./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c6f82e874e2f980b653c53fa0437dd3390b1771d726d8f345336fe56afb2bb6 --- 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-5e519f3 [2022-11-03 03:50:43,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:50:43,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:50:43,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:50:43,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:50:43,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:50:43,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:50:43,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:50:43,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:50:43,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:50:43,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:50:43,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:50:43,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:50:43,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:50:43,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:50:43,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:50:43,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:50:43,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:50:43,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:50:43,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:50:43,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:50:43,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:50:43,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:50:43,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:50:43,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:50:43,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:50:43,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:50:43,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:50:43,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:50:43,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:50:43,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:50:43,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:50:43,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:50:43,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:50:43,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:50:43,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:50:43,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:50:43,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:50:43,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:50:43,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:50:43,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:50:43,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:50:43,850 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:50:43,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:50:43,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:50:43,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:50:43,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:50:43,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:50:43,853 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:50:43,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:50:43,853 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:50:43,854 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:50:43,855 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:50:43,855 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:50:43,855 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:50:43,855 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:50:43,855 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:50:43,856 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:50:43,856 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:50:43,856 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:50:43,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:50:43,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:50:43,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:50:43,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:50:43,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:50:43,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:50:43,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:50:43,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:50:43,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:50:43,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:50:43,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:50:43,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:50:43,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:50:43,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:50:43,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:50:43,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:50:43,860 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:50:43,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:50:43,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:50:43,861 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:50:43,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:50:43,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:50:43,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:50:43,862 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_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c6f82e874e2f980b653c53fa0437dd3390b1771d726d8f345336fe56afb2bb6 [2022-11-03 03:50:44,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:50:44,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:50:44,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:50:44,207 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:50:44,208 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:50:44,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c [2022-11-03 03:50:44,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/data/9496499a0/c832e1537d944c048895f71ca796a63c/FLAG3e4dc5b5d [2022-11-03 03:50:44,902 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:50:44,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c [2022-11-03 03:50:44,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/data/9496499a0/c832e1537d944c048895f71ca796a63c/FLAG3e4dc5b5d [2022-11-03 03:50:45,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/data/9496499a0/c832e1537d944c048895f71ca796a63c [2022-11-03 03:50:45,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:50:45,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:50:45,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:50:45,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:50:45,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:50:45,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:45,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebbd69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45, skipping insertion in model container [2022-11-03 03:50:45,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:45,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:50:45,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:50:45,666 WARN L230 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_b882c091-ab12-48a2-9315-bb549e31c6bc/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c[74369,74382] [2022-11-03 03:50:45,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:50:45,691 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:50:45,849 WARN L230 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_b882c091-ab12-48a2-9315-bb549e31c6bc/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c[74369,74382] [2022-11-03 03:50:45,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:50:45,871 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:50:45,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45 WrapperNode [2022-11-03 03:50:45,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:50:45,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:50:45,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:50:45,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:50:45,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:45,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:46,004 INFO L138 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 792 [2022-11-03 03:50:46,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:50:46,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:50:46,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:50:46,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:50:46,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:46,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:46,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:46,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:46,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:46,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:46,090 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:46,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:46,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:50:46,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:50:46,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:50:46,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:50:46,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (1/1) ... [2022-11-03 03:50:46,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:50:46,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:50:46,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:50:46,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:50:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:50:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:50:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:50:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:50:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:50:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:50:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:50:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:50:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:50:46,417 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:50:46,419 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:50:46,450 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:50:48,039 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-11-03 03:50:48,039 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-11-03 03:50:48,039 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:50:48,467 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:50:48,468 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:50:48,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:48 BoogieIcfgContainer [2022-11-03 03:50:48,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:50:48,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:50:48,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:50:48,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:50:48,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:50:45" (1/3) ... [2022-11-03 03:50:48,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f17d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:48, skipping insertion in model container [2022-11-03 03:50:48,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:45" (2/3) ... [2022-11-03 03:50:48,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f17d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:48, skipping insertion in model container [2022-11-03 03:50:48,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:48" (3/3) ... [2022-11-03 03:50:48,484 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.07.i.cil-2.c [2022-11-03 03:50:48,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:50:48,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:50:48,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:50:48,597 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;@6c284e90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:50:48,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:50:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 107 states have (on average 1.7570093457943925) internal successors, (188), 108 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 03:50:48,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:48,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:48,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1727946225, now seen corresponding path program 1 times [2022-11-03 03:50:48,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:48,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876621641] [2022-11-03 03:50:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:48,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:50:49,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:49,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876621641] [2022-11-03 03:50:49,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876621641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:49,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:49,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:49,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173065883] [2022-11-03 03:50:49,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:49,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:50:49,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:49,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:50:49,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:50:49,997 INFO L87 Difference]: Start difference. First operand has 109 states, 107 states have (on average 1.7570093457943925) internal successors, (188), 108 states have internal predecessors, (188), 0 states have call successors, (0), 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 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:52,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:52,570 INFO L93 Difference]: Finished difference Result 241 states and 416 transitions. [2022-11-03 03:50:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:50:52,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-03 03:50:52,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:52,583 INFO L225 Difference]: With dead ends: 241 [2022-11-03 03:50:52,584 INFO L226 Difference]: Without dead ends: 128 [2022-11-03 03:50:52,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:52,590 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 20 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:52,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 393 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 03:50:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-03 03:50:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2022-11-03 03:50:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 177 transitions. [2022-11-03 03:50:52,659 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 177 transitions. Word has length 29 [2022-11-03 03:50:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:52,659 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 177 transitions. [2022-11-03 03:50:52,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 177 transitions. [2022-11-03 03:50:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 03:50:52,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:52,662 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:52,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:50:52,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1758311644, now seen corresponding path program 1 times [2022-11-03 03:50:52,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:52,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226690360] [2022-11-03 03:50:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:52,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:50:53,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:53,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226690360] [2022-11-03 03:50:53,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226690360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:53,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:53,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:53,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850328346] [2022-11-03 03:50:53,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:53,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:50:53,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:53,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:50:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:50:53,315 INFO L87 Difference]: Start difference. First operand 116 states and 177 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 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) [2022-11-03 03:50:55,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:55,753 INFO L93 Difference]: Finished difference Result 232 states and 348 transitions. [2022-11-03 03:50:55,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:50:55,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 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 39 [2022-11-03 03:50:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:55,756 INFO L225 Difference]: With dead ends: 232 [2022-11-03 03:50:55,756 INFO L226 Difference]: Without dead ends: 128 [2022-11-03 03:50:55,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:55,758 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 19 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:55,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 325 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 148 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:50:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-03 03:50:55,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2022-11-03 03:50:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.5304347826086957) internal successors, (176), 115 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 176 transitions. [2022-11-03 03:50:55,773 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 176 transitions. Word has length 39 [2022-11-03 03:50:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:55,774 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 176 transitions. [2022-11-03 03:50:55,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 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) [2022-11-03 03:50:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 176 transitions. [2022-11-03 03:50:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 03:50:55,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:55,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:55,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:50:55,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:55,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:55,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1594262621, now seen corresponding path program 1 times [2022-11-03 03:50:55,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:55,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585135709] [2022-11-03 03:50:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:55,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:50:56,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:56,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585135709] [2022-11-03 03:50:56,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585135709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:56,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:56,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:56,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788431756] [2022-11-03 03:50:56,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:56,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:50:56,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:50:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:50:56,488 INFO L87 Difference]: Start difference. First operand 116 states and 176 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:58,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:59,151 INFO L93 Difference]: Finished difference Result 321 states and 487 transitions. [2022-11-03 03:50:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:50:59,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-11-03 03:50:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:59,154 INFO L225 Difference]: With dead ends: 321 [2022-11-03 03:50:59,154 INFO L226 Difference]: Without dead ends: 217 [2022-11-03 03:50:59,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:59,156 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 119 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:59,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 221 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 231 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:50:59,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-03 03:50:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 126. [2022-11-03 03:50:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.512) internal successors, (189), 125 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 189 transitions. [2022-11-03 03:50:59,198 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 189 transitions. Word has length 40 [2022-11-03 03:50:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:59,199 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 189 transitions. [2022-11-03 03:50:59,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 189 transitions. [2022-11-03 03:50:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 03:50:59,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:59,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:59,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:50:59,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:59,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash 937174827, now seen corresponding path program 1 times [2022-11-03 03:50:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:59,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005813659] [2022-11-03 03:50:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:59,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:50:59,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:59,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005813659] [2022-11-03 03:50:59,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005813659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:59,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:59,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:59,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981593825] [2022-11-03 03:50:59,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:59,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:50:59,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:59,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:50:59,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:50:59,840 INFO L87 Difference]: Start difference. First operand 126 states and 189 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:01,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:02,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:02,431 INFO L93 Difference]: Finished difference Result 331 states and 499 transitions. [2022-11-03 03:51:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:02,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-03 03:51:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:02,433 INFO L225 Difference]: With dead ends: 331 [2022-11-03 03:51:02,434 INFO L226 Difference]: Without dead ends: 217 [2022-11-03 03:51:02,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:02,435 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 117 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:02,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 221 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 231 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 03:51:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-03 03:51:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 127. [2022-11-03 03:51:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5) internal successors, (189), 126 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2022-11-03 03:51:02,461 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 41 [2022-11-03 03:51:02,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:02,461 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2022-11-03 03:51:02,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2022-11-03 03:51:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 03:51:02,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:02,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:02,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:51:02,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:02,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:02,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1600964730, now seen corresponding path program 1 times [2022-11-03 03:51:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:02,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109052044] [2022-11-03 03:51:02,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:02,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:02,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:02,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109052044] [2022-11-03 03:51:02,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109052044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:02,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:02,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:02,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33740836] [2022-11-03 03:51:02,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:02,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:02,937 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:04,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:05,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:05,334 INFO L93 Difference]: Finished difference Result 254 states and 375 transitions. [2022-11-03 03:51:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:05,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-03 03:51:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:05,337 INFO L225 Difference]: With dead ends: 254 [2022-11-03 03:51:05,337 INFO L226 Difference]: Without dead ends: 139 [2022-11-03 03:51:05,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:05,339 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 11 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:05,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 324 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:51:05,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-03 03:51:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 127. [2022-11-03 03:51:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.492063492063492) internal successors, (188), 126 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 188 transitions. [2022-11-03 03:51:05,355 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 188 transitions. Word has length 41 [2022-11-03 03:51:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:05,355 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 188 transitions. [2022-11-03 03:51:05,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:05,356 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 188 transitions. [2022-11-03 03:51:05,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 03:51:05,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:05,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:05,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:51:05,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:05,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:05,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1346880773, now seen corresponding path program 1 times [2022-11-03 03:51:05,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:05,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507824373] [2022-11-03 03:51:05,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:05,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:05,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:05,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507824373] [2022-11-03 03:51:05,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507824373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:05,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:05,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:05,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175940695] [2022-11-03 03:51:05,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:05,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:05,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:05,817 INFO L87 Difference]: Start difference. First operand 127 states and 188 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:07,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:08,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:08,255 INFO L93 Difference]: Finished difference Result 254 states and 374 transitions. [2022-11-03 03:51:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:08,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-03 03:51:08,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:08,258 INFO L225 Difference]: With dead ends: 254 [2022-11-03 03:51:08,258 INFO L226 Difference]: Without dead ends: 139 [2022-11-03 03:51:08,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:08,260 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 9 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:08,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 325 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 148 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:51:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-03 03:51:08,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 127. [2022-11-03 03:51:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.4841269841269842) internal successors, (187), 126 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 187 transitions. [2022-11-03 03:51:08,270 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 187 transitions. Word has length 41 [2022-11-03 03:51:08,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:08,271 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 187 transitions. [2022-11-03 03:51:08,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 187 transitions. [2022-11-03 03:51:08,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 03:51:08,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:08,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:08,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:51:08,273 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:08,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1885808468, now seen corresponding path program 1 times [2022-11-03 03:51:08,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:08,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482102177] [2022-11-03 03:51:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:08,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:08,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:08,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482102177] [2022-11-03 03:51:08,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482102177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:08,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:08,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:08,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629232083] [2022-11-03 03:51:08,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:08,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:08,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:08,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:08,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:08,724 INFO L87 Difference]: Start difference. First operand 127 states and 187 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 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) [2022-11-03 03:51:10,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:11,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:11,273 INFO L93 Difference]: Finished difference Result 332 states and 496 transitions. [2022-11-03 03:51:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:11,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 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 42 [2022-11-03 03:51:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:11,275 INFO L225 Difference]: With dead ends: 332 [2022-11-03 03:51:11,276 INFO L226 Difference]: Without dead ends: 217 [2022-11-03 03:51:11,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:11,277 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 112 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:11,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 221 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 231 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 03:51:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-03 03:51:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 131. [2022-11-03 03:51:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4846153846153847) internal successors, (193), 130 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 193 transitions. [2022-11-03 03:51:11,286 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 193 transitions. Word has length 42 [2022-11-03 03:51:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:11,286 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 193 transitions. [2022-11-03 03:51:11,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 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) [2022-11-03 03:51:11,287 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 193 transitions. [2022-11-03 03:51:11,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 03:51:11,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:11,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:11,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:51:11,289 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:11,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:11,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1091110920, now seen corresponding path program 1 times [2022-11-03 03:51:11,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:11,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483487761] [2022-11-03 03:51:11,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:11,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:11,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:11,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483487761] [2022-11-03 03:51:11,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483487761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:11,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:11,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:11,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447988753] [2022-11-03 03:51:11,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:11,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:11,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:11,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:11,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:11,773 INFO L87 Difference]: Start difference. First operand 131 states and 193 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 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) [2022-11-03 03:51:13,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:14,142 INFO L93 Difference]: Finished difference Result 260 states and 384 transitions. [2022-11-03 03:51:14,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:14,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 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 42 [2022-11-03 03:51:14,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:14,144 INFO L225 Difference]: With dead ends: 260 [2022-11-03 03:51:14,144 INFO L226 Difference]: Without dead ends: 141 [2022-11-03 03:51:14,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:14,146 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 11 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:14,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 328 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 03:51:14,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-03 03:51:14,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2022-11-03 03:51:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.476923076923077) internal successors, (192), 130 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:14,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 192 transitions. [2022-11-03 03:51:14,153 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 192 transitions. Word has length 42 [2022-11-03 03:51:14,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:14,154 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 192 transitions. [2022-11-03 03:51:14,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 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) [2022-11-03 03:51:14,154 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 192 transitions. [2022-11-03 03:51:14,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 03:51:14,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:14,156 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:14,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:51:14,156 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:14,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1618107046, now seen corresponding path program 1 times [2022-11-03 03:51:14,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:14,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503283885] [2022-11-03 03:51:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:14,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:14,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:14,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503283885] [2022-11-03 03:51:14,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503283885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:14,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:14,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:14,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651790770] [2022-11-03 03:51:14,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:14,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:14,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:14,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:14,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:14,631 INFO L87 Difference]: Start difference. First operand 131 states and 192 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:16,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:17,215 INFO L93 Difference]: Finished difference Result 336 states and 500 transitions. [2022-11-03 03:51:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:17,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-03 03:51:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:17,217 INFO L225 Difference]: With dead ends: 336 [2022-11-03 03:51:17,217 INFO L226 Difference]: Without dead ends: 217 [2022-11-03 03:51:17,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:17,218 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 113 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:17,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 221 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 231 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 03:51:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-03 03:51:17,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 131. [2022-11-03 03:51:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4615384615384615) internal successors, (190), 130 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 190 transitions. [2022-11-03 03:51:17,226 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 190 transitions. Word has length 43 [2022-11-03 03:51:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:17,226 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 190 transitions. [2022-11-03 03:51:17,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:17,227 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 190 transitions. [2022-11-03 03:51:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 03:51:17,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:17,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:17,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:51:17,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:17,229 INFO L85 PathProgramCache]: Analyzing trace with hash -939077214, now seen corresponding path program 1 times [2022-11-03 03:51:17,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:17,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402583273] [2022-11-03 03:51:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:17,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:17,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:17,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402583273] [2022-11-03 03:51:17,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402583273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:17,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:17,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:17,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513119686] [2022-11-03 03:51:17,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:17,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:17,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:17,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:17,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:17,683 INFO L87 Difference]: Start difference. First operand 131 states and 190 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:19,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:20,253 INFO L93 Difference]: Finished difference Result 351 states and 518 transitions. [2022-11-03 03:51:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:20,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-11-03 03:51:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:20,255 INFO L225 Difference]: With dead ends: 351 [2022-11-03 03:51:20,256 INFO L226 Difference]: Without dead ends: 232 [2022-11-03 03:51:20,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:20,257 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 96 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:20,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 242 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 236 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 03:51:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-03 03:51:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 157. [2022-11-03 03:51:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.4871794871794872) internal successors, (232), 156 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 232 transitions. [2022-11-03 03:51:20,270 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 232 transitions. Word has length 44 [2022-11-03 03:51:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:20,271 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 232 transitions. [2022-11-03 03:51:20,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:20,271 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 232 transitions. [2022-11-03 03:51:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 03:51:20,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:20,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:20,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:51:20,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash -952951858, now seen corresponding path program 1 times [2022-11-03 03:51:20,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:20,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347879141] [2022-11-03 03:51:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:20,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:20,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:20,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347879141] [2022-11-03 03:51:20,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347879141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:20,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:20,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:20,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929872749] [2022-11-03 03:51:20,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:20,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:20,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:20,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:20,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:20,722 INFO L87 Difference]: Start difference. First operand 157 states and 232 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2022-11-03 03:51:22,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:23,311 INFO L93 Difference]: Finished difference Result 388 states and 581 transitions. [2022-11-03 03:51:23,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:23,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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 45 [2022-11-03 03:51:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:23,313 INFO L225 Difference]: With dead ends: 388 [2022-11-03 03:51:23,313 INFO L226 Difference]: Without dead ends: 243 [2022-11-03 03:51:23,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:23,315 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 95 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:23,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 242 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 235 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:51:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-03 03:51:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 169. [2022-11-03 03:51:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.5178571428571428) internal successors, (255), 168 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 255 transitions. [2022-11-03 03:51:23,323 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 255 transitions. Word has length 45 [2022-11-03 03:51:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:23,324 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 255 transitions. [2022-11-03 03:51:23,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2022-11-03 03:51:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 255 transitions. [2022-11-03 03:51:23,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 03:51:23,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:23,325 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:23,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:51:23,326 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:23,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1794267519, now seen corresponding path program 1 times [2022-11-03 03:51:23,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:23,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100875737] [2022-11-03 03:51:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:23,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:23,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:23,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100875737] [2022-11-03 03:51:23,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100875737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:23,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:23,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:23,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106623062] [2022-11-03 03:51:23,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:23,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:23,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:23,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:23,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:23,751 INFO L87 Difference]: Start difference. First operand 169 states and 255 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:25,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:26,305 INFO L93 Difference]: Finished difference Result 427 states and 646 transitions. [2022-11-03 03:51:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:26,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-11-03 03:51:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:26,307 INFO L225 Difference]: With dead ends: 427 [2022-11-03 03:51:26,307 INFO L226 Difference]: Without dead ends: 270 [2022-11-03 03:51:26,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:26,308 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 84 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:26,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 242 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 237 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 03:51:26,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-03 03:51:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 206. [2022-11-03 03:51:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.5463414634146342) internal successors, (317), 205 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 317 transitions. [2022-11-03 03:51:26,317 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 317 transitions. Word has length 50 [2022-11-03 03:51:26,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:26,318 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 317 transitions. [2022-11-03 03:51:26,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:26,318 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 317 transitions. [2022-11-03 03:51:26,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 03:51:26,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:26,319 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:26,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:51:26,320 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:26,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:26,320 INFO L85 PathProgramCache]: Analyzing trace with hash 205244584, now seen corresponding path program 1 times [2022-11-03 03:51:26,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:26,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522784677] [2022-11-03 03:51:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:26,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:26,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:26,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522784677] [2022-11-03 03:51:26,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522784677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:26,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:26,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:26,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859466347] [2022-11-03 03:51:26,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:26,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:26,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:26,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:26,685 INFO L87 Difference]: Start difference. First operand 206 states and 317 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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) [2022-11-03 03:51:28,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:29,075 INFO L93 Difference]: Finished difference Result 434 states and 669 transitions. [2022-11-03 03:51:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:29,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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 51 [2022-11-03 03:51:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:29,078 INFO L225 Difference]: With dead ends: 434 [2022-11-03 03:51:29,078 INFO L226 Difference]: Without dead ends: 240 [2022-11-03 03:51:29,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:29,079 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 17 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:29,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 333 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:51:29,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-03 03:51:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 226. [2022-11-03 03:51:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.5422222222222222) internal successors, (347), 225 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 347 transitions. [2022-11-03 03:51:29,089 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 347 transitions. Word has length 51 [2022-11-03 03:51:29,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:29,089 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 347 transitions. [2022-11-03 03:51:29,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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) [2022-11-03 03:51:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 347 transitions. [2022-11-03 03:51:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 03:51:29,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:29,091 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:29,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:51:29,091 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:29,092 INFO L85 PathProgramCache]: Analyzing trace with hash 409417979, now seen corresponding path program 1 times [2022-11-03 03:51:29,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:29,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249990830] [2022-11-03 03:51:29,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:29,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:29,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:29,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249990830] [2022-11-03 03:51:29,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249990830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:29,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:29,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:29,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612760551] [2022-11-03 03:51:29,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:29,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:29,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:29,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:29,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:29,493 INFO L87 Difference]: Start difference. First operand 226 states and 347 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:31,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:31,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:31,907 INFO L93 Difference]: Finished difference Result 454 states and 698 transitions. [2022-11-03 03:51:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:31,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-11-03 03:51:31,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:31,910 INFO L225 Difference]: With dead ends: 454 [2022-11-03 03:51:31,910 INFO L226 Difference]: Without dead ends: 240 [2022-11-03 03:51:31,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:31,912 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 28 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:31,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 335 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 161 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:51:31,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-03 03:51:31,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 226. [2022-11-03 03:51:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.5377777777777777) internal successors, (346), 225 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 346 transitions. [2022-11-03 03:51:31,922 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 346 transitions. Word has length 61 [2022-11-03 03:51:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:31,923 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 346 transitions. [2022-11-03 03:51:31,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:31,923 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 346 transitions. [2022-11-03 03:51:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 03:51:31,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:31,924 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:31,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:51:31,925 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:31,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:31,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1451788195, now seen corresponding path program 1 times [2022-11-03 03:51:31,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:31,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598419145] [2022-11-03 03:51:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:31,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:32,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:32,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598419145] [2022-11-03 03:51:32,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598419145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:32,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:32,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:32,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898687688] [2022-11-03 03:51:32,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:32,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:32,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:32,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:32,345 INFO L87 Difference]: Start difference. First operand 226 states and 346 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:34,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:34,758 INFO L93 Difference]: Finished difference Result 452 states and 694 transitions. [2022-11-03 03:51:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:34,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-11-03 03:51:34,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:34,760 INFO L225 Difference]: With dead ends: 452 [2022-11-03 03:51:34,760 INFO L226 Difference]: Without dead ends: 238 [2022-11-03 03:51:34,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:34,761 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 22 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:34,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 337 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:51:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-03 03:51:34,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 226. [2022-11-03 03:51:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.5333333333333334) internal successors, (345), 225 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:34,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 345 transitions. [2022-11-03 03:51:34,772 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 345 transitions. Word has length 63 [2022-11-03 03:51:34,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:34,773 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 345 transitions. [2022-11-03 03:51:34,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 345 transitions. [2022-11-03 03:51:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 03:51:34,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:34,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:34,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:51:34,775 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:34,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:34,776 INFO L85 PathProgramCache]: Analyzing trace with hash -20162190, now seen corresponding path program 1 times [2022-11-03 03:51:34,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:34,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067451909] [2022-11-03 03:51:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:34,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:35,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:35,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067451909] [2022-11-03 03:51:35,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067451909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:35,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:35,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:35,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165595649] [2022-11-03 03:51:35,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:35,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:35,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:35,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:35,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:35,275 INFO L87 Difference]: Start difference. First operand 226 states and 345 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:37,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:37,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:37,871 INFO L93 Difference]: Finished difference Result 514 states and 783 transitions. [2022-11-03 03:51:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:37,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-11-03 03:51:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:37,874 INFO L225 Difference]: With dead ends: 514 [2022-11-03 03:51:37,874 INFO L226 Difference]: Without dead ends: 300 [2022-11-03 03:51:37,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:37,875 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 106 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:37,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 243 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 235 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:51:37,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-03 03:51:37,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 226. [2022-11-03 03:51:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.5155555555555555) internal successors, (341), 225 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 341 transitions. [2022-11-03 03:51:37,888 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 341 transitions. Word has length 63 [2022-11-03 03:51:37,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:37,888 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 341 transitions. [2022-11-03 03:51:37,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 341 transitions. [2022-11-03 03:51:37,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 03:51:37,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:37,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:37,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 03:51:37,890 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2063163995, now seen corresponding path program 1 times [2022-11-03 03:51:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:37,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682144125] [2022-11-03 03:51:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:37,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:51:38,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:38,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682144125] [2022-11-03 03:51:38,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682144125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:38,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:38,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099055363] [2022-11-03 03:51:38,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:38,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:38,604 INFO L87 Difference]: Start difference. First operand 226 states and 341 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:40,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:41,202 INFO L93 Difference]: Finished difference Result 448 states and 680 transitions. [2022-11-03 03:51:41,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:51:41,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-03 03:51:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:41,204 INFO L225 Difference]: With dead ends: 448 [2022-11-03 03:51:41,204 INFO L226 Difference]: Without dead ends: 234 [2022-11-03 03:51:41,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:41,206 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 116 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:41,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 234 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 268 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:51:41,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-03 03:51:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-11-03 03:51:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.4913793103448276) internal successors, (346), 232 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2022-11-03 03:51:41,216 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 64 [2022-11-03 03:51:41,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:41,216 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2022-11-03 03:51:41,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2022-11-03 03:51:41,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 03:51:41,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:41,217 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:41,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 03:51:41,218 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:41,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:41,218 INFO L85 PathProgramCache]: Analyzing trace with hash -901250162, now seen corresponding path program 1 times [2022-11-03 03:51:41,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:41,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259521074] [2022-11-03 03:51:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:41,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:41,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:41,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259521074] [2022-11-03 03:51:41,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259521074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:41,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:41,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:41,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862875241] [2022-11-03 03:51:41,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:41,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:41,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:41,626 INFO L87 Difference]: Start difference. First operand 233 states and 346 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:43,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:44,002 INFO L93 Difference]: Finished difference Result 458 states and 684 transitions. [2022-11-03 03:51:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:44,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-03 03:51:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:44,004 INFO L225 Difference]: With dead ends: 458 [2022-11-03 03:51:44,005 INFO L226 Difference]: Without dead ends: 237 [2022-11-03 03:51:44,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:44,006 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 19 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:44,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 347 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 03:51:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-03 03:51:44,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 233. [2022-11-03 03:51:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.4870689655172413) internal successors, (345), 232 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 345 transitions. [2022-11-03 03:51:44,017 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 345 transitions. Word has length 65 [2022-11-03 03:51:44,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:44,017 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 345 transitions. [2022-11-03 03:51:44,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 345 transitions. [2022-11-03 03:51:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 03:51:44,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:44,019 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:44,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 03:51:44,019 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:44,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:44,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1089341275, now seen corresponding path program 1 times [2022-11-03 03:51:44,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:44,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71373509] [2022-11-03 03:51:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:44,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:44,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71373509] [2022-11-03 03:51:44,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71373509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:44,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273302844] [2022-11-03 03:51:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:44,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:44,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:44,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:44,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:51:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:45,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:51:45,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:45,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:51:45,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273302844] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:45,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:51:45,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 5 [2022-11-03 03:51:45,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841694654] [2022-11-03 03:51:45,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:45,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:45,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:45,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:45,663 INFO L87 Difference]: Start difference. First operand 233 states and 345 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 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) [2022-11-03 03:51:47,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:47,855 INFO L93 Difference]: Finished difference Result 452 states and 675 transitions. [2022-11-03 03:51:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:47,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 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 69 [2022-11-03 03:51:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:47,858 INFO L225 Difference]: With dead ends: 452 [2022-11-03 03:51:47,858 INFO L226 Difference]: Without dead ends: 450 [2022-11-03 03:51:47,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:47,860 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 110 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:47,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 274 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 03:51:47,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-03 03:51:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 441. [2022-11-03 03:51:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.5045454545454546) internal successors, (662), 440 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 662 transitions. [2022-11-03 03:51:47,882 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 662 transitions. Word has length 69 [2022-11-03 03:51:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:47,883 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 662 transitions. [2022-11-03 03:51:47,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 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) [2022-11-03 03:51:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 662 transitions. [2022-11-03 03:51:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 03:51:47,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:47,885 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:47,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:48,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:48,108 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash -791504601, now seen corresponding path program 1 times [2022-11-03 03:51:48,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:48,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161145826] [2022-11-03 03:51:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:48,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:51:48,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:48,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161145826] [2022-11-03 03:51:48,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161145826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:48,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093472164] [2022-11-03 03:51:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:48,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:48,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:48,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:48,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:51:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:49,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:51:49,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:51:49,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-03 03:51:50,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093472164] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:50,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:51:50,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 5 [2022-11-03 03:51:50,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968701743] [2022-11-03 03:51:50,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:50,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:50,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:50,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:50,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:50,179 INFO L87 Difference]: Start difference. First operand 441 states and 662 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:52,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:52,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:52,384 INFO L93 Difference]: Finished difference Result 870 states and 1311 transitions. [2022-11-03 03:51:52,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:52,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 87 [2022-11-03 03:51:52,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:52,388 INFO L225 Difference]: With dead ends: 870 [2022-11-03 03:51:52,388 INFO L226 Difference]: Without dead ends: 868 [2022-11-03 03:51:52,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:52,390 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 111 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:52,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 276 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 03:51:52,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-11-03 03:51:52,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 864. [2022-11-03 03:51:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 1.5121668597914253) internal successors, (1305), 863 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1305 transitions. [2022-11-03 03:51:52,430 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1305 transitions. Word has length 87 [2022-11-03 03:51:52,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:52,431 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1305 transitions. [2022-11-03 03:51:52,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:52,431 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1305 transitions. [2022-11-03 03:51:52,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-03 03:51:52,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:52,433 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:52,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:52,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:52,648 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:52,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:52,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1284250435, now seen corresponding path program 1 times [2022-11-03 03:51:52,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:52,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830227115] [2022-11-03 03:51:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:52,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:51:53,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:53,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830227115] [2022-11-03 03:51:53,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830227115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:53,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647093206] [2022-11-03 03:51:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:53,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:53,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:53,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:53,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:51:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:54,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:51:54,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:51:54,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:51:54,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647093206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:54,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [548321271] [2022-11-03 03:51:54,991 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2022-11-03 03:51:54,991 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:51:54,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:51:55,002 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:51:55,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:51:56,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:56,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:59,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:59,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:59,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:59,553 INFO L244 Elim1Store]: Index analysis took 1256 ms [2022-11-03 04:02:02,021 WARN L234 SmtUtils]: Spent 10.04m on a formula simplification. DAG size of input: 468 DAG size of output: 159 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 04:02:02,022 INFO L356 Elim1Store]: treesize reduction 11083, result has 8.5 percent of original size [2022-11-03 04:02:02,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:02,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:02,227 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_688| input size 1484 context size 1484 output size 1484 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) 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:336) 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.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 04:02:02,230 INFO L158 Benchmark]: Toolchain (without parser) took 677056.92ms. Allocated memory was 109.1MB in the beginning and 408.9MB in the end (delta: 299.9MB). Free memory was 79.4MB in the beginning and 327.5MB in the end (delta: -248.0MB). Peak memory consumption was 254.7MB. Max. memory is 16.1GB. [2022-11-03 04:02:02,230 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 109.1MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:02:02,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 698.44ms. Allocated memory was 109.1MB in the beginning and 151.0MB in the end (delta: 41.9MB). Free memory was 79.2MB in the beginning and 105.6MB in the end (delta: -26.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 04:02:02,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.47ms. Allocated memory is still 151.0MB. Free memory was 105.6MB in the beginning and 100.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 04:02:02,231 INFO L158 Benchmark]: Boogie Preprocessor took 83.27ms. Allocated memory is still 151.0MB. Free memory was 100.9MB in the beginning and 93.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 04:02:02,232 INFO L158 Benchmark]: RCFGBuilder took 2371.62ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 93.7MB in the beginning and 131.6MB in the end (delta: -37.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-03 04:02:02,235 INFO L158 Benchmark]: TraceAbstraction took 673756.31ms. Allocated memory was 182.5MB in the beginning and 408.9MB in the end (delta: 226.5MB). Free memory was 130.6MB in the beginning and 327.5MB in the end (delta: -196.9MB). Peak memory consumption was 234.1MB. Max. memory is 16.1GB. [2022-11-03 04:02:02,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 109.1MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 698.44ms. Allocated memory was 109.1MB in the beginning and 151.0MB in the end (delta: 41.9MB). Free memory was 79.2MB in the beginning and 105.6MB in the end (delta: -26.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 141.47ms. Allocated memory is still 151.0MB. Free memory was 105.6MB in the beginning and 100.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.27ms. Allocated memory is still 151.0MB. Free memory was 100.9MB in the beginning and 93.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2371.62ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 93.7MB in the beginning and 131.6MB in the end (delta: -37.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 673756.31ms. Allocated memory was 182.5MB in the beginning and 408.9MB in the end (delta: 226.5MB). Free memory was 130.6MB in the beginning and 327.5MB in the end (delta: -196.9MB). Peak memory consumption was 234.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_688| input size 1484 context size 1484 output size 1484 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_688| input size 1484 context size 1484 output size 1484: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 04:02:02,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c6f82e874e2f980b653c53fa0437dd3390b1771d726d8f345336fe56afb2bb6 --- 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-5e519f3 [2022-11-03 04:02:04,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:02:04,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:02:04,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:02:04,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:02:04,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:02:04,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:02:04,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:02:04,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:02:04,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:02:04,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:02:04,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:02:04,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:02:04,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:02:04,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:02:04,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:02:04,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:02:04,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:02:04,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:02:04,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:02:04,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:02:04,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:02:04,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:02:04,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:02:04,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:02:04,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:02:04,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:02:04,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:02:04,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:02:04,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:02:04,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:02:04,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:02:04,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:02:04,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:02:04,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:02:04,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:02:04,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:02:04,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:02:04,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:02:04,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:02:04,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:02:04,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 04:02:04,772 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:02:04,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:02:04,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:02:04,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:02:04,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:02:04,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:02:04,776 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:02:04,776 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:02:04,776 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:02:04,776 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:02:04,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:02:04,778 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:02:04,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:02:04,780 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:02:04,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:02:04,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:02:04,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:02:04,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:02:04,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:02:04,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:02:04,781 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:02:04,782 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:02:04,782 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:02:04,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:02:04,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:02:04,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:02:04,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:02:04,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:02:04,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:02:04,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:02:04,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:02:04,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:02:04,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:02:04,785 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:02:04,785 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:02:04,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:02:04,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:02:04,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:02:04,786 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c6f82e874e2f980b653c53fa0437dd3390b1771d726d8f345336fe56afb2bb6 [2022-11-03 04:02:05,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:02:05,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:02:05,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:02:05,243 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:02:05,244 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:02:05,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c [2022-11-03 04:02:05,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/data/4c262bb79/5b96c457264b4b4299665c4409be7795/FLAG37714ea12 [2022-11-03 04:02:06,064 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:02:06,065 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c [2022-11-03 04:02:06,089 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/data/4c262bb79/5b96c457264b4b4299665c4409be7795/FLAG37714ea12 [2022-11-03 04:02:06,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/data/4c262bb79/5b96c457264b4b4299665c4409be7795 [2022-11-03 04:02:06,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:02:06,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:02:06,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:02:06,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:02:06,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:02:06,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:02:06" (1/1) ... [2022-11-03 04:02:06,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f1f3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:06, skipping insertion in model container [2022-11-03 04:02:06,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:02:06" (1/1) ... [2022-11-03 04:02:06,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:02:06,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:02:06,854 WARN L230 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_b882c091-ab12-48a2-9315-bb549e31c6bc/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c[74369,74382] [2022-11-03 04:02:06,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:02:06,879 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 04:02:06,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:02:06,991 WARN L230 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_b882c091-ab12-48a2-9315-bb549e31c6bc/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c[74369,74382] [2022-11-03 04:02:07,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:02:07,018 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:02:07,156 WARN L230 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_b882c091-ab12-48a2-9315-bb549e31c6bc/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c[74369,74382] [2022-11-03 04:02:07,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:02:07,176 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:02:07,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07 WrapperNode [2022-11-03 04:02:07,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:02:07,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:02:07,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:02:07,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:02:07,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,295 INFO L138 Inliner]: procedures = 35, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 762 [2022-11-03 04:02:07,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:02:07,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:02:07,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:02:07,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:02:07,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:02:07,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:02:07,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:02:07,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:02:07,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (1/1) ... [2022-11-03 04:02:07,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:02:07,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:02:07,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:02:07,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:02:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:02:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 04:02:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:02:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 04:02:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:02:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:02:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:02:07,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:02:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 04:02:07,733 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:02:07,735 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:02:07,755 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 04:02:15,668 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-11-03 04:02:15,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-11-03 04:02:15,669 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:02:15,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:02:15,677 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:02:15,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:02:15 BoogieIcfgContainer [2022-11-03 04:02:15,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:02:15,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:02:15,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:02:15,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:02:15,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:02:06" (1/3) ... [2022-11-03 04:02:15,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618947ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:02:15, skipping insertion in model container [2022-11-03 04:02:15,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:07" (2/3) ... [2022-11-03 04:02:15,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618947ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:02:15, skipping insertion in model container [2022-11-03 04:02:15,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:02:15" (3/3) ... [2022-11-03 04:02:15,689 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.07.i.cil-2.c [2022-11-03 04:02:15,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:02:15,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:02:15,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:02:15,768 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;@4c50be2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:02:15,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:02:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 04:02:15,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:15,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:15,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:15,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash -442385418, now seen corresponding path program 1 times [2022-11-03 04:02:15,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:15,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017748485] [2022-11-03 04:02:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:15,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:15,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:15,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:15,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:02:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:16,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:02:16,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:02:16,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:02:16,800 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:16,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017748485] [2022-11-03 04:02:16,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017748485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:16,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:16,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:02:16,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491610168] [2022-11-03 04:02:16,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:16,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:02:16,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:02:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:16,843 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:16,996 INFO L93 Difference]: Finished difference Result 427 states and 728 transitions. [2022-11-03 04:02:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:02:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-03 04:02:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:17,010 INFO L225 Difference]: With dead ends: 427 [2022-11-03 04:02:17,011 INFO L226 Difference]: Without dead ends: 261 [2022-11-03 04:02:17,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:17,018 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 201 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:17,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 461 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:02:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-03 04:02:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2022-11-03 04:02:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.5153846153846153) internal successors, (394), 260 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2022-11-03 04:02:17,076 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 37 [2022-11-03 04:02:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:17,077 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2022-11-03 04:02:17,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:17,078 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2022-11-03 04:02:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 04:02:17,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:17,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:17,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 04:02:17,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:02:17,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:17,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:17,306 INFO L85 PathProgramCache]: Analyzing trace with hash 242366870, now seen corresponding path program 1 times [2022-11-03 04:02:17,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:17,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086777555] [2022-11-03 04:02:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:17,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:17,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:17,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:17,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 04:02:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:18,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:02:18,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:02:18,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:02:18,244 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:18,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086777555] [2022-11-03 04:02:18,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086777555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:18,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:18,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:02:18,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874138457] [2022-11-03 04:02:18,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:18,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:02:18,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:18,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:02:18,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:18,248 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2022-11-03 04:02:18,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:18,735 INFO L93 Difference]: Finished difference Result 510 states and 781 transitions. [2022-11-03 04:02:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:02:18,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 54 [2022-11-03 04:02:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:18,739 INFO L225 Difference]: With dead ends: 510 [2022-11-03 04:02:18,739 INFO L226 Difference]: Without dead ends: 383 [2022-11-03 04:02:18,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:18,741 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:18,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 567 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:02:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-03 04:02:18,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-11-03 04:02:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.5052356020942408) internal successors, (575), 382 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) [2022-11-03 04:02:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 575 transitions. [2022-11-03 04:02:18,765 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 575 transitions. Word has length 54 [2022-11-03 04:02:18,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:18,766 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 575 transitions. [2022-11-03 04:02:18,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2022-11-03 04:02:18,767 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 575 transitions. [2022-11-03 04:02:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 04:02:18,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:18,770 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:18,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:18,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:02:18,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:18,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:18,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1040793707, now seen corresponding path program 1 times [2022-11-03 04:02:18,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:18,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927970708] [2022-11-03 04:02:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:18,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:18,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:18,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:18,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 04:02:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:19,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:02:19,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 04:02:19,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:02:19,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:19,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927970708] [2022-11-03 04:02:19,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927970708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:19,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:19,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:02:19,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721162888] [2022-11-03 04:02:19,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:19,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:02:19,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:02:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:19,869 INFO L87 Difference]: Start difference. First operand 383 states and 575 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:20,774 INFO L93 Difference]: Finished difference Result 752 states and 1140 transitions. [2022-11-03 04:02:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:02:20,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 76 [2022-11-03 04:02:20,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:20,777 INFO L225 Difference]: With dead ends: 752 [2022-11-03 04:02:20,777 INFO L226 Difference]: Without dead ends: 503 [2022-11-03 04:02:20,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:20,780 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 146 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:20,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 569 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 04:02:20,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-03 04:02:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-11-03 04:02:20,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.50398406374502) internal successors, (755), 502 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 755 transitions. [2022-11-03 04:02:20,804 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 755 transitions. Word has length 76 [2022-11-03 04:02:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:20,804 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 755 transitions. [2022-11-03 04:02:20,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 755 transitions. [2022-11-03 04:02:20,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 04:02:20,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:20,808 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:20,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:21,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:02:21,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:21,033 INFO L85 PathProgramCache]: Analyzing trace with hash -792001576, now seen corresponding path program 1 times [2022-11-03 04:02:21,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:21,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134175109] [2022-11-03 04:02:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:21,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:21,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:21,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:21,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 04:02:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:21,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:02:21,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 04:02:22,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:02:22,009 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:22,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134175109] [2022-11-03 04:02:22,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134175109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:22,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:22,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:02:22,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674191685] [2022-11-03 04:02:22,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:22,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:02:22,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:02:22,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:22,011 INFO L87 Difference]: Start difference. First operand 503 states and 755 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:22,752 INFO L93 Difference]: Finished difference Result 996 states and 1506 transitions. [2022-11-03 04:02:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:02:22,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 100 [2022-11-03 04:02:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:22,756 INFO L225 Difference]: With dead ends: 996 [2022-11-03 04:02:22,756 INFO L226 Difference]: Without dead ends: 627 [2022-11-03 04:02:22,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:22,758 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 152 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:22,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 572 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 04:02:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-03 04:02:22,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2022-11-03 04:02:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.5) internal successors, (939), 626 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:22,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 939 transitions. [2022-11-03 04:02:22,781 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 939 transitions. Word has length 100 [2022-11-03 04:02:22,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:22,782 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 939 transitions. [2022-11-03 04:02:22,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:22,782 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 939 transitions. [2022-11-03 04:02:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 04:02:22,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:22,786 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:22,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:23,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:02:23,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash 528158642, now seen corresponding path program 1 times [2022-11-03 04:02:23,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:23,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504376972] [2022-11-03 04:02:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:23,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:23,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:23,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:23,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 04:02:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:23,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:02:23,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 04:02:23,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:02:23,962 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:23,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504376972] [2022-11-03 04:02:23,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504376972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:23,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:23,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:02:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320649662] [2022-11-03 04:02:23,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:23,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:02:23,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:23,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:02:23,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:23,964 INFO L87 Difference]: Start difference. First operand 627 states and 939 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:24,595 INFO L93 Difference]: Finished difference Result 1242 states and 1871 transitions. [2022-11-03 04:02:24,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:02:24,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 117 [2022-11-03 04:02:24,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:24,599 INFO L225 Difference]: With dead ends: 1242 [2022-11-03 04:02:24,599 INFO L226 Difference]: Without dead ends: 749 [2022-11-03 04:02:24,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:24,601 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 149 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:24,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 569 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:02:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-03 04:02:24,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 749. [2022-11-03 04:02:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.4973262032085561) internal successors, (1120), 748 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:24,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1120 transitions. [2022-11-03 04:02:24,627 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1120 transitions. Word has length 117 [2022-11-03 04:02:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:24,629 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1120 transitions. [2022-11-03 04:02:24,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1120 transitions. [2022-11-03 04:02:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 04:02:24,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:24,634 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:24,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:24,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:02:24,860 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:24,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:24,861 INFO L85 PathProgramCache]: Analyzing trace with hash 686668759, now seen corresponding path program 1 times [2022-11-03 04:02:24,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:24,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824626192] [2022-11-03 04:02:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:24,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:24,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:24,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:24,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 04:02:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:25,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:02:25,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 04:02:25,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:02:25,876 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:25,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824626192] [2022-11-03 04:02:25,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824626192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:25,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:25,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:02:25,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518290166] [2022-11-03 04:02:25,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:25,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:02:25,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:02:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:25,877 INFO L87 Difference]: Start difference. First operand 749 states and 1120 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:26,654 INFO L93 Difference]: Finished difference Result 1487 states and 2235 transitions. [2022-11-03 04:02:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:02:26,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 129 [2022-11-03 04:02:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:26,658 INFO L225 Difference]: With dead ends: 1487 [2022-11-03 04:02:26,658 INFO L226 Difference]: Without dead ends: 872 [2022-11-03 04:02:26,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:26,662 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 151 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:26,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 571 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 04:02:26,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-03 04:02:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2022-11-03 04:02:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.4959816303099884) internal successors, (1303), 871 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1303 transitions. [2022-11-03 04:02:26,690 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1303 transitions. Word has length 129 [2022-11-03 04:02:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:26,691 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1303 transitions. [2022-11-03 04:02:26,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:26,692 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1303 transitions. [2022-11-03 04:02:26,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-03 04:02:26,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:26,696 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:26,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:26,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:02:26,918 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:26,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1133322389, now seen corresponding path program 1 times [2022-11-03 04:02:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:26,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150320255] [2022-11-03 04:02:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:26,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:26,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:26,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:26,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 04:02:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:27,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:02:27,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-03 04:02:28,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:02:28,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:28,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150320255] [2022-11-03 04:02:28,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150320255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:28,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:28,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:02:28,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829599686] [2022-11-03 04:02:28,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:28,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:02:28,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:28,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:02:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:28,062 INFO L87 Difference]: Start difference. First operand 872 states and 1303 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:28,923 INFO L93 Difference]: Finished difference Result 1731 states and 2596 transitions. [2022-11-03 04:02:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:02:28,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 160 [2022-11-03 04:02:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:28,928 INFO L225 Difference]: With dead ends: 1731 [2022-11-03 04:02:28,928 INFO L226 Difference]: Without dead ends: 993 [2022-11-03 04:02:28,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:28,930 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 146 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:28,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 566 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:02:28,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-11-03 04:02:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2022-11-03 04:02:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.495959595959596) internal successors, (1481), 990 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1481 transitions. [2022-11-03 04:02:28,978 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1481 transitions. Word has length 160 [2022-11-03 04:02:28,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:28,979 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1481 transitions. [2022-11-03 04:02:28,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1481 transitions. [2022-11-03 04:02:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-03 04:02:28,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:28,983 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:29,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:29,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:02:29,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:29,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:29,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1035961974, now seen corresponding path program 1 times [2022-11-03 04:02:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:29,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504052292] [2022-11-03 04:02:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:29,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:29,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:29,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:29,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 04:02:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:30,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 04:02:30,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:30,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:02:30,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:02:30,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 85 [2022-11-03 04:02:30,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 85 [2022-11-03 04:02:30,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-11-03 04:02:30,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-11-03 04:02:30,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 04:02:30,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 04:02:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-03 04:02:31,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:02:31,035 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:31,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504052292] [2022-11-03 04:02:31,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504052292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:31,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:31,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:02:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498369585] [2022-11-03 04:02:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:31,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:02:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:02:31,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:02:31,038 INFO L87 Difference]: Start difference. First operand 991 states and 1481 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:33,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:35,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:36,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:42,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:43,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:46,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:47,210 INFO L93 Difference]: Finished difference Result 1979 states and 2958 transitions. [2022-11-03 04:02:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:02:47,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 166 [2022-11-03 04:02:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:47,216 INFO L225 Difference]: With dead ends: 1979 [2022-11-03 04:02:47,216 INFO L226 Difference]: Without dead ends: 991 [2022-11-03 04:02:47,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:02:47,218 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:47,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 671 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 2 Unknown, 0 Unchecked, 16.1s Time] [2022-11-03 04:02:47,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-11-03 04:02:47,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-11-03 04:02:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.494949494949495) internal successors, (1480), 990 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1480 transitions. [2022-11-03 04:02:47,247 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1480 transitions. Word has length 166 [2022-11-03 04:02:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:47,247 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1480 transitions. [2022-11-03 04:02:47,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1480 transitions. [2022-11-03 04:02:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-03 04:02:47,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:47,250 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:47,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:47,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:02:47,472 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:47,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1534397000, now seen corresponding path program 1 times [2022-11-03 04:02:47,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:47,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460174368] [2022-11-03 04:02:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:47,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:47,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:47,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:47,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b882c091-ab12-48a2-9315-bb549e31c6bc/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 04:02:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:52,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 179 conjunts are in the unsatisfiable core [2022-11-03 04:02:52,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:52,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:52,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 67 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46713 treesize of output 39376 [2022-11-03 04:02:52,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:52,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:52,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:52,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 68 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16221 treesize of output 1708