramCache]: Analyzing trace with hash -940332998, now seen corresponding path program 27 times [2022-12-14 16:06:44,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:44,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486343850] [2022-12-14 16:06:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:44,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:44,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:44,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486343850] [2022-12-14 16:06:44,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486343850] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:44,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750208709] [2022-12-14 16:06:44,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 16:06:44,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:44,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:44,776 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:44,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-12-14 16:06:44,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 16:06:44,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 16:06:44,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 16:06:44,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:45,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:06:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:45,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750208709] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:45,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [112057426] [2022-12-14 16:06:45,348 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 16:06:45,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:06:45,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-12-14 16:06:45,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084266193] [2022-12-14 16:06:45,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:06:45,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 16:06:45,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:45,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 16:06:45,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=1369, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 16:06:45,349 INFO L87 Difference]: Start difference. First operand 2920 states and 12141 transitions. Second operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:47,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:47,658 INFO L93 Difference]: Finished difference Result 32680 states and 122281 transitions. [2022-12-14 16:06:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-14 16:06:47,659 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 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 20 [2022-12-14 16:06:47,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:47,737 INFO L225 Difference]: With dead ends: 32680 [2022-12-14 16:06:47,737 INFO L226 Difference]: Without dead ends: 32659 [2022-12-14 16:06:47,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3631 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3489, Invalid=6611, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 16:06:47,739 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2011 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:47,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 0 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 16:06:47,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32659 states. [2022-12-14 16:06:48,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32659 to 2522. [2022-12-14 16:06:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2521 states have (on average 3.9873066243554147) internal successors, (10052), 2521 states have internal predecessors, (10052), 0 states have call successors, (0), 0 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 16:06:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 10052 transitions. [2022-12-14 16:06:48,017 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 10052 transitions. Word has length 20 [2022-12-14 16:06:48,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:48,017 INFO L495 AbstractCegarLoop]: Abstraction has 2522 states and 10052 transitions. [2022-12-14 16:06:48,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 16:06:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 10052 transitions. [2022-12-14 16:06:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 16:06:48,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:06:48,020 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:48,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-12-14 16:06:48,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-12-14 16:06:48,221 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 16:06:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:06:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1772944893, now seen corresponding path program 4 times [2022-12-14 16:06:48,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:06:48,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27690512] [2022-12-14 16:06:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:48,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:06:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:06:48,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:06:48,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27690512] [2022-12-14 16:06:48,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27690512] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:06:48,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907664612] [2022-12-14 16:06:48,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 16:06:48,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:48,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:48,698 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:48,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-12-14 16:06:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:06:48,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 16:06:48,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:06:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 16:06:49,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:06:49,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907664612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:06:49,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:06:49,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [23] total 42 [2022-12-14 16:06:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244485769] [2022-12-14 16:06:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:06:49,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 16:06:49,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:06:49,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 16:06:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1463, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 16:06:49,022 INFO L87 Difference]: Start difference. First operand 2522 states and 10052 transitions. Second operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 16:06:49,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:06:49,199 INFO L93 Difference]: Finished difference Result 1822 states and 7152 transitions. [2022-12-14 16:06:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 16:06:49,200 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-12-14 16:06:49,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:06:49,200 INFO L225 Difference]: With dead ends: 1822 [2022-12-14 16:06:49,200 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 16:06:49,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1463, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 16:06:49,201 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:06:49,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:06:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 16:06:49,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 16:06:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:06:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 16:06:49,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-12-14 16:06:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:06:49,201 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 16:06:49,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 16:06:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 16:06:49,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2022-12-14 16:06:49,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2022-12-14 16:06:49,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2022-12-14 16:06:49,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-12-14 16:06:49,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-12-14 16:06:49,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-12-14 16:06:49,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-12-14 16:06:49,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-12-14 16:06:49,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-12-14 16:06:49,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-12-14 16:06:49,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-12-14 16:06:49,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-12-14 16:06:49,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-12-14 16:06:49,412 INFO L445 BasicCegarLoop]: Path program histogram: [27, 12, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:06:49,423 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 16:06:49,424 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 16:06:49,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:06:49 BasicIcfg [2022-12-14 16:06:49,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 16:06:49,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 16:06:49,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 16:06:49,430 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 16:06:49,430 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:04:31" (3/4) ... [2022-12-14 16:06:49,432 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 16:06:49,437 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-12-14 16:06:49,437 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-12-14 16:06:49,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-14 16:06:49,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-14 16:06:49,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 16:06:49,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 16:06:49,459 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 16:06:49,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 16:06:49,459 INFO L158 Benchmark]: Toolchain (without parser) took 138598.36ms. Allocated memory was 146.8MB in the beginning and 4.7GB in the end (delta: 4.6GB). Free memory was 92.3MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2022-12-14 16:06:49,459 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 146.8MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:06:49,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.66ms. Allocated memory is still 146.8MB. Free memory was 92.3MB in the beginning and 72.2MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 16:06:49,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.13ms. Allocated memory is still 146.8MB. Free memory was 72.2MB in the beginning and 70.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:06:49,460 INFO L158 Benchmark]: Boogie Preprocessor took 18.33ms. Allocated memory is still 146.8MB. Free memory was 70.1MB in the beginning and 68.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:06:49,460 INFO L158 Benchmark]: RCFGBuilder took 390.30ms. Allocated memory is still 146.8MB. Free memory was 68.6MB in the beginning and 52.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 16:06:49,460 INFO L158 Benchmark]: TraceAbstraction took 137754.35ms. Allocated memory was 146.8MB in the beginning and 4.7GB in the end (delta: 4.6GB). Free memory was 51.8MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2022-12-14 16:06:49,460 INFO L158 Benchmark]: Witness Printer took 29.35ms. Allocated memory is still 4.7GB. Free memory was 2.3GB in the beginning and 2.3GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:06:49,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 146.8MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.66ms. Allocated memory is still 146.8MB. Free memory was 92.3MB in the beginning and 72.2MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.13ms. Allocated memory is still 146.8MB. Free memory was 72.2MB in the beginning and 70.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.33ms. Allocated memory is still 146.8MB. Free memory was 70.1MB in the beginning and 68.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 390.30ms. Allocated memory is still 146.8MB. Free memory was 68.6MB in the beginning and 52.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 137754.35ms. Allocated memory was 146.8MB in the beginning and 4.7GB in the end (delta: 4.6GB). Free memory was 51.8MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Witness Printer took 29.35ms. Allocated memory is still 4.7GB. Free memory was 2.3GB in the beginning and 2.3GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 120 PlacesBefore, 31 PlacesAfterwards, 120 TransitionsBefore, 27 TransitionsAfterwards, 3978 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 74 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 115 TotalNumberOfCompositions, 3351 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3021, independent: 3010, independent conditional: 0, independent unconditional: 3010, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2320, independent: 2313, independent conditional: 0, independent unconditional: 2313, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2320, independent: 2313, independent conditional: 0, independent unconditional: 2313, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 21, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3021, independent: 697, independent conditional: 0, independent unconditional: 697, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 2320, unknown conditional: 0, unknown unconditional: 2320] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 705]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 705]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 689]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 689]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 687]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 687]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 695]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 695]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 148 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 137.6s, OverallIterations: 59, TraceHistogramMax: 22, PathProgramHistogramMax: 27, EmptinessCheckTime: 0.3s, AutomataDifference: 76.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55202 SdHoareTripleChecker+Valid, 20.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55202 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 17.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5966 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31096 IncrementalHoareTripleChecker+Invalid, 37062 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5966 mSolverCounterUnsat, 0 mSDtfsCounter, 31096 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3508 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 3038 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83537 ImplicationChecksByTransitivity, 50.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33058occurred in iteration=37, InterpolantAutomatonStates: 2053, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 23.9s AutomataMinimizationTime, 59 MinimizatonAttempts, 880611 StatesRemovedByMinimization, 53 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 1611 NumberOfCodeBlocks, 1611 NumberOfCodeBlocksAsserted, 176 NumberOfCheckSat, 2163 ConstructedInterpolants, 0 QuantifiedInterpolants, 17517 SizeOfPredicates, 16 NumberOfNonLiveVariables, 9734 ConjunctsInSsa, 622 ConjunctsInUnsatCore, 156 InterpolantComputations, 14 PerfectInterpolantSequences, 341/3990 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 16:06:49,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f6f0197-0d61-48e0-ad68-9d3bafef6fe8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE