./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs --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 1458378674bd140ace04512980940eeb05aa22f50528a181d147a292aa3349d2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:39:36,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:39:36,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:39:36,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:39:36,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:39:36,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:39:36,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:39:36,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:39:36,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:39:36,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:39:36,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:39:36,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:39:36,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:39:36,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:39:36,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:39:36,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:39:36,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:39:36,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:39:36,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:39:36,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:39:36,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:39:36,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:39:36,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:39:36,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:39:36,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:39:36,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:39:36,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:39:36,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:39:36,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:39:36,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:39:36,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:39:36,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:39:36,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:39:36,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:39:36,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:39:36,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:39:36,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:39:36,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:39:36,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:39:36,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:39:36,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:39:36,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:39:36,625 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:39:36,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:39:36,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:39:36,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:39:36,627 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:39:36,627 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:39:36,627 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:39:36,628 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:39:36,628 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:39:36,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:39:36,628 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:39:36,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:39:36,629 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:39:36,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:39:36,630 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:39:36,630 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:39:36,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:39:36,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:39:36,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:39:36,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:39:36,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:39:36,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:39:36,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:39:36,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:39:36,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:39:36,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:39:36,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:39:36,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:39:36,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:39:36,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:39:36,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:39:36,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:39:36,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:39:36,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:39:36,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:39:36,637 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:39:36,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:39:36,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:39:36,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:39:36,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:39:36,639 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1458378674bd140ace04512980940eeb05aa22f50528a181d147a292aa3349d2 [2021-11-19 13:39:36,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:39:37,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:39:37,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:39:37,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:39:37,019 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:39:37,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i [2021-11-19 13:39:37,118 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/data/1b3ca7692/9eca37ab19914ec9a8a3ed0e9cada38d/FLAGd4f5ea307 [2021-11-19 13:39:37,771 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:39:37,772 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i [2021-11-19 13:39:37,789 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/data/1b3ca7692/9eca37ab19914ec9a8a3ed0e9cada38d/FLAGd4f5ea307 [2021-11-19 13:39:38,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/data/1b3ca7692/9eca37ab19914ec9a8a3ed0e9cada38d [2021-11-19 13:39:38,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:39:38,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:39:38,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:39:38,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:39:38,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:39:38,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:38,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a313c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38, skipping insertion in model container [2021-11-19 13:39:38,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:38,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:39:38,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:39:38,558 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_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i[23469,23482] [2021-11-19 13:39:38,739 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:39:38,754 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:39:38,782 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_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i[23469,23482] [2021-11-19 13:39:38,829 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:39:38,878 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:39:38,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38 WrapperNode [2021-11-19 13:39:38,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:39:38,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:39:38,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:39:38,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:39:38,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:38,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:39,016 INFO L137 Inliner]: procedures = 145, calls = 279, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 549 [2021-11-19 13:39:39,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:39:39,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:39:39,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:39:39,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:39:39,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:39,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:39,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:39,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:39,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:39,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:39,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:39,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:39:39,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:39:39,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:39:39,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:39:39,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (1/1) ... [2021-11-19 13:39:39,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:39:39,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:39:39,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:39:39,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:39:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 13:39:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 13:39:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:39:39,256 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:39:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:39:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:39:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:39:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2021-11-19 13:39:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2021-11-19 13:39:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:39:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2021-11-19 13:39:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2021-11-19 13:39:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-19 13:39:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-19 13:39:39,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:39:39,258 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2021-11-19 13:39:39,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2021-11-19 13:39:39,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:39:39,258 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2021-11-19 13:39:39,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2021-11-19 13:39:39,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:39:39,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:39:39,569 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:39:39,571 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:39:40,024 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume !(0 != ~__CS_ret~0 % 256); [2021-11-19 13:39:40,024 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume 0 != ~__CS_ret~0 % 256;reader_#res#1.base, reader_#res#1.offset := 0, 0; [2021-11-19 13:39:42,703 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:39:42,860 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:39:42,861 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 13:39:42,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:42 BoogieIcfgContainer [2021-11-19 13:39:42,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:39:42,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:39:42,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:39:42,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:39:42,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:39:38" (1/3) ... [2021-11-19 13:39:42,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267cbf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:42, skipping insertion in model container [2021-11-19 13:39:42,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:38" (2/3) ... [2021-11-19 13:39:42,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267cbf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:42, skipping insertion in model container [2021-11-19 13:39:42,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:42" (3/3) ... [2021-11-19 13:39:42,874 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_read_write_lock-2.i [2021-11-19 13:39:42,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:39:42,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:39:42,949 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:39:42,955 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:39:42,955 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:39:42,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 84 states have (on average 1.369047619047619) internal successors, (115), 85 states have internal predecessors, (115), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-19 13:39:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 13:39:43,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:43,006 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:43,007 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:43,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash 822227597, now seen corresponding path program 1 times [2021-11-19 13:39:43,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:39:43,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293433519] [2021-11-19 13:39:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:43,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:39:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-19 13:39:43,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:39:43,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293433519] [2021-11-19 13:39:43,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293433519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:43,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:43,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:39:43,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460637274] [2021-11-19 13:39:43,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:43,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:39:43,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:39:43,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:39:43,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:39:43,691 INFO L87 Difference]: Start difference. First operand has 145 states, 84 states have (on average 1.369047619047619) internal successors, (115), 85 states have internal predecessors, (115), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-19 13:39:45,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:39:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:46,151 INFO L93 Difference]: Finished difference Result 289 states and 447 transitions. [2021-11-19 13:39:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:39:46,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 69 [2021-11-19 13:39:46,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:46,171 INFO L225 Difference]: With dead ends: 289 [2021-11-19 13:39:46,176 INFO L226 Difference]: Without dead ends: 250 [2021-11-19 13:39:46,197 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:39:46,201 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 180 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:46,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 736 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 13:39:46,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-19 13:39:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-11-19 13:39:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 145 states have (on average 1.3862068965517242) internal successors, (201), 146 states have internal predecessors, (201), 91 states have call successors, (91), 12 states have call predecessors, (91), 12 states have return successors, (99), 90 states have call predecessors, (99), 91 states have call successors, (99) [2021-11-19 13:39:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 391 transitions. [2021-11-19 13:39:46,386 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 391 transitions. Word has length 69 [2021-11-19 13:39:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:46,387 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 391 transitions. [2021-11-19 13:39:46,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-19 13:39:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 391 transitions. [2021-11-19 13:39:46,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 13:39:46,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:46,406 INFO L514 BasicCegarLoop]: trace histogram [19, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:46,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:39:46,406 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:46,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash 374279635, now seen corresponding path program 1 times [2021-11-19 13:39:46,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:39:46,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664982547] [2021-11-19 13:39:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:46,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:39:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-19 13:39:46,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:39:46,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664982547] [2021-11-19 13:39:46,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664982547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:46,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:46,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:39:46,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345065662] [2021-11-19 13:39:46,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:46,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:39:46,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:39:46,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:39:46,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:39:46,732 INFO L87 Difference]: Start difference. First operand 249 states and 391 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 13:39:48,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:39:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:49,334 INFO L93 Difference]: Finished difference Result 458 states and 723 transitions. [2021-11-19 13:39:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:39:49,340 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), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2021-11-19 13:39:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:49,353 INFO L225 Difference]: With dead ends: 458 [2021-11-19 13:39:49,353 INFO L226 Difference]: Without dead ends: 419 [2021-11-19 13:39:49,357 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:39:49,359 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 184 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:49,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 551 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 104 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 13:39:49,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-19 13:39:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 409. [2021-11-19 13:39:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 239 states have (on average 1.3765690376569037) internal successors, (329), 244 states have internal predecessors, (329), 146 states have call successors, (146), 20 states have call predecessors, (146), 23 states have return successors, (177), 144 states have call predecessors, (177), 146 states have call successors, (177) [2021-11-19 13:39:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 652 transitions. [2021-11-19 13:39:49,447 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 652 transitions. Word has length 122 [2021-11-19 13:39:49,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:49,447 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 652 transitions. [2021-11-19 13:39:49,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 13:39:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 652 transitions. [2021-11-19 13:39:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 13:39:49,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:49,457 INFO L514 BasicCegarLoop]: trace histogram [19, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:49,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:39:49,457 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:49,458 INFO L85 PathProgramCache]: Analyzing trace with hash -253312791, now seen corresponding path program 1 times [2021-11-19 13:39:49,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:39:49,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183771960] [2021-11-19 13:39:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:49,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:39:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-19 13:39:49,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:39:49,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183771960] [2021-11-19 13:39:49,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183771960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:49,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:49,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:39:49,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383745605] [2021-11-19 13:39:49,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:49,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:39:49,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:39:49,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:39:49,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:39:49,714 INFO L87 Difference]: Start difference. First operand 409 states and 652 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 13:39:51,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:39:52,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:52,109 INFO L93 Difference]: Finished difference Result 564 states and 885 transitions. [2021-11-19 13:39:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:39:52,110 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), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2021-11-19 13:39:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:52,117 INFO L225 Difference]: With dead ends: 564 [2021-11-19 13:39:52,117 INFO L226 Difference]: Without dead ends: 425 [2021-11-19 13:39:52,120 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:39:52,122 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 158 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:52,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 605 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 13:39:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-19 13:39:52,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 413. [2021-11-19 13:39:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 241 states have (on average 1.3734439834024896) internal successors, (331), 248 states have internal predecessors, (331), 146 states have call successors, (146), 20 states have call predecessors, (146), 25 states have return successors, (186), 144 states have call predecessors, (186), 146 states have call successors, (186) [2021-11-19 13:39:52,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 663 transitions. [2021-11-19 13:39:52,227 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 663 transitions. Word has length 122 [2021-11-19 13:39:52,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:52,231 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 663 transitions. [2021-11-19 13:39:52,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 13:39:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 663 transitions. [2021-11-19 13:39:52,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 13:39:52,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:52,242 INFO L514 BasicCegarLoop]: trace histogram [19, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:52,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:39:52,245 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash 199456286, now seen corresponding path program 1 times [2021-11-19 13:39:52,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:39:52,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123620042] [2021-11-19 13:39:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:52,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:39:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-19 13:39:52,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:39:52,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123620042] [2021-11-19 13:39:52,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123620042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:52,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:52,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:39:52,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492843339] [2021-11-19 13:39:52,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:52,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:39:52,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:39:52,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:39:52,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:39:52,485 INFO L87 Difference]: Start difference. First operand 413 states and 663 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 13:39:54,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:39:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:54,874 INFO L93 Difference]: Finished difference Result 795 states and 1248 transitions. [2021-11-19 13:39:54,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:39:54,875 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), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2021-11-19 13:39:54,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:54,881 INFO L225 Difference]: With dead ends: 795 [2021-11-19 13:39:54,882 INFO L226 Difference]: Without dead ends: 425 [2021-11-19 13:39:54,885 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:39:54,887 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 160 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:54,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 608 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 102 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 13:39:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-19 13:39:54,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 415. [2021-11-19 13:39:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 242 states have (on average 1.371900826446281) internal successors, (332), 250 states have internal predecessors, (332), 146 states have call successors, (146), 20 states have call predecessors, (146), 26 states have return successors, (186), 144 states have call predecessors, (186), 146 states have call successors, (186) [2021-11-19 13:39:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 664 transitions. [2021-11-19 13:39:54,942 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 664 transitions. Word has length 122 [2021-11-19 13:39:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:54,943 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 664 transitions. [2021-11-19 13:39:54,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 13:39:54,943 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 664 transitions. [2021-11-19 13:39:54,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 13:39:54,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:54,952 INFO L514 BasicCegarLoop]: trace histogram [19, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:54,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:39:54,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:54,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1211055634, now seen corresponding path program 1 times [2021-11-19 13:39:54,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:39:54,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765631847] [2021-11-19 13:39:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:54,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:39:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-19 13:39:55,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:39:55,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765631847] [2021-11-19 13:39:55,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765631847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:55,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:55,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:39:55,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388770830] [2021-11-19 13:39:55,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:55,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:39:55,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:39:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:39:55,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:39:55,107 INFO L87 Difference]: Start difference. First operand 415 states and 664 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 13:39:57,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:39:57,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:57,555 INFO L93 Difference]: Finished difference Result 823 states and 1300 transitions. [2021-11-19 13:39:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:39:57,556 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), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2021-11-19 13:39:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:57,562 INFO L225 Difference]: With dead ends: 823 [2021-11-19 13:39:57,562 INFO L226 Difference]: Without dead ends: 407 [2021-11-19 13:39:57,567 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:39:57,568 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 189 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:57,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 550 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 107 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 13:39:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-19 13:39:57,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 397. [2021-11-19 13:39:57,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 233 states have (on average 1.3476394849785407) internal successors, (314), 241 states have internal predecessors, (314), 136 states have call successors, (136), 20 states have call predecessors, (136), 27 states have return successors, (171), 135 states have call predecessors, (171), 136 states have call successors, (171) [2021-11-19 13:39:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 621 transitions. [2021-11-19 13:39:57,612 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 621 transitions. Word has length 122 [2021-11-19 13:39:57,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:57,613 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 621 transitions. [2021-11-19 13:39:57,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 13:39:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 621 transitions. [2021-11-19 13:39:57,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 13:39:57,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:57,622 INFO L514 BasicCegarLoop]: trace histogram [19, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:57,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:39:57,622 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:57,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash -401929291, now seen corresponding path program 1 times [2021-11-19 13:39:57,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:39:57,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435156907] [2021-11-19 13:39:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:57,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:39:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-19 13:39:57,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:39:57,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435156907] [2021-11-19 13:39:57,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435156907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:57,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:57,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:39:57,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990552744] [2021-11-19 13:39:57,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:57,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:39:57,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:39:57,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:39:57,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:39:57,751 INFO L87 Difference]: Start difference. First operand 397 states and 621 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 13:39:59,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:40:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:00,180 INFO L93 Difference]: Finished difference Result 703 states and 1094 transitions. [2021-11-19 13:40:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:40:00,181 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), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2021-11-19 13:40:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:00,185 INFO L225 Difference]: With dead ends: 703 [2021-11-19 13:40:00,186 INFO L226 Difference]: Without dead ends: 298 [2021-11-19 13:40:00,190 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:40:00,191 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 125 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:00,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 538 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 100 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 13:40:00,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-19 13:40:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 296. [2021-11-19 13:40:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 174 states have (on average 1.3620689655172413) internal successors, (237), 179 states have internal predecessors, (237), 101 states have call successors, (101), 16 states have call predecessors, (101), 20 states have return successors, (129), 100 states have call predecessors, (129), 101 states have call successors, (129) [2021-11-19 13:40:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 467 transitions. [2021-11-19 13:40:00,224 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 467 transitions. Word has length 122 [2021-11-19 13:40:00,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:00,225 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 467 transitions. [2021-11-19 13:40:00,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 13:40:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 467 transitions. [2021-11-19 13:40:00,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-19 13:40:00,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:00,233 INFO L514 BasicCegarLoop]: trace histogram [22, 8, 8, 8, 8, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:00,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:40:00,234 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:00,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:00,235 INFO L85 PathProgramCache]: Analyzing trace with hash -96150110, now seen corresponding path program 1 times [2021-11-19 13:40:00,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:40:00,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202213253] [2021-11-19 13:40:00,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:00,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:40:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2021-11-19 13:40:00,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:40:00,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202213253] [2021-11-19 13:40:00,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202213253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:40:00,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631958954] [2021-11-19 13:40:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:00,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:40:00,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:00,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:40:00,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:40:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:00,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:40:00,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:00,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:00,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-19 13:40:01,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-11-19 13:40:01,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-19 13:40:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2021-11-19 13:40:01,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:02,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-11-19 13:40:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2021-11-19 13:40:02,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631958954] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:40:02,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:40:02,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2021-11-19 13:40:02,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905179826] [2021-11-19 13:40:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:02,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:40:02,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:40:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:40:02,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:40:02,318 INFO L87 Difference]: Start difference. First operand 296 states and 467 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-19 13:40:04,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:40:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:04,710 INFO L93 Difference]: Finished difference Result 585 states and 909 transitions. [2021-11-19 13:40:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:40:04,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 173 [2021-11-19 13:40:04,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:04,715 INFO L225 Difference]: With dead ends: 585 [2021-11-19 13:40:04,715 INFO L226 Difference]: Without dead ends: 269 [2021-11-19 13:40:04,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:40:04,719 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 120 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:04,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 523 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 13:40:04,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-19 13:40:04,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 265. [2021-11-19 13:40:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 154 states have (on average 1.3571428571428572) internal successors, (209), 157 states have internal predecessors, (209), 93 states have call successors, (93), 15 states have call predecessors, (93), 17 states have return successors, (116), 92 states have call predecessors, (116), 93 states have call successors, (116) [2021-11-19 13:40:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 418 transitions. [2021-11-19 13:40:04,749 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 418 transitions. Word has length 173 [2021-11-19 13:40:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:04,749 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 418 transitions. [2021-11-19 13:40:04,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-19 13:40:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 418 transitions. [2021-11-19 13:40:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-19 13:40:04,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:04,757 INFO L514 BasicCegarLoop]: trace histogram [22, 8, 8, 8, 8, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:04,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:04,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-19 13:40:04,969 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1239967318, now seen corresponding path program 1 times [2021-11-19 13:40:04,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:40:04,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762771245] [2021-11-19 13:40:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:04,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:40:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2021-11-19 13:40:05,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:40:05,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762771245] [2021-11-19 13:40:05,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762771245] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:40:05,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26139754] [2021-11-19 13:40:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:05,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:40:05,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:05,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:40:05,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 13:40:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:06,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-19 13:40:06,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:06,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:06,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-19 13:40:06,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:06,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-19 13:40:06,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-11-19 13:40:06,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-11-19 13:40:06,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:06,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-11-19 13:40:06,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:06,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-11-19 13:40:06,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:06,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 288 [2021-11-19 13:40:07,224 INFO L354 Elim1Store]: treesize reduction 263, result has 30.1 percent of original size [2021-11-19 13:40:07,225 INFO L388 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 3 case distinctions, treesize of input 288 treesize of output 207 [2021-11-19 13:40:07,337 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:07,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 207 treesize of output 248 [2021-11-19 13:40:07,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:07,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-11-19 13:40:07,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:07,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-11-19 13:40:07,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:07,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-11-19 13:40:07,451 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-19 13:40:07,451 INFO L388 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 1 case distinctions, treesize of input 201 treesize of output 173 [2021-11-19 13:40:07,463 INFO L388 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 173 treesize of output 165 [2021-11-19 13:40:07,465 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 13:40:07,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-19 13:40:07,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-19 13:40:08,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:08,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:08,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:08,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:40:08,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2021-11-19 13:40:08,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:08,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:08,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:08,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:40:08,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2021-11-19 13:40:08,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-19 13:40:08,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-19 13:40:09,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-11-19 13:40:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 230 proven. 55 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-11-19 13:40:09,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:09,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 20 [2021-11-19 13:40:09,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 12 [2021-11-19 13:40:16,942 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 271 DAG size of output: 166 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 13:40:27,223 INFO L354 Elim1Store]: treesize reduction 253, result has 36.3 percent of original size [2021-11-19 13:40:27,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 806 treesize of output 569 [2021-11-19 13:40:27,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-19 13:40:27,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [940243444] [2021-11-19 13:40:27,295 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2021-11-19 13:40:27,295 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:40:27,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:40:27,315 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:40:27,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:40:27,432 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,436 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,437 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 13:40:27,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 13:40:27,440 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,441 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,444 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,445 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 881 [2021-11-19 13:40:27,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 882 [2021-11-19 13:40:27,448 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,449 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,452 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,453 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,456 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,457 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,458 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 13:40:27,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 13:40:27,460 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-19 13:40:27,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:40:27,462 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,464 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-19 13:40:27,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-19 13:40:27,466 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,467 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:40:27,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 13:40:27,469 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,470 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,473 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,474 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:40:27,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 13:40:27,476 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,477 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,479 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,481 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,481 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 881 [2021-11-19 13:40:27,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 882 [2021-11-19 13:40:27,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1067 [2021-11-19 13:40:27,486 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 13:40:27,489 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 454 [2021-11-19 13:40:27,496 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,497 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5199 [2021-11-19 13:40:27,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5200 [2021-11-19 13:40:27,500 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,502 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,505 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,506 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 977 [2021-11-19 13:40:27,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 978 [2021-11-19 13:40:27,510 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,511 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,514 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,515 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,515 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,518 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,519 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,521 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1178 [2021-11-19 13:40:27,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1179 [2021-11-19 13:40:27,527 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6433 [2021-11-19 13:40:27,532 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-19 13:40:27,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 13:40:27,536 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,537 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 13:40:27,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 13:40:27,540 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,542 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:40:27,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 13:40:27,544 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,546 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,546 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-19 13:40:27,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-19 13:40:27,548 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,550 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,550 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:40:27,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 13:40:27,552 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,553 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,556 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,557 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,558 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,559 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 13:40:27,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 13:40:27,560 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-19 13:40:27,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:40:27,562 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,563 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,564 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,565 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,567 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 881 [2021-11-19 13:40:27,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 882 [2021-11-19 13:40:27,569 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,570 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,573 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,574 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 881 [2021-11-19 13:40:27,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 882 [2021-11-19 13:40:27,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,578 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,581 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:40:27,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 13:40:27,585 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:40:27,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:27,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1067 [2021-11-19 13:40:27,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9326 [2021-11-19 13:40:27,623 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5a0eb550 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:571) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$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:116) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-19 13:40:27,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:40:27,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-19 13:40:27,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661612331] [2021-11-19 13:40:27,627 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 13:40:27,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:40:27,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:40:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:40:27,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:40:27,629 INFO L87 Difference]: Start difference. First operand 265 states and 418 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2021-11-19 13:40:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:40:27,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:40:27,630 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:27,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:40:27,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:27,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:40:27,856 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5a0eb550 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-19 13:40:27,858 INFO L158 Benchmark]: Toolchain (without parser) took 49800.69ms. Allocated memory was 98.6MB in the beginning and 201.3MB in the end (delta: 102.8MB). Free memory was 63.1MB in the beginning and 91.7MB in the end (delta: -28.6MB). Peak memory consumption was 74.0MB. Max. memory is 16.1GB. [2021-11-19 13:40:27,859 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:40:27,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 820.42ms. Allocated memory is still 98.6MB. Free memory was 62.9MB in the beginning and 58.9MB in the end (delta: 4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:40:27,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.75ms. Allocated memory is still 98.6MB. Free memory was 58.9MB in the beginning and 54.5MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 13:40:27,860 INFO L158 Benchmark]: Boogie Preprocessor took 132.79ms. Allocated memory is still 98.6MB. Free memory was 54.5MB in the beginning and 50.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 13:40:27,860 INFO L158 Benchmark]: RCFGBuilder took 3707.88ms. Allocated memory was 98.6MB in the beginning and 138.4MB in the end (delta: 39.8MB). Free memory was 50.6MB in the beginning and 59.2MB in the end (delta: -8.6MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2021-11-19 13:40:27,860 INFO L158 Benchmark]: TraceAbstraction took 44991.91ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 59.2MB in the beginning and 91.7MB in the end (delta: -32.6MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2021-11-19 13:40:27,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 820.42ms. Allocated memory is still 98.6MB. Free memory was 62.9MB in the beginning and 58.9MB in the end (delta: 4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 141.75ms. Allocated memory is still 98.6MB. Free memory was 58.9MB in the beginning and 54.5MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 132.79ms. Allocated memory is still 98.6MB. Free memory was 54.5MB in the beginning and 50.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 3707.88ms. Allocated memory was 98.6MB in the beginning and 138.4MB in the end (delta: 39.8MB). Free memory was 50.6MB in the beginning and 59.2MB in the end (delta: -8.6MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. * TraceAbstraction took 44991.91ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 59.2MB in the beginning and 91.7MB in the end (delta: -32.6MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5a0eb550 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5a0eb550: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-19 13:40:27,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs --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 1458378674bd140ace04512980940eeb05aa22f50528a181d147a292aa3349d2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:40:30,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:40:30,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:40:30,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:40:30,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:40:30,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:40:30,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:40:30,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:40:30,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:40:30,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:40:30,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:40:30,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:40:30,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:40:30,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:40:30,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:40:30,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:40:30,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:40:30,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:40:30,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:40:30,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:40:30,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:40:30,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:40:30,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:40:30,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:40:30,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:40:30,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:40:30,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:40:30,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:40:30,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:40:30,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:40:30,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:40:30,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:40:30,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:40:30,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:40:30,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:40:30,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:40:30,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:40:30,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:40:30,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:40:30,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:40:30,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:40:30,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:40:30,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:40:30,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:40:30,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:40:30,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:40:30,621 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:40:30,621 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:40:30,621 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:40:30,622 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:40:30,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:40:30,622 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:40:30,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:40:30,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:40:30,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:40:30,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:40:30,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:40:30,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:40:30,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:40:30,628 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:40:30,628 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:40:30,629 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:40:30,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:40:30,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:40:30,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:40:30,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:40:30,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:40:30,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:40:30,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:40:30,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:30,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:40:30,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:40:30,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:40:30,632 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:40:30,633 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:30,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:40:30,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:40:30,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:40:30,634 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_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1458378674bd140ace04512980940eeb05aa22f50528a181d147a292aa3349d2 [2021-11-19 13:40:31,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:40:31,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:40:31,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:40:31,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:40:31,121 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:40:31,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i [2021-11-19 13:40:31,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/data/cabac2b29/bb7c5f95e0054e86b3247ff39f7570f7/FLAG3c73f4a02 [2021-11-19 13:40:31,926 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:40:31,927 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i [2021-11-19 13:40:31,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/data/cabac2b29/bb7c5f95e0054e86b3247ff39f7570f7/FLAG3c73f4a02 [2021-11-19 13:40:32,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/data/cabac2b29/bb7c5f95e0054e86b3247ff39f7570f7 [2021-11-19 13:40:32,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:40:32,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:40:32,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:32,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:40:32,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:40:32,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:32" (1/1) ... [2021-11-19 13:40:32,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55688de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:32, skipping insertion in model container [2021-11-19 13:40:32,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:32" (1/1) ... [2021-11-19 13:40:32,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:40:32,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:32,755 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_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i[23469,23482] [2021-11-19 13:40:32,969 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:33,005 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:40:33,056 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_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i[23469,23482] [2021-11-19 13:40:33,130 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:33,187 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:40:33,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33 WrapperNode [2021-11-19 13:40:33,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:33,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:40:33,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:40:33,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:40:33,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33" (1/1) ... [2021-11-19 13:40:33,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33" (1/1) ... [2021-11-19 13:40:33,301 INFO L137 Inliner]: procedures = 149, calls = 279, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 542 [2021-11-19 13:40:33,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:40:33,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:40:33,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:40:33,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:40:33,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33" (1/1) ... [2021-11-19 13:40:33,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33" (1/1) ... [2021-11-19 13:40:33,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33" (1/1) ... [2021-11-19 13:40:33,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33" (1/1) ... [2021-11-19 13:40:33,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33" (1/1) ... [2021-11-19 13:40:33,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33" (1/1) ... [2021-11-19 13:40:33,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33" (1/1) ... [2021-11-19 13:40:33,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:40:33,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:40:33,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:40:33,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:40:33,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:33" (1/1) ... [2021-11-19 13:40:33,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:33,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:33,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:40:33,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:40:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:40:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:40:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:40:33,496 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:40:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:40:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:40:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:40:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2021-11-19 13:40:33,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2021-11-19 13:40:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:40:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2021-11-19 13:40:33,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2021-11-19 13:40:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-19 13:40:33,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-19 13:40:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:40:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:40:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:40:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:40:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:40:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2021-11-19 13:40:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2021-11-19 13:40:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2021-11-19 13:40:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2021-11-19 13:40:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:40:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:40:33,674 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:40:33,676 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:40:34,473 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2021-11-19 13:40:34,474 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv32, 0bv32; [2021-11-19 13:40:37,392 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:40:37,422 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:40:37,422 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 13:40:37,423 ERROR L335 CfgBuilder]: Unexpected successor node of atomic block begin: L694 is neither atomic block end nor a sink node. [2021-11-19 13:40:37,424 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Large block encoding incomplete: Is there illegal control flow (e.g. loops) within an atomic block? at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) 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) [2021-11-19 13:40:37,428 INFO L158 Benchmark]: Toolchain (without parser) took 5218.72ms. Allocated memory was 58.7MB in the beginning and 102.8MB in the end (delta: 44.0MB). Free memory was 35.5MB in the beginning and 67.4MB in the end (delta: -32.0MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2021-11-19 13:40:37,429 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 39.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:40:37,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 978.21ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 35.3MB in the beginning and 40.2MB in the end (delta: -4.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 13:40:37,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.83ms. Allocated memory is still 75.5MB. Free memory was 40.2MB in the beginning and 54.9MB in the end (delta: -14.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-11-19 13:40:37,431 INFO L158 Benchmark]: Boogie Preprocessor took 89.76ms. Allocated memory is still 75.5MB. Free memory was 54.9MB in the beginning and 51.0MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 13:40:37,432 INFO L158 Benchmark]: RCFGBuilder took 4032.77ms. Allocated memory was 75.5MB in the beginning and 102.8MB in the end (delta: 27.3MB). Free memory was 50.7MB in the beginning and 67.4MB in the end (delta: -16.8MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-11-19 13:40:37,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 39.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 978.21ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 35.3MB in the beginning and 40.2MB in the end (delta: -4.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 112.83ms. Allocated memory is still 75.5MB. Free memory was 40.2MB in the beginning and 54.9MB in the end (delta: -14.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.76ms. Allocated memory is still 75.5MB. Free memory was 54.9MB in the beginning and 51.0MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 4032.77ms. Allocated memory was 75.5MB in the beginning and 102.8MB in the end (delta: 27.3MB). Free memory was 50.7MB in the beginning and 67.4MB in the end (delta: -16.8MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Large block encoding incomplete: Is there illegal control flow (e.g. loops) within an atomic block? de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Large block encoding incomplete: Is there illegal control flow (e.g. loops) within an atomic block?: de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:304) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-19 13:40:37,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf7b330a-2cbf-4e04-bac8-c4a8e7b0ea5c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Large block encoding incomplete: Is there illegal control flow (e.g. loops) within an atomic block?