./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longest-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_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/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_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/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_ac09e97d-df67-4524-b518-20203bfbf20f/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 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:19:12,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:19:12,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:19:12,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:19:12,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:19:12,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:19:12,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:19:12,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:19:12,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:19:12,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:19:12,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:19:12,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:19:12,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:19:12,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:19:12,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:19:12,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:19:12,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:19:12,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:19:12,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:19:12,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:19:12,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:19:12,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:19:12,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:19:12,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:19:12,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:19:12,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:19:12,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:19:12,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:19:12,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:19:12,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:19:12,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:19:12,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:19:12,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:19:12,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:19:12,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:19:12,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:19:12,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:19:12,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:19:12,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:19:12,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:19:12,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:19:12,300 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:19:12,354 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:19:12,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:19:12,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:19:12,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:19:12,358 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:19:12,358 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:19:12,358 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:19:12,359 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:19:12,359 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:19:12,359 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:19:12,361 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:19:12,361 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:19:12,361 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:19:12,362 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:19:12,362 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:19:12,362 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:19:12,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:19:12,363 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:19:12,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:19:12,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:19:12,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:19:12,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:19:12,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:19:12,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:19:12,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:19:12,365 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:19:12,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:19:12,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:19:12,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:19:12,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:19:12,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:19:12,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:12,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:19:12,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:19:12,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:19:12,368 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:19:12,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:19:12,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:19:12,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:19:12,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:19:12,370 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_ac09e97d-df67-4524-b518-20203bfbf20f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2021-11-19 13:19:12,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:19:12,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:19:12,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:19:12,807 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:19:12,808 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:19:12,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/pthread/stack_longest-2.i [2021-11-19 13:19:12,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/data/06470d93b/50938c51097b4b1dacbec9dd01e19544/FLAG51be26943 [2021-11-19 13:19:13,663 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:19:13,664 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/sv-benchmarks/c/pthread/stack_longest-2.i [2021-11-19 13:19:13,692 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/data/06470d93b/50938c51097b4b1dacbec9dd01e19544/FLAG51be26943 [2021-11-19 13:19:13,870 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/data/06470d93b/50938c51097b4b1dacbec9dd01e19544 [2021-11-19 13:19:13,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:19:13,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:19:13,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:13,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:19:13,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:19:13,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:13" (1/1) ... [2021-11-19 13:19:13,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b82ec2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:13, skipping insertion in model container [2021-11-19 13:19:13,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:13" (1/1) ... [2021-11-19 13:19:13,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:19:13,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:19:14,749 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_ac09e97d-df67-4524-b518-20203bfbf20f/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2021-11-19 13:19:14,789 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:14,802 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:19:14,860 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_ac09e97d-df67-4524-b518-20203bfbf20f/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2021-11-19 13:19:14,888 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:14,970 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:19:14,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14 WrapperNode [2021-11-19 13:19:14,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:14,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:19:14,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:19:14,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:19:14,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (1/1) ... [2021-11-19 13:19:15,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (1/1) ... [2021-11-19 13:19:15,058 INFO L137 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 148 [2021-11-19 13:19:15,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:19:15,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:19:15,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:19:15,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:19:15,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (1/1) ... [2021-11-19 13:19:15,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (1/1) ... [2021-11-19 13:19:15,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (1/1) ... [2021-11-19 13:19:15,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (1/1) ... [2021-11-19 13:19:15,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (1/1) ... [2021-11-19 13:19:15,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (1/1) ... [2021-11-19 13:19:15,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (1/1) ... [2021-11-19 13:19:15,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:19:15,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:19:15,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:19:15,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:19:15,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (1/1) ... [2021-11-19 13:19:15,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:15,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:15,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:19:15,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:19:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-11-19 13:19:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-11-19 13:19:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-11-19 13:19:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-11-19 13:19:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:19:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:19:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 13:19:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 13:19:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-19 13:19:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:19:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:19:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:19:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:19:15,228 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 13:19:15,399 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:19:15,401 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:19:15,771 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:19:15,782 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:19:15,783 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:19:15,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:19:15 BoogieIcfgContainer [2021-11-19 13:19:15,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:19:15,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:19:15,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:19:15,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:19:15,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:19:13" (1/3) ... [2021-11-19 13:19:15,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f1c5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:19:15, skipping insertion in model container [2021-11-19 13:19:15,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:14" (2/3) ... [2021-11-19 13:19:15,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f1c5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:19:15, skipping insertion in model container [2021-11-19 13:19:15,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:19:15" (3/3) ... [2021-11-19 13:19:15,794 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2021-11-19 13:19:15,801 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 13:19:15,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:19:15,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:19:15,801 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 13:19:15,843 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,843 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,843 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,843 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,844 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,844 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,844 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,844 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,845 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,845 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,845 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,845 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,846 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,846 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,846 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,846 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,846 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,847 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,847 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,847 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,847 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,847 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,848 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet40#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,848 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet40#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,848 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet40#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,848 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet40#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,849 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,849 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,849 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,849 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,850 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,850 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,850 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,850 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,850 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,851 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,851 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,851 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,851 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,851 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,852 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,852 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,852 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,852 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,853 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,853 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,853 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,853 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,853 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,854 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,854 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,854 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,854 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,854 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,855 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,855 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,855 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,855 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,856 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,856 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,856 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,856 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,856 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,856 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,857 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,857 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,857 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,857 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,857 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,858 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,858 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,858 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,858 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,858 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,859 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,859 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,859 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,859 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,860 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,860 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,860 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,860 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,861 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,861 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,861 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,862 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,862 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,862 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,862 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,862 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,863 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,863 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,863 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,863 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,863 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,864 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,864 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,864 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,864 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,865 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,865 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,865 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,865 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,865 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,866 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,866 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,866 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,866 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,866 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,867 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,867 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,867 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,867 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,867 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,868 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,868 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,868 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,871 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,871 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,871 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,871 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,872 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,872 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,872 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,872 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,873 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,873 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,873 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,874 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,875 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,875 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,875 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,875 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,875 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,876 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,876 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,876 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,876 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,877 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,877 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,877 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,877 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,878 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,878 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,878 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,878 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,878 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,879 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,879 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,879 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,879 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,880 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,880 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,880 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,880 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,883 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,883 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,883 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,883 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,883 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,884 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,884 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,884 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,884 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,884 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,884 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,885 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,885 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,885 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,885 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,885 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,885 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,886 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,886 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,886 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,886 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,912 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,912 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,912 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,913 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,913 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,913 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,913 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,913 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,913 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,914 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,914 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,914 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,914 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,914 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,914 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,915 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,915 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,915 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,915 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,915 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,915 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,916 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,916 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,916 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,931 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,932 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,932 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,932 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,933 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,933 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,933 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,933 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,933 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,934 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,934 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,934 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,934 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,934 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,935 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,935 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,935 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,935 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,935 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,935 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,936 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,936 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,936 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,936 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,936 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,936 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,937 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,940 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,940 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,941 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,941 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,941 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,941 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,941 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,941 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,942 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,942 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,942 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,942 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,942 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,943 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,943 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,943 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,943 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,943 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,946 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,946 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,947 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,947 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,947 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,963 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,964 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,964 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,964 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,964 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet40#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,964 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,965 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,965 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,965 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,965 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,965 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,966 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,966 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,966 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,966 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,966 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,967 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,967 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:19:15,992 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-19 13:19:16,075 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:19:16,084 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 13:19:16,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-19 13:19:16,110 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:19:16,129 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 170 transitions, 356 flow [2021-11-19 13:19:16,137 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 170 transitions, 356 flow [2021-11-19 13:19:16,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 167 places, 170 transitions, 356 flow [2021-11-19 13:19:16,271 INFO L129 PetriNetUnfolder]: 10/168 cut-off events. [2021-11-19 13:19:16,271 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-19 13:19:16,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 168 events. 10/168 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 411 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 126. Up to 3 conditions per place. [2021-11-19 13:19:16,296 INFO L116 LiptonReduction]: Number of co-enabled transitions 8324 [2021-11-19 13:19:23,036 INFO L131 LiptonReduction]: Checked pairs total: 11210 [2021-11-19 13:19:23,037 INFO L133 LiptonReduction]: Total number of compositions: 162 [2021-11-19 13:19:23,046 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 37 transitions, 90 flow [2021-11-19 13:19:23,079 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 304 states, 301 states have (on average 2.681063122923588) internal successors, (807), 303 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 304 states, 301 states have (on average 2.681063122923588) internal successors, (807), 303 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:23,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 13:19:23,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:23,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 13:19:23,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:23,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:23,096 INFO L85 PathProgramCache]: Analyzing trace with hash -947993756, now seen corresponding path program 1 times [2021-11-19 13:19:23,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:23,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989006293] [2021-11-19 13:19:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:23,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:23,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:23,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989006293] [2021-11-19 13:19:23,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989006293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:23,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:23,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:19:23,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214011061] [2021-11-19 13:19:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:23,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:19:23,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:23,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:19:23,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:23,421 INFO L87 Difference]: Start difference. First operand has 304 states, 301 states have (on average 2.681063122923588) internal successors, (807), 303 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:23,591 INFO L93 Difference]: Finished difference Result 456 states and 1169 transitions. [2021-11-19 13:19:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:19:23,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 13:19:23,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:23,624 INFO L225 Difference]: With dead ends: 456 [2021-11-19 13:19:23,624 INFO L226 Difference]: Without dead ends: 434 [2021-11-19 13:19:23,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:23,630 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:23,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-19 13:19:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 410. [2021-11-19 13:19:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 406 states have (on average 2.6773399014778323) internal successors, (1087), 409 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:23,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1087 transitions. [2021-11-19 13:19:23,746 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1087 transitions. Word has length 6 [2021-11-19 13:19:23,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:23,746 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1087 transitions. [2021-11-19 13:19:23,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1087 transitions. [2021-11-19 13:19:23,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 13:19:23,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:23,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:23,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:19:23,754 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:23,758 INFO L85 PathProgramCache]: Analyzing trace with hash -122722266, now seen corresponding path program 1 times [2021-11-19 13:19:23,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:23,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869852348] [2021-11-19 13:19:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:23,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:23,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:23,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869852348] [2021-11-19 13:19:23,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869852348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:23,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:23,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:19:23,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845026553] [2021-11-19 13:19:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:23,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:19:23,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:19:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:23,929 INFO L87 Difference]: Start difference. First operand 410 states and 1087 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:24,035 INFO L93 Difference]: Finished difference Result 452 states and 1195 transitions. [2021-11-19 13:19:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:19:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-19 13:19:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:24,041 INFO L225 Difference]: With dead ends: 452 [2021-11-19 13:19:24,041 INFO L226 Difference]: Without dead ends: 452 [2021-11-19 13:19:24,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:24,044 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:24,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 4 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:24,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-19 13:19:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-11-19 13:19:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 448 states have (on average 2.6674107142857144) internal successors, (1195), 451 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1195 transitions. [2021-11-19 13:19:24,082 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1195 transitions. Word has length 10 [2021-11-19 13:19:24,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:24,082 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1195 transitions. [2021-11-19 13:19:24,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:24,083 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1195 transitions. [2021-11-19 13:19:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 13:19:24,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:24,088 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:24,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:19:24,092 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:24,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:24,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1000775458, now seen corresponding path program 1 times [2021-11-19 13:19:24,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:24,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850314681] [2021-11-19 13:19:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:24,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:24,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:24,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850314681] [2021-11-19 13:19:24,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850314681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:19:24,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020791658] [2021-11-19 13:19:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:24,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:24,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:24,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:19:24,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:19:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:24,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:19:24,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:24,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:24,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020791658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:19:24,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [924401816] [2021-11-19 13:19:24,677 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java: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.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) 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 13:19:24,682 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:19:24,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2021-11-19 13:19:24,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361363471] [2021-11-19 13:19:24,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:19:24,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:19:24,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:24,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:19:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:19:24,685 INFO L87 Difference]: Start difference. First operand 452 states and 1195 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:25,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:25,152 INFO L93 Difference]: Finished difference Result 1108 states and 2838 transitions. [2021-11-19 13:19:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:19:25,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 13:19:25,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:25,163 INFO L225 Difference]: With dead ends: 1108 [2021-11-19 13:19:25,179 INFO L226 Difference]: Without dead ends: 1080 [2021-11-19 13:19:25,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:19:25,182 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 171 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:25,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 0 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:19:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-19 13:19:25,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 734. [2021-11-19 13:19:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 730 states have (on average 2.691780821917808) internal successors, (1965), 733 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1965 transitions. [2021-11-19 13:19:25,222 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1965 transitions. Word has length 13 [2021-11-19 13:19:25,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:25,223 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1965 transitions. [2021-11-19 13:19:25,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1965 transitions. [2021-11-19 13:19:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 13:19:25,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:25,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:25,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-19 13:19:25,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:25,452 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:25,453 INFO L85 PathProgramCache]: Analyzing trace with hash -294380294, now seen corresponding path program 1 times [2021-11-19 13:19:25,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:25,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608876676] [2021-11-19 13:19:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:25,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:25,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:25,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608876676] [2021-11-19 13:19:25,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608876676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:25,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:25,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:19:25,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496663080] [2021-11-19 13:19:25,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:25,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:19:25,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:19:25,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:25,534 INFO L87 Difference]: Start difference. First operand 734 states and 1965 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:25,616 INFO L93 Difference]: Finished difference Result 310 states and 698 transitions. [2021-11-19 13:19:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:19:25,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-19 13:19:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:25,619 INFO L225 Difference]: With dead ends: 310 [2021-11-19 13:19:25,620 INFO L226 Difference]: Without dead ends: 306 [2021-11-19 13:19:25,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:25,626 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:25,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 2 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-19 13:19:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 282. [2021-11-19 13:19:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 2.2642857142857142) internal successors, (634), 281 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 634 transitions. [2021-11-19 13:19:25,648 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 634 transitions. Word has length 16 [2021-11-19 13:19:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:25,649 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 634 transitions. [2021-11-19 13:19:25,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 634 transitions. [2021-11-19 13:19:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 13:19:25,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:25,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:25,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:19:25,652 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:25,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1449650952, now seen corresponding path program 1 times [2021-11-19 13:19:25,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:25,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509599722] [2021-11-19 13:19:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:25,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:25,699 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:25,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509599722] [2021-11-19 13:19:25,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509599722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:25,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:25,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:19:25,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218130815] [2021-11-19 13:19:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:25,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:19:25,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:25,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:19:25,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:25,701 INFO L87 Difference]: Start difference. First operand 282 states and 634 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:25,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:25,796 INFO L93 Difference]: Finished difference Result 342 states and 763 transitions. [2021-11-19 13:19:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:19:25,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 13:19:25,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:25,800 INFO L225 Difference]: With dead ends: 342 [2021-11-19 13:19:25,800 INFO L226 Difference]: Without dead ends: 340 [2021-11-19 13:19:25,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:25,801 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:25,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 1 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-19 13:19:25,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 282. [2021-11-19 13:19:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 2.2714285714285714) internal successors, (636), 281 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 636 transitions. [2021-11-19 13:19:25,815 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 636 transitions. Word has length 17 [2021-11-19 13:19:25,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:25,815 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 636 transitions. [2021-11-19 13:19:25,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 636 transitions. [2021-11-19 13:19:25,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 13:19:25,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:25,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:25,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:19:25,818 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:25,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash 50627632, now seen corresponding path program 1 times [2021-11-19 13:19:25,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:25,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710022940] [2021-11-19 13:19:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:25,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:26,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:26,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710022940] [2021-11-19 13:19:26,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710022940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:26,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:26,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:19:26,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365353103] [2021-11-19 13:19:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:26,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:19:26,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:19:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:19:26,353 INFO L87 Difference]: Start difference. First operand 282 states and 636 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:27,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:27,104 INFO L93 Difference]: Finished difference Result 479 states and 1056 transitions. [2021-11-19 13:19:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:19:27,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-19 13:19:27,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:27,109 INFO L225 Difference]: With dead ends: 479 [2021-11-19 13:19:27,110 INFO L226 Difference]: Without dead ends: 434 [2021-11-19 13:19:27,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:19:27,113 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 120 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:27,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 20 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:19:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-19 13:19:27,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 336. [2021-11-19 13:19:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 334 states have (on average 2.2964071856287425) internal successors, (767), 335 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 767 transitions. [2021-11-19 13:19:27,129 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 767 transitions. Word has length 21 [2021-11-19 13:19:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:27,130 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 767 transitions. [2021-11-19 13:19:27,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 767 transitions. [2021-11-19 13:19:27,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 13:19:27,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:27,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:27,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:19:27,132 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1996967548, now seen corresponding path program 2 times [2021-11-19 13:19:27,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:27,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283018106] [2021-11-19 13:19:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:27,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:27,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:27,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283018106] [2021-11-19 13:19:27,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283018106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:27,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:27,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:19:27,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396070298] [2021-11-19 13:19:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:27,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:19:27,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:19:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:19:27,658 INFO L87 Difference]: Start difference. First operand 336 states and 767 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:28,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:28,298 INFO L93 Difference]: Finished difference Result 502 states and 1110 transitions. [2021-11-19 13:19:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:19:28,303 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-19 13:19:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:28,307 INFO L225 Difference]: With dead ends: 502 [2021-11-19 13:19:28,307 INFO L226 Difference]: Without dead ends: 456 [2021-11-19 13:19:28,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:19:28,308 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 100 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:28,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 19 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:19:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-19 13:19:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 324. [2021-11-19 13:19:28,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 322 states have (on average 2.282608695652174) internal successors, (735), 323 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:28,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 735 transitions. [2021-11-19 13:19:28,324 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 735 transitions. Word has length 21 [2021-11-19 13:19:28,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:28,325 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 735 transitions. [2021-11-19 13:19:28,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:28,325 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 735 transitions. [2021-11-19 13:19:28,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:19:28,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:28,327 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:28,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 13:19:28,327 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:28,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:28,328 INFO L85 PathProgramCache]: Analyzing trace with hash 715495023, now seen corresponding path program 1 times [2021-11-19 13:19:28,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:28,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692637176] [2021-11-19 13:19:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:28,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:28,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:28,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692637176] [2021-11-19 13:19:28,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692637176] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:19:28,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421262340] [2021-11-19 13:19:28,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:28,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:28,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:28,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:19:28,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 13:19:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:28,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:19:28,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:19:28,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:19:28,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421262340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:28,724 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:19:28,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2021-11-19 13:19:28,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852428383] [2021-11-19 13:19:28,725 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:28,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:19:28,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:28,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:19:28,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:19:28,726 INFO L87 Difference]: Start difference. First operand 324 states and 735 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:29,084 INFO L93 Difference]: Finished difference Result 478 states and 1038 transitions. [2021-11-19 13:19:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:19:29,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-19 13:19:29,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:29,088 INFO L225 Difference]: With dead ends: 478 [2021-11-19 13:19:29,088 INFO L226 Difference]: Without dead ends: 466 [2021-11-19 13:19:29,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:19:29,090 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:29,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:19:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-19 13:19:29,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 378. [2021-11-19 13:19:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 376 states have (on average 2.25) internal successors, (846), 377 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 846 transitions. [2021-11-19 13:19:29,110 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 846 transitions. Word has length 24 [2021-11-19 13:19:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:29,111 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 846 transitions. [2021-11-19 13:19:29,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:29,111 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 846 transitions. [2021-11-19 13:19:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:19:29,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:29,113 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-11-19 13:19:29,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:29,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:29,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:29,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:29,333 INFO L85 PathProgramCache]: Analyzing trace with hash -232258018, now seen corresponding path program 2 times [2021-11-19 13:19:29,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:29,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204818211] [2021-11-19 13:19:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:29,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:29,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:29,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204818211] [2021-11-19 13:19:29,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204818211] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:19:29,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971151159] [2021-11-19 13:19:29,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:19:29,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:29,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:29,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:19:29,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 13:19:29,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-19 13:19:29,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:19:29,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:19:29,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:29,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:29,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971151159] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:19:29,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [306807322] [2021-11-19 13:19:29,871 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java: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.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) 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 13:19:29,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:19:29,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2021-11-19 13:19:29,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65632428] [2021-11-19 13:19:29,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:19:29,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:19:29,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:19:29,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:19:29,875 INFO L87 Difference]: Start difference. First operand 378 states and 846 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:30,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:30,318 INFO L93 Difference]: Finished difference Result 880 states and 1887 transitions. [2021-11-19 13:19:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:19:30,319 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 13:19:30,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:30,326 INFO L225 Difference]: With dead ends: 880 [2021-11-19 13:19:30,326 INFO L226 Difference]: Without dead ends: 880 [2021-11-19 13:19:30,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:19:30,328 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 252 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:30,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 0 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:19:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-11-19 13:19:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 602. [2021-11-19 13:19:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 600 states have (on average 2.27) internal successors, (1362), 601 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1362 transitions. [2021-11-19 13:19:30,354 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1362 transitions. Word has length 27 [2021-11-19 13:19:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:30,354 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1362 transitions. [2021-11-19 13:19:30,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1362 transitions. [2021-11-19 13:19:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 13:19:30,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:30,356 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:30,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:30,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-19 13:19:30,576 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:30,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:30,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1554545898, now seen corresponding path program 3 times [2021-11-19 13:19:30,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:30,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382909812] [2021-11-19 13:19:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:30,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:19:30,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:30,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382909812] [2021-11-19 13:19:30,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382909812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:30,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:30,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:19:30,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600103714] [2021-11-19 13:19:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:30,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:19:30,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:30,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:19:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:19:30,901 INFO L87 Difference]: Start difference. First operand 602 states and 1362 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:32,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:32,284 INFO L93 Difference]: Finished difference Result 1215 states and 2713 transitions. [2021-11-19 13:19:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 13:19:32,285 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-19 13:19:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:32,296 INFO L225 Difference]: With dead ends: 1215 [2021-11-19 13:19:32,296 INFO L226 Difference]: Without dead ends: 1183 [2021-11-19 13:19:32,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2021-11-19 13:19:32,299 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 124 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:32,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 0 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:19:32,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-11-19 13:19:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 722. [2021-11-19 13:19:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 720 states have (on average 2.370833333333333) internal successors, (1707), 721 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1707 transitions. [2021-11-19 13:19:32,357 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1707 transitions. Word has length 28 [2021-11-19 13:19:32,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:32,358 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 1707 transitions. [2021-11-19 13:19:32,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1707 transitions. [2021-11-19 13:19:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 13:19:32,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:32,364 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:32,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 13:19:32,365 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:32,365 INFO L85 PathProgramCache]: Analyzing trace with hash -244043574, now seen corresponding path program 4 times [2021-11-19 13:19:32,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:32,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307012401] [2021-11-19 13:19:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:32,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:19:32,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:32,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307012401] [2021-11-19 13:19:32,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307012401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:32,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:32,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 13:19:32,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266573705] [2021-11-19 13:19:32,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:32,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:19:32,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:32,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:19:32,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:19:32,879 INFO L87 Difference]: Start difference. First operand 722 states and 1707 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:34,393 INFO L93 Difference]: Finished difference Result 914 states and 2095 transitions. [2021-11-19 13:19:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 13:19:34,394 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-19 13:19:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:34,402 INFO L225 Difference]: With dead ends: 914 [2021-11-19 13:19:34,402 INFO L226 Difference]: Without dead ends: 914 [2021-11-19 13:19:34,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 13:19:34,404 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 160 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:34,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 0 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:19:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-19 13:19:34,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 584. [2021-11-19 13:19:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 582 states have (on average 2.259450171821306) internal successors, (1315), 583 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1315 transitions. [2021-11-19 13:19:34,432 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1315 transitions. Word has length 28 [2021-11-19 13:19:34,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:34,432 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 1315 transitions. [2021-11-19 13:19:34,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1315 transitions. [2021-11-19 13:19:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:19:34,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:34,435 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:34,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 13:19:34,436 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:19:34,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:34,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1128988441, now seen corresponding path program 1 times [2021-11-19 13:19:34,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:34,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771339110] [2021-11-19 13:19:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:34,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:37,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:37,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771339110] [2021-11-19 13:19:37,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771339110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:19:37,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578275211] [2021-11-19 13:19:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:37,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:37,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:37,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:19:37,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 13:19:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:37,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-19 13:19:37,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:37,766 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 0 case distinctions, treesize of input 70 treesize of output 66 [2021-11-19 13:19:38,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:19:38,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 38 [2021-11-19 13:19:39,889 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-19 13:19:39,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 56 [2021-11-19 13:20:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:26,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:16,004 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:21:16,025 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:21:16,026 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2021-11-19 13:21:16,039 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:21:16,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2021-11-19 13:21:16,094 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 10 treesize of output 4 [2021-11-19 13:21:16,120 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:21:16,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 68 [2021-11-19 13:21:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:16,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578275211] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:21:16,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1467236613] [2021-11-19 13:21:16,889 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java: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.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) 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 13:21:16,890 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:21:16,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 19] total 61 [2021-11-19 13:21:16,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646489345] [2021-11-19 13:21:16,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:21:16,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-19 13:21:16,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:21:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-19 13:21:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=3427, Unknown=44, NotChecked=0, Total=3906 [2021-11-19 13:21:16,894 INFO L87 Difference]: Start difference. First operand 584 states and 1315 transitions. Second operand has 63 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:44,613 WARN L227 SmtUtils]: Spent 15.79s on a formula simplification. DAG size of input: 89 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:23:44,511 WARN L227 SmtUtils]: Spent 23.88s on a formula simplification. DAG size of input: 97 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:24:05,004 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:24:23,727 WARN L227 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 147 DAG size of output: 105 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:24:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:26,626 INFO L93 Difference]: Finished difference Result 1252 states and 2679 transitions. [2021-11-19 13:24:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-19 13:24:26,628 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-19 13:24:26,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:26,638 INFO L225 Difference]: With dead ends: 1252 [2021-11-19 13:24:26,638 INFO L226 Difference]: Without dead ends: 1233 [2021-11-19 13:24:26,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 41 SyntacticMatches, 11 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 280.8s TimeCoverageRelationStatistics Valid=1977, Invalid=13209, Unknown=66, NotChecked=0, Total=15252 [2021-11-19 13:24:26,646 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 831 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1565 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:26,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 0 Invalid, 4975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3305 Invalid, 0 Unknown, 1565 Unchecked, 7.3s Time] [2021-11-19 13:24:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2021-11-19 13:24:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 859. [2021-11-19 13:24:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 857 states have (on average 2.281213535589265) internal successors, (1955), 858 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:24:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1955 transitions. [2021-11-19 13:24:26,685 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1955 transitions. Word has length 36 [2021-11-19 13:24:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:26,686 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1955 transitions. [2021-11-19 13:24:26,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:24:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1955 transitions. [2021-11-19 13:24:26,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:24:26,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:26,689 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:24:26,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:26,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-19 13:24:26,904 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:24:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1051983685, now seen corresponding path program 2 times [2021-11-19 13:24:26,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:24:26,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001784125] [2021-11-19 13:24:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:26,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:24:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:28,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:24:28,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:24:28,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001784125] [2021-11-19 13:24:28,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001784125] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:24:28,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633843682] [2021-11-19 13:24:28,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:24:28,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:24:28,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:24:28,202 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:24:28,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 13:24:28,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 13:24:28,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:24:28,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-19 13:24:28,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:28,354 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:24:28,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2021-11-19 13:24:28,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 70 treesize of output 66 [2021-11-19 13:24:29,248 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 13:24:29,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 38 [2021-11-19 13:24:29,766 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 13:24:29,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-11-19 13:24:30,786 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 77 treesize of output 45 [2021-11-19 13:25:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:25:24,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:32,648 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 278 treesize of output 262 [2021-11-19 13:26:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:26:35,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633843682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:26:35,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1700134074] [2021-11-19 13:26:35,687 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java: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.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) 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 13:26:35,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:26:35,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 54 [2021-11-19 13:26:35,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390701333] [2021-11-19 13:26:35,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:26:35,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-19 13:26:35,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:26:35,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-19 13:26:35,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2828, Unknown=49, NotChecked=0, Total=3080 [2021-11-19 13:26:35,692 INFO L87 Difference]: Start difference. First operand 859 states and 1955 transitions. Second operand has 56 states, 55 states have (on average 1.9636363636363636) internal successors, (108), 55 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:26,296 WARN L227 SmtUtils]: Spent 11.23s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:28:32,370 WARN L227 SmtUtils]: Spent 34.63s on a formula simplification. DAG size of input: 52 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:28:34,071 WARN L838 $PredicateComparison]: unable to prove that (and (not (= 4294967294 (mod |c_t1Thread1of1ForFork1_push_~x#1| 4294967296))) (= |c_t1Thread1of1ForFork1_push_~stack#1.base| |c_~#arr~0.base|) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre48#1_45| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_45|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296)))) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork1_push_~stack#1.offset|) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (forall ((|t1Thread1of1ForFork1_push_~x#1| Int) (|v_t1Thread1of1ForFork1_push_#t~ret35#1_106| Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork1_push_~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_push_~stack#1.base|) (+ |c_t1Thread1of1ForFork1_push_~stack#1.offset| (* |v_t1Thread1of1ForFork1_push_#t~ret35#1_106| 4)) |t1Thread1of1ForFork1_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret35#1_106| c_~top~0)))) is different from false [2021-11-19 13:29:11,152 WARN L838 $PredicateComparison]: unable to prove that (and (not (= 4294967294 (mod |c_t1Thread1of1ForFork1_push_~x#1| 4294967296))) (= (+ |c_~#arr~0.offset| (* 4 c_~top~0)) (+ |c_t1Thread1of1ForFork1_push_~stack#1.offset| (* 4 |c_t1Thread1of1ForFork1_push_#t~ret35#1|))) (= |c_t1Thread1of1ForFork1_push_~stack#1.base| |c_~#arr~0.base|) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre48#1_45| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_45|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296)))) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork1_push_~stack#1.offset|) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (forall ((|t1Thread1of1ForFork1_push_~x#1| Int)) (not (= (mod (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork1_push_~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_push_~stack#1.base|) (+ |c_t1Thread1of1ForFork1_push_~stack#1.offset| (* |c_t1Thread1of1ForFork1_push_#t~ret35#1| 4)) |t1Thread1of1ForFork1_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296) 4294967294))) (forall ((|t1Thread1of1ForFork1_push_~x#1| Int) (|v_t1Thread1of1ForFork1_push_#t~ret35#1_106| Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork1_push_~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_push_~stack#1.base|) (+ |c_t1Thread1of1ForFork1_push_~stack#1.offset| (* |v_t1Thread1of1ForFork1_push_#t~ret35#1_106| 4)) |t1Thread1of1ForFork1_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret35#1_106| c_~top~0)))) is different from false [2021-11-19 13:29:25,826 WARN L838 $PredicateComparison]: unable to prove that (and (not (= 4294967294 (mod |c_t1Thread1of1ForFork1_push_~x#1| 4294967296))) (= |c_t1Thread1of1ForFork1_push_~stack#1.base| |c_~#arr~0.base|) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre48#1_45| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_45|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296)))) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork1_push_~stack#1.offset|) (not (= 4294967294 (mod (select (select |c_#memory_int| |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 8))) 4294967296))) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (forall ((|t1Thread1of1ForFork1_push_~x#1| Int) (|v_t1Thread1of1ForFork1_push_#t~ret35#1_106| Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork1_push_~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_push_~stack#1.base|) (+ |c_t1Thread1of1ForFork1_push_~stack#1.offset| (* |v_t1Thread1of1ForFork1_push_#t~ret35#1_106| 4)) |t1Thread1of1ForFork1_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret35#1_106| c_~top~0)))) is different from false [2021-11-19 13:30:33,891 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_t2Thread1of1ForFork0_pop_~stack#1.base|))) (and (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre48#1_45| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_45|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296)))) (not (= 4294967294 (mod (select .cse0 (+ (* c_~top~0 4) |c_t2Thread1of1ForFork0_pop_~stack#1.offset|)) 4294967296))) (not (= 4294967294 (mod (select .cse0 (+ |c_t2Thread1of1ForFork0_pop_~stack#1.offset| (* |c_t2Thread1of1ForFork0_pop_#t~ret37#1| 4))) 4294967296))))) is different from false [2021-11-19 13:32:08,988 WARN L227 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:32:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:08,990 INFO L93 Difference]: Finished difference Result 2282 states and 5314 transitions. [2021-11-19 13:32:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-19 13:32:08,990 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.9636363636363636) internal successors, (108), 55 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-19 13:32:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:09,011 INFO L225 Difference]: With dead ends: 2282 [2021-11-19 13:32:09,011 INFO L226 Difference]: Without dead ends: 2276 [2021-11-19 13:32:09,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 40 SyntacticMatches, 7 SemanticMatches, 133 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 5174 ImplicationChecksByTransitivity, 455.6s TimeCoverageRelationStatistics Valid=1143, Invalid=15736, Unknown=167, NotChecked=1044, Total=18090 [2021-11-19 13:32:09,020 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 463 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 5354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2453 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:09,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1 Invalid, 5354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2770 Invalid, 0 Unknown, 2453 Unchecked, 3.7s Time] [2021-11-19 13:32:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2021-11-19 13:32:09,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 1508. [2021-11-19 13:32:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1506 states have (on average 2.50996015936255) internal successors, (3780), 1507 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 3780 transitions. [2021-11-19 13:32:09,094 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 3780 transitions. Word has length 36 [2021-11-19 13:32:09,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:09,094 INFO L470 AbstractCegarLoop]: Abstraction has 1508 states and 3780 transitions. [2021-11-19 13:32:09,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.9636363636363636) internal successors, (108), 55 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:09,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 3780 transitions. [2021-11-19 13:32:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:32:09,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:09,099 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:09,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:32:09,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-19 13:32:09,324 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:32:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash 546950585, now seen corresponding path program 3 times [2021-11-19 13:32:09,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:09,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766817588] [2021-11-19 13:32:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:09,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:10,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:10,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766817588] [2021-11-19 13:32:10,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766817588] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:32:10,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855425585] [2021-11-19 13:32:10,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:32:10,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:32:10,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:32:10,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:32:10,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac09e97d-df67-4524-b518-20203bfbf20f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 13:32:10,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:32:10,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:32:10,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-19 13:32:10,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:10,862 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:32:10,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-19 13:32:11,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 70 treesize of output 66 [2021-11-19 13:32:11,793 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 13:32:11,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 38 [2021-11-19 13:32:12,226 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 13:32:12,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-11-19 13:32:13,403 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 77 treesize of output 45 [2021-11-19 13:33:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:00,740 INFO L328 TraceCheckSpWp]: Computing backward predicates...